Develop Reference

Disabling a button on empty <select> list?

`I've created a form that allows a user to enter their details and have their first and last names displayed along with a numerical ID. There is a 'Delete' button allowing the user to remove whatever name they select.
by default, the 'Delete' button should be disabled until the <select> list is populated. If all names are deleted from the list - the 'Delete' button should disable again.
That's where im struggling. I cant get the 'Delete' button to enable when a name is added to the list.
Below is my HTML and JavaScript:
MemberList
<h1>Member List</h1>
<form method="post" id="_frmFull">
<label for="lstMembers">Member:</label>
<select size="10"
name="lstMembers"
id="lstMembers">
</select>
<button type="button"
id="addMember"
name="Add Member">
Add Member
</button>
<button type="button"
name="Delete Member"
id="delete">
Delete Member</button>
<div id="Modal" class="modal">
<div class="modal-form">
<label for="memTitle">Title:</label>
<input list="memTitles" name="memTitles" id="memTitle">
<datalist id="memTitles">
<option value="Dr">
<option value="Mr">
<option value="Mrs">
<option value="Ms">
</datalist>
<label for="firstName">First Name:</label>
<input type="text" name="firstName" id="firstName" required="required">
<label for="middleName">Middle Name (optional):</label>
<input type="text" name="middleName" id="middleName">
<label for="lastName">Last Name:</label>
<input type="text" name="lastName" id="lastName" required="required">
<br><br>
<label for="Country">Country:</label>
<input list="countries" name="Country" id="Country">
<datalist id="countries">
<option value="Australia">
<option value="United Kingdom">
<option value="America">
<option value="New Zealand">
</datalist>
<label for="Gender">Gender:</label>
<select name="Gender" id="Gender">
<option>Male</option>
<option>Female</option>
<option>Other</option>
</select>
<label for="birthDate">Birthdate:</label>
<input type="date"
id="birthDate"
min="1900-01-01"
max="2022-12-31" required="required">
<br><br>
<div id="resiAddress">
<p>Residential Address:</p>
<br>
<label for="txtResidentialAddress">Address:</label>
<input type="text" required="required" id="txtResidentialAddress" oninput="copyAddressFields();">
<br><br>
<label for="txtResiPostCode">Postcode:</label>
<input type="text" required="required" id="txtResiPostCode">
<br><br>
<label for="txtResiSuburb">Suburb:</label>
<input type="text" required="required" id="txtResiSuburb">
<br><br>
<label for="txtResiCountry" class="country">Country</label>
<input type="text" required="required" id="txtResiCountry">
<br><br>
<label for="txtResiState">State:</label>
<input type="text" required="required" id="txtResiState">
</div>
<br><br>
<label for="chkSynchronizeAddresses">Same as residential </label>
<input type="checkbox" required="required" id="chkSynchronizeAddresses" >
<div id="postAddress">
<p>Postal Address:</p>
<br>
<label for="txtPostalAddress">Address:</label>
<input type="text" id="txtPostalAddress">
<br><br>
<label for="txtPostCode">Postcode:</label>
<input type="text" id="txtPostCode">
<br><br>
<label for="txtPostalSuburb">Suburb:</label>
<input type="text" id="txtPostalSuburb">
<br><br>
<label for="txtPostalCountry">Country:</label>
<input type="text" id="txtPostalCountry">
<br><br>
<label for="txtPostalState">State:</label>
<input type="text" id="txtPostalState">
</div>
<br><br>
<label for="txtPhone" class="phone">Phone: (optional)</label>
<input id="txtPhone" type="text">
<br><br>
<label for="txtMobile" class="mobile">Mobile: (optional)</label>
<input id="txtMobile" type="text">
<br><br>
<button type="button" name="save" id="save">Save</button>
<br><br>
<button type="button"
name="cancel"
id="closeModal">
Cancel</button>
</div>
</div>
</form>
<script>
console.log("Log test - please work!!")
const addBtn = document.getElementById("addMember");
const modal = document.getElementById("Modal");
