I am trying to get this to be if your name is Bob then you are register if not Sorry you are not allowed access but i can not figure out what I am doing wrong can someone help me thanks.
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title></title>
<meta http-equiv="content-type" content="text/html;charset=iso-8859-1" />
</head>
<script type="text/javascript">
function verify() {
var name="Please enter your name: ";
if (firstName=="Bob") {
alert("Now registered");
}
else {
window.alert("Sorry you aren't allowed acess.")
return false;
}
</script>
<form name="myForm" action="#" method="post" enctype="text/plain">
<input type="text" name="BOB">First Name<br>
<input type="button" value="Submit" onclick="verify();">
</form>
</body>
</html>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title></title>
<meta http-equiv="content-type" content="text/html;charset=iso-8859-1" />
</head>
<script type="text/javascript">
function verify() {
var name="Please enter your name: ";
var firstName = document.getElementById('firstName').value;
if (firstName=="Bob") {
alert("Now registered");
return true;
}
else {
window.alert("Sorry you aren't allowed acess.")
return false;
} }
</script>
<form name="myForm" action="#" method="post" onsubmit="return verify();" enctype="text/plain">
<input id="firstName" type="text" name="BOB"/>First Name<br>
<input type="button" value="Submit"/>
</form>
</body>
</html>
you have to use onsubmit on form tag and it must return true or false
Note that you are missing the closing braces for the function, this code works:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title></title>
<meta http-equiv="content-type" content="text/html;charset=iso-8859-1" />
</head>
<script type="text/javascript">
function verify()
{
var name="Please enter your name: ";
if (myForm.firstName.value=="Bob")
{
alert("Now registered");
}
else
{
alert("Sorry you aren't allowed acess.")
return false;
}
}
</script>
<form name="myForm" action="#" method="post" enctype="text/plain">
<input type="text" name=firstName>First Name<br>
<input type="button" value="Submit" onclick="verify();">
</form>
</body>
</html>
This should work.
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title></title>
<meta http-equiv="content-type" content="text/html;charset=iso-8859-1" />
</head>
<body>
<script type="text/javascript">
function verify() {
var firstName = document.getElementById('firstName').value;
if (firstName == "Bob") {
alert("Now registered");
return true;
} else {
window.alert("Sorry you aren't allowed access.");
return false;
}
}
</script>
<form name="myForm" action="#" method="post" onsubmit="return verify();" enctype="text/plain">
<input id="firstName" type="text" name="BOB"/>First Name<br>
<input type="submit" value="Submit"/>
</form>
</body>
</html>
Update your javascript like so:
<script type="text/javascript">
function verify() {
var name="Please enter your name: ";
if (document.myForm.firstName.value=="Bob") {
alert("Now registered");
return true;
}
else {
window.alert("Sorry you aren't allowed acess.")
return false;
}
}
</script>
Then update your HTML form to this:
<form name="myForm" action="#" method="post" enctype="text/plain">
<input type="text" name="firstName" value="">First Name<br>
<input type="button" value="Submit" onclick="verify();">
</form>
your onsubmit should be on the form handler (the open tag of the "form"), not on the button.
Several issues:
You don't have a javascript variable firstName anywhere. The script probably stops there.
Your form markup for the first name field is strange (why are you naming the text box "BOB"? You should give it an ID.
You need to access the form element in javascript properly.
When submitting a form, it is better to use a submit input type and hookup the form onsubmit (in this regard the