const cancelBtn = document.getElementById("closeModal");
let chkSynchronizeAddresses = document.getElementById("chkSynchronizeAddresses");
const _frmFull = document.getElementById("_frmFull");
let Member = document.getElementById("lstMembers");
let Delete = document.getElementById("delete");
let save = document.getElementById("save");
let fName = document.getElementById("firstName");
let lName = document.getElementById("lastName");
let birthDate = document.getElementById("birthDate");
Delete.disabled = Member.value === 1;
addBtn.onclick = function (){
openPopUp();
console.log('function - correct');
}
cancelBtn.onclick = function (){
let closeTrue = confirm("Close form? You've not saved anything.")
if (closeTrue === true) {
closePopUp();
}
}
chkSynchronizeAddresses.onclick = function (){
console.log("Is this working??");
if (chkSynchronizeAddresses.checked){
document.getElementById("txtPostalAddress").setAttribute("readonly", "true");
document.getElementById("txtPostCode").setAttribute("readonly", "true");
document.getElementById("txtPostalState").setAttribute("readonly", "true");
document.getElementById("txtPostalSuburb").setAttribute("readonly", "true");
document.getElementById("txtPostalCountry").setAttribute("readonly", "true");
copyAddressFields();
}
else {
document.getElementById("txtPostalAddress").removeAttribute("readonly");
document.getElementById("txtPostCode").removeAttribute("readonly")
document.getElementById("txtPostalState").removeAttribute("readonly");
document.getElementById("txtPostalSuburb").removeAttribute("readonly");
document.getElementById("txtPostalCountry").removeAttribute("readonly");
}
}
function copyAddressFields () {
if (chkSynchronizeAddresses.checked){
document.getElementById("txtPostalAddress").value = document.getElementById("txtResidentialAddress").value;
document.getElementById("txtPostCode").value = document.getElementById("txtResiPostCode").value;
document.getElementById("txtPostalSuburb").value = document.getElementById("txtResiSuburb").value;
document.getElementById("txtPostalState").value = document.getElementById("txtResiState").value;
document.getElementById("txtPostalCountry").value = document.getElementById("txtResiCountry").value;
}
}
let idCount = 0
save.onclick = function (){
let fNameValue = fName.value
let lNameValue = lName.value
let bDateValue = birthDate.value
let pCountryValue = document.getElementById("txtPostalCountry").value
let pSuburbValue = document.getElementById("txtPostalSuburb").value
let pStateValue = document.getElementById("txtPostalState").value
let pCodeValue = document.getElementById("txtPostCode").value
let pAddressValue = document.getElementById("txtPostalAddress").value
if (fNameValue === ""){
alert("Please enter your first name to proceed");
return false;
}
else
if (lNameValue === "") {
alert("Please enter your last name to proceed");
return false;
} else if (bDateValue === "") {
alert("Please select a DOB to proceed");
return false;
} else if (pCountryValue === "") {
alert("Please enter your country to continue");
return false;
} else if (pSuburbValue === "") {
alert("Please enter your suburb to continue");
return false;
} else if (pCodeValue === "") {
alert("Please enter your postcode to continue");
return false;
} else if (pAddressValue === "") {
alert("Please enter your Address to continue");
return false;
} else if (pStateValue === "") {
alert("Please enter your state to continue");
return false;
} else {
Member.innerHTML +=
`<option value= >${idCount} ${_frmFull.firstName.value} ${_frmFull.lastName.value}<option>`
idCount++
console.log("check - is increase even working????")
}
closePopUp();
return true;
}
function closePopUp() {
modal.style.display="none";
}
function openPopUp() {
modal.style.display = "block";
}
Delete.onclick = function removeOption () {
Member.remove(Member.options);
console.log("is remove being triggered??")
}
if (Member.options.length == ""){
Delete.disabled = true
}
else {
Delete.disabled = false
}
</script>
</body>
`

The reason why the Delete button is not enabling is because the code that is supposed to enable the Delete button is only run once, when the page loads.
Assuming that this is the code that is supposed to enable the button:
if (Member.options.length == 0){ // changed from Member.options.length == ""
Delete.disabled = true
} else {
Delete.disabled = false
}
This code is only run once, when the page loads and the JavaScript code is run. In order to enable the button properly, we need to run this code every time that Member.options.length changes. One way you can do this is place the code snippet above for disabling/enabling the Delete button inside the onclick listener for the save button and to re-check every time a new user is saved. You would have to add this snippet into every place in your code where Member.options.length could change (inside the listener for the delete button as well).
Full updated code:
MemberList
<h1>Member List</h1>
<form method="post" id="_frmFull">
<label for="lstMembers">Member:</label>
<select size="10"
name="lstMembers"
id="lstMembers">
</select>
<button type="button"
id="addMember"
name="Add Member">
Add Member
</button>
<button type="button"
name="Delete Member"
id="delete">
Delete Member</button>
<div id="Modal" class="modal">
<div class="modal-form">
<label for="memTitle">Title:</label>
<input list="memTitles" name="memTitles" id="memTitle">
<datalist id="memTitles">
<option value="Dr">
<option value="Mr">
<option value="Mrs">
<option value="Ms">
</datalist>
<label for="firstName">First Name:</label>
<input type="text" name="firstName" id="firstName" required="required">
<label for="middleName">Middle Name (optional):</label>
<input type="text" name="middleName" id="middleName">
<label for="lastName">Last Name:</label>
<input type="text" name="lastName" id="lastName" required="required">
<br><br>
<label for="Country">Country:</label>
<input list="countries" name="Country" id="Country">
<datalist id="countries">
<option value="Australia">
<option value="United Kingdom">
<option value="America">
<option value="New Zealand">
</datalist>
<label for="Gender">Gender:</label>
<select name="Gender" id="Gender">
<option>Male</option>
<option>Female</option>
<option>Other</option>
</select>
<label for="birthDate">Birthdate:</label>
<input type="date"
id="birthDate"
min="1900-01-01"
max="2022-12-31" required="required">
<br><br>
<div id="resiAddress">
<p>Residential Address:</p>
<br>
<label for="txtResidentialAddress">Address:</label>
<input type="text" required="required" id="txtResidentialAddress" oninput="copyAddressFields();">
<br><br>
<label for="txtResiPostCode">Postcode:</label>
<input type="text" required="required" id="txtResiPostCode">
<br><br>
<label for="txtResiSuburb">Suburb:</label>
<input type="text" required="required" id="txtResiSuburb">
<br><br>
<label for="txtResiCountry" class="country">Country</label>
<input type="text" required="required" id="txtResiCountry">
<br><br>
<label for="txtResiState">State:</label>
<input type="text" required="required" id="txtResiState">
</div>
<br><br>
<label for="chkSynchronizeAddresses">Same as residential </label>
<input type="checkbox" required="required" id="chkSynchronizeAddresses" >
<div id="postAddress">
<p>Postal Address:</p>
<br>
<label for="txtPostalAddress">Address:</label>
<input type="text" id="txtPostalAddress">
<br><br>
<label for="txtPostCode">Postcode:</label>
<input type="text" id="txtPostCode">
<br><br>
<label for="txtPostalSuburb">Suburb:</label>
<input type="text" id="txtPostalSuburb">
<br><br>
<label for="txtPostalCountry">Country:</label>
<input type="text" id="txtPostalCountry">
<br><br>
<label for="txtPostalState">State:</label>
<input type="text" id="txtPostalState">
</div>
<br><br>
<label for="txtPhone" class="phone">Phone: (optional)</label>
<input id="txtPhone" type="text">
<br><br>
<label for="txtMobile" class="mobile">Mobile: (optional)</label>
<input id="txtMobile" type="text">
<br><br>
<button type="button" name="save" id="save">Save</button>
<br><br>
<button type="button"
name="cancel"
id="closeModal">
Cancel</button>
</div>
</div>
</form>
<script>
console.log("Log test - please work!!")
const addBtn = document.getElementById("addMember");
const modal = document.getElementById("Modal");
const cancelBtn = document.getElementById("closeModal");
let chkSynchronizeAddresses = document.getElementById("chkSynchronizeAddresses");
const _frmFull = document.getElementById("_frmFull");
let Member = document.getElementById("lstMembers");
let Delete = document.getElementById("delete");
let save = document.getElementById("save");
let fName = document.getElementById("firstName");
let lName = document.getElementById("lastName");
let birthDate = document.getElementById("birthDate");
Delete.disabled = Member.options.length == 0
addBtn.onclick = function (){
openPopUp();
console.log('function - correct');
}
cancelBtn.onclick = function (){
let closeTrue = confirm("Close form? You've not saved anything.")
if (closeTrue === true) {
closePopUp();
}
}
chkSynchronizeAddresses.onclick = function (){
console.log("Is this working??");
if (chkSynchronizeAddresses.checked){
document.getElementById("txtPostalAddress").setAttribute("readonly", "true");
document.getElementById("txtPostCode").setAttribute("readonly", "true");
document.getElementById("txtPostalState").setAttribute("readonly", "true");
document.getElementById("txtPostalSuburb").setAttribute("readonly", "true");
document.getElementById("txtPostalCountry").setAttribute("readonly", "true");
copyAddressFields();
}
else {
document.getElementById("txtPostalAddress").removeAttribute("readonly");
document.getElementById("txtPostCode").removeAttribute("readonly")
document.getElementById("txtPostalState").removeAttribute("readonly");
document.getElementById("txtPostalSuburb").removeAttribute("readonly");
document.getElementById("txtPostalCountry").removeAttribute("readonly");
}
}
function copyAddressFields () {
if (chkSynchronizeAddresses.checked){
document.getElementById("txtPostalAddress").value = document.getElementById("txtResidentialAddress").value;
document.getElementById("txtPostCode").value = document.getElementById("txtResiPostCode").value;
document.getElementById("txtPostalSuburb").value = document.getElementById("txtResiSuburb").value;
document.getElementById("txtPostalState").value = document.getElementById("txtResiState").value;
document.getElementById("txtPostalCountry").value = document.getElementById("txtResiCountry").value;
}
}
let idCount = 0
save.onclick = function (){
let fNameValue = fName.value
let lNameValue = lName.value
let bDateValue = birthDate.value
let pCountryValue = document.getElementById("txtPostalCountry").value
let pSuburbValue = document.getElementById("txtPostalSuburb").value
let pStateValue = document.getElementById("txtPostalState").value
let pCodeValue = document.getElementById("txtPostCode").value
let pAddressValue = document.getElementById("txtPostalAddress").value
if (fNameValue === ""){
alert("Please enter your first name to proceed");
return false;
}
else
if (lNameValue === "") {
alert("Please enter your last name to proceed");
return false;
} else if (bDateValue === "") {
alert("Please select a DOB to proceed");
return false;
} else if (pCountryValue === "") {
alert("Please enter your country to continue");
return false;
} else if (pSuburbValue === "") {
alert("Please enter your suburb to continue");
return false;
} else if (pCodeValue === "") {
alert("Please enter your postcode to continue");
return false;
} else if (pAddressValue === "") {
alert("Please enter your Address to continue");
return false;
} else if (pStateValue === "") {
alert("Please enter your state to continue");
return false;
} else {
Member.innerHTML +=
`<option value= >${idCount} ${_frmFull.firstName.value} ${_frmFull.lastName.value}<option>`
idCount++
console.log("check - is increase even working????")
if (Member.options.length == 0){
Delete.disabled = true
}
else {
Delete.disabled = false
}
}
closePopUp();
return true;
}
function closePopUp() {
modal.style.display="none";
}
function openPopUp() {
modal.style.display = "block";
}
Delete.onclick = function removeOption () {
Member.remove(Member.options);
if (Member.options.length == 0) {
Delete.disabled = true
}
else {
Delete.disabled = false
}
console.log("is remove being triggered??")
}
</script>
</body>

so if i understood correctly you want to toggle a button if a is populated
In that case you want to keep track of the options
You can use
document.querySelectoAll('options')
and store it in a variable
then write a function that check if there's a value in that variable and disable or enable the button based on that.
Here's a fiddle:
https://jsfiddle.net/skm7bcr6/15/

Check required inputs with javascript

I have 4 inputs on my page, and on a button onClick, i want to check, that all the inputs are filled with text.
<input type="text" value="" id="input1">
<input type="text" value="" id="input2">
<input type="text" value="" id="input3">
<input type="text" value="" id="input4">
What i want : Store all the required inputs ID in an array, and on click, check, that is there any input, that is empty.
How can i do this at the simplest way?

Use required tag instead as given below
<input type="text" value="" id="input1" required>

you can also try adding REGEX for more strict checking
// using Plain JavaScript
var input1= document.getElementById('input1').value;
if(input1 == "" ){
alert("Input 1 is Empty");
return false;
}
var input2 = document.getElementById('input2').value;
if(input12 == "" ){
alert("Input 2 is Empty");
return false;
}
var input3 = document.getElementById('input3').value;
if(input3 == "" ){
alert("Input 3 is Empty");
return false;
}
var input4 = document.getElementById('input4').value;
if(input4 == "" ){
alert("Input 4 is Empty");
return false;
}

just incase the required attribute fails.. you can do this..
add a validate function to the blur event, that is when the user leaves the field..
<input type="text" onblur="validate(this)" value="" id="input1">
<input type="text" onblur="validate(this)" value="" id="input2">
<input type="text" onblur="validate(this)" value="" id="input3">
<input type="text" onblur="validate(this)" value="" id="input4">
<button> ... </button>
and using jquery you can do this..
function validate(obj){
if($(obj).val() == ''){
alert('this Field cannot be empty');
$(obj).focus(); //send focus back to the object...
}
}

<input type="text" value="" id="input1">
<input type="text" value="" id="input2">
<input type="text" value="" id="input3">
<input type="text" value="" id="input4">
jQuery(function($){
var arr = [];
// number of input elements
var count = $("input").length;
// store list of input ids
$("buttonName").on('click', function(event) {
$("input").each(function(i){
var currId = $(this).attr('id');
arr.push(currId);
if ($(this).val()=="") {
alert(currId+": has no input");
}
});
});
});

How to multiple (a*b) two input text value and show it Dynamicly with text change in javascript?

i want to show the money that customer must pay and my inputs are like this :
<input type="text" class="form-control" placeholder="cost " id="txt" name="credit">
<input type="text" class="form-control" placeholder="quantity" id="txt" name="limit">
when the input text is changing i want to show the total cost (quantity*cost) in a <p> tag Dynamicly how can it be with javascript?

You can try this:
<input type="text" class="form-control" placeholder="cost " id="credit" name="credit" onchange="calculate()">
<input type="text" class="form-control" placeholder="quantity" id="limit" name="limit" onchange="calculate()">
<p id="result"></p>
And javascript part:
function calculate() {
var cost = Number(document.getElementById("credit"));
var limit = Number(document.getElementById("limit"));
document.getElementById("result").innerHTML= cost*limit;
}
You must ensure you entered numbers in inputs.

All of the above will generate errors if both the boxes are blank . Try this code , its tested and running .
<script>
function calc()
{
var credit = document.getElementById("credit").value;
var limit = document.getElementById("limit").value;
if(credit == '' && limit != '')
{
document.getElementById("cost").innerHTML = parseInt(limit);
}
else if(limit == '' && credit != '')
{
document.getElementById("cost").innerHTML = parseInt(credit);
}
else if(limit!= '' && credit!= '')
{
document.getElementById("cost").innerHTML = parseInt(limit) * parseInt(credit);
}
else
{
document.getElementById("cost").innerHTML = '';
}
}
</script>
</head>
<input type="number" value="0" min="0" class="form-control" placeholder="cost" id="credit" name="credit" onkeyup="calc();">
<input type="number" value="0" min="0" class="form-control" placeholder="quantity" id="limit" name="limit" onkeyup="calc();">
<p id="cost"></p>

Hope this will be useful
// get cost field
var _cost = document.getElementById("cost");
_cost.addEventListener('keyup',function(event){
updateCost()
})
// get quantity field
var _quantity = document.getElementById("quantity");
_quantity.addEventListener('keyup',function(event){
updateCost()
})
function updateCost(){
var _getCost = document.getElementById("cost").value;
var _getQuantity = document.getElementById("quantity").value;
var _total = _getCost*_getQuantity;
console.log(_total);
document.getElementById("updateValue").textContent = ""; // Erase previous value
document.getElementById("updateValue").textContent = _total // update with new value
}
jsfiddle

In case you consider using JQuery I've made this fiddle.
See if it works for you.
https://fiddle.jshell.net/9cpbdegt/
$(document).ready(function() {
$('#credit').keyup(function() {
recalc();
});
$('#limit').keyup(function() {
recalc();
});
function recalc() {
var credit = $("#credit").val();
var limit = $("#limit").val();
var result = credit * limit;
$("#result").text(result);
}
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<input type="text" class="form-control" placeholder="cost " id="credit" name="credit" value="0">x
<input type="text" class="form-control" placeholder="quantity" id="limit" name="limit" value="0">
<p id="result">0</p>

Try this:
<script >
function myFunction() {
document.getElementById('totalcost').innerHTML = document.getElementById('txt').value * document.getElementById('txt2').value;}
</script>
Also, change your HTML to this:
<input type="text" onkeypress="myFunction()" onkeyup="myFunction()" onclick="myFunction()" onmousemove="myFunction()" class="form-control" placeholder="cost " id="txt" name="credit">
<input type="text" onkeypress="myFunction()" onkeyup="myFunction()" onclick="myFunction()" onmousemove="myFunction()" class="form-control" placeholder="quantity" id="txt2" name="limit">
Enter cost and quantity.
Note the change with the second input: id='txt' was changed to id='txt2'. This is because no 2 elements can have the same id.
Note: Untested.

how to validate single field in form when i have 5 fields using javascript?

I have a form which has four fields, when the all the fields are empty and submit button is clicked- it should alert "Please select at least one value".
When I enter the value in any of the fields the form should get submitted. I tried the following code but it's not working
function validatefleid() {
var computername = document.myform.computername.value;
var monitorname = document.myform.monitorname.value;
var tvname = document.myform.tvname.value;
var laptopname = document.myform.laptopname.value;
var cellphonename = document.myform.cellphonename.value;
if ((computername == null || computername == "") || (monitorname == null || monitorname == "") || (tvname == null || tvname == "") || (laptopname == null || laptopname == "") || (cellphonename == null || cellphonename == "")) {
alert("Please atleast one value");
return false;
}
}
<form name="myform" onsubmit="return validatefleid()">
computer
<input type="text" class="form-control inpt-bx-txtclr-home" name="computername" id="computerid" placeholder="000">monitor
<input type="text" class="form-control inpt-bx-txtclr-home" name="monitorname" id="monitorid" placeholder="000">tv
<input type="text" class="form-control inpt-bx-txtclr-home" name="tvname" id="tvid" placeholder="000">laptop
<input type="text" class="form-control inpt-bx-txtclr-home" name="laptopname" id="laptopid" placeholder="000">cellphone
<input type="text" class="form-control inpt-bx-txtclr-home" name="cellphonename" id="cellphoneid" placeholder="000">
<button type="submit">Calculate</button>
</form>

It is possible by iterating through all of the inputs within the form, and look for at least one input with value that's different than ''. Check the demo:
$(function(){
var $form = $('#myform');
$form.submit(function(){
var valid = false;
$('input', $form).each(function(){
if($(this).val() != ''){
valid = true;
}
});
if (!valid) {
alert("Please atleast one value");
}
return valid;
});
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<form id="myform" name="myform">
computer<input type="text" class="form-control inpt-bx-txtclr-home" name="computername" id="computerid" placeholder="000">
monitor<input type="text" class="form-control inpt-bx-txtclr-home" name="monitorname" id="monitorid" placeholder="000">
tv<input type="text" class="form-control inpt-bx-txtclr-home" name="tvname" id="tvid" placeholder="000">
laptop<input type="text" class="form-control inpt-bx-txtclr-home" name="laptopname" id="laptopid" placeholder="000">
cellphone<input type="text" class="form-control inpt-bx-txtclr-home" name="cellphonename" id="cellphoneid" placeholder="000">
<button type="submit" >Calculate</button>
</form>

Without jQuery :
https://jsfiddle.net/uL28jsf9/
<script type="text/javascript">
function validatefleid()
{
var allFieldsNames = ['computername', 'monitorname', 'tvname', 'laptopname', 'cellphonename'];
var checkIfFieldEmpty function(fieldName) {
var fieldValue = document.myform[fieldName].value;
return fieldValue === "" || fieldValue === null
}
var allFieldsEmpty = allFieldsNames.every(checkIfFieldEmpty);
if (allFieldsEmpty) {
alert("Please atleast one value");
return false;
}
else {
alert("I'm ok with that !")
}
}
</script>

oops i have got the answer
I have a form which as four fields when the all the fields are empty and submit button is clicked it should alert as "please select atleast one value" when i entry the value in any of the one fields the form should get submitted i have tries the following code but its not working
<script type="text/javascript">
function validatefleid()
{
var computername=document.myform.computername.value;
var monitorname=document.myform.monitorname.value;
var tvname=document.myform.tvname.value;
var laptopname=document.myform.laptopname.value;
var cellphonename=document.myform.cellphonename.value;
if((computername==null || computername=="") && (monitorname==null || monitorname=="") && (tvname==null || tvname=="") && (laptopname==null || laptopname=="") && (cellphonename==null || cellphonename==""))
{
alert("Please atleast one value");
return false;
}
}
</script>
<form name="myform" onsubmit="return validatefleid()">
computer<input type="text" class="form-control inpt-bx-txtclr-home" name="computername" id="computerid" placeholder="000">
monitor<input type="text" class="form-control inpt-bx-txtclr-home" name="monitorname" id="monitorid" placeholder="000">
tv<input type="text" class="form-control inpt-bx-txtclr-home" name="tvname" id="tvid" placeholder="000">
laptop<input type="text" class="form-control inpt-bx-txtclr-home" name="laptopname" id="laptopid" placeholder="000">
cellphone<input type="text" class="form-control inpt-bx-txtclr-home" name="cellphonename" id="cellphoneid" placeholder="000">
<button type="submit" >Calculate</button>
</form>

here is a complete cross-browser working version of validatefleid function.
function validatefleid(){
var inputIds = ['computerid','monitorid','tvid','laptopid','cellphoneid'];
var hasEnteredAnyValue = false;
for(var i=0;i<inputIds.length;i++){
hasEnteredAnyValue = document.getElementById(inputIds[i]).value;
if(hasEnteredAnyValue)break;
}
if(!hasEnteredAnyValue)
{
alert("Please atleast one value");
return false;
}
}

trouble validating various inputs with jQuery

for a class project I have to build a website for a pet store, featuring a pet grooming service. This involves a form, php and a mysql server on my localhost. I have been unable to correctly validate this form via a jQuery validator plugin for some unknown (to me) reason.
I've had no luck via regular jQuery code beyond getting the form to not submit blank input values. So as it is, anybody can put 'sadklfhsdk' in any of the fields (except for email, unless it has a '#') and it will validate and submit to the server.
So after I going through a couple of tutorials this is what I have so far:
The HTML:
<body>
<div id="h2Groom"><h2>Grooming Request Form</h2></div>
<form id="groom_form" method="post" action="insertPS.php">
<div id="result"></div>
<label for="firstName"><span>First Name:</span>
<input type="text" name="firstName" id="firstName" placeholder="Enter Your First Name" class="required"/>
</label>
<label for="lastName"><span>Last Name:</span>
<input type="text" name="lastName" id="lastName" placeholder="Enter Your Last Name" class="required"/>
</label>
<label for="email"><span>Email Address:</span>
<span id="error"></span>
<input type="email" name="email" id="email" placeholder="Enter a Email"/>
</label>
<label for="phone"><span>Phone Number:</span>
<span id="error"></span>
<input type="text" name="phone" id="phone" placeholder="Enter a phone number" class="required"/>
</label>
<label for="address"><span>Address:</span>
<input type="text" name="address" id="address" placeholder="Enter your address" class="required"/>
</label>
<label for="city"><span>City:</span>
<input type="text" name="city" id="city" placeholder="Enter your city" />
</label>
<label for="state"><span>State:</span>
<input type="text" name="state" id="state" placeholder="Enter your state" class="required"/>
</label>
<label for="zipcode"><span>Zipcode:</span>
<input type="text" name="zipcode" id="zipcode" placeholder="Enter your zipcode" class="required"/>
</label>
<label for="petType"><span>Type of Pet:</span>
<ul>
<li><label><input name="petType" type="radio" value="dog" id="dog">Dog</label></li>
<li><label><input name="petType" type="radio" value="cat" id="cat">Cat</label></li>
<li><label><input name="petType" type="radio" value="bird" id="bird">Bird</label></li>
</ul>
</label>
<select id="breed" name="breed">
<option value="0">--Please Choose Dog Breed--</option>
<option value="AlaskanMal">Alaskan Malamute</option>
<option value="Bichon">Bichon Frise</option>
<option value="WelshCorgi">Corgi, Welsh</option>
<option value="Dalmation">Dalmation</option>
<option value="EnglishToySpan">English Toy Spaniel</option>
<option value="FrenchBull">French Bull Dog</option>
<option value="Greyhound">Greyhound</option>
<option value="Papillon">Papillon</option>
<option value="Rottweiler">Rottweiler</option>
<option value="YorkshireTerr">Yorkshire Terrier</option>
</select>
<label for="neut"><span>Check box if your pet has been neutered/spayed (leave unchecked if not).</span></label>
<ul>
<label>
<li><input type="checkbox" name="neut" id="neut" />Yes</li></label>
</ul>
<br />
<br />
<br />
<label for="petname"><span>Pet Name:</span>
<input type="text" name="petname" id="petname" placeholder="Enter your pet's name" class="required" />
</label>
<label for="petBday"><span>Pet's Birthday:</span>
<input type="date" id="petBday" name="petBday"/>
</label>
<span> </span>
<input type="submit" id="submitBttn" value="Submit" /><input type="reset" id="resetBttn" value="Reset" />
</form>
</body>
The jQUERY (except the script to send values to server, see jsfiddle link):
$(document).ready(function() {
$('input[name=petType]').click(function() {
if(this.id=='dog') {
$('#breed').show('slow');
}
else {
$('#breed').hide('slow');
}
});
$('input[name=phone]').blur(function() {
if (validatePhone('phone')) {
$('#error').html('Valid');
$('#error').css('color', 'green');
}
else {
$('#error').html('Invalid');
$('#error').css('color', 'red');
}
});
$('input[name=email]').blur(function() {
if (validateEmail('email')) {
$('#error').html('Valid');
$('#error').css('color', 'green');
}
else {
$('#error').html('Invalid');
$('#error').css('color', 'red');
}
});
$("#submitBttn").click(function() {
//get input field values
var user_firstName = $('input[name=firstName]').val();
var user_lastName = $('input[name=lastName]').val();
var user_email = $('input[name=email]').val();
var user_address = $('input[name=address]').val();
var user_phone = $('input[name=phone]').val();
var user_city = $('input[name=city]').val();
var user_state = $('input[name=state]').val();
var user_zipcode = $('input[name=zipcode]').val();
var user_petname = $('input[name=petname]').val();
var checked_radio = $('input:radio[name=petType]').is(':checked');
var user_neut = $('input:checkbox[name=neut]').is(':checked');
var user_breed = $('input:select[name=breed]').is(':selected');
var txtVal = $('#petBday').val();
if(isDate(txtVal))
alert('Valid Date');
else
alert('Invalid Date');
var proceed = true;
//Validation functions, executed when user hits "submit"
function validatePhone(phone) {
var a = document.getElementById(phone).value;
var filter = /^[0-9-+]+$/;
if (filter.text(phone)) {
return true;
}
else {
return false;
}
}
function validateEmail(email) {
var filter = /^([\w-\.]+)#((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.)|(([\w-]+\.)+))([a-zA-Z]{2,4}|[0-9]{1,3})(\]?)$/;
if (filter.test(email)) {
return true;
}
else {
return false;
}
}
function isDate(txtDate)
{
var currVal = txtDate;
if(currVal == '')
return false;
//declare regex
var rxDatePattern = /^(\d{1,2})(\/|-)(\d{1,2})(\/|-)(\d{4})$/;
var dtArray = currVal.match(rxDatePattern); //is the format ok?
if(dtArray ==null)
return false;
//checks for mm/dd/yyyy format
dtMonth = dtArray[1];
dtDay = dtArray[3];
dtYear = dtArray[5];
if(dtMonth < 1 || dtMonth > 12)
return false;
else if (dtDay < 1 || dtDay > 31)
return false;
else if ((dtMonth==4 || dtMonth==6 || dtMonth==9 || dtMonth==11) && dtDay ==31)
return false;
else if (dtMonth == 2)
{
var isleap = (dtYear % 4 == 0 && (dtYear % 100 != 0 || dtYear % 400 == 0));
if(dtDay > 29 || (dtDay ==29 && !isleap))
return false;
}
return true;
}
EDIT: corrected if(filter.text()) to if(filter.test(phone)). None of my java validation code works.

validatePhone: filter.text should be spelled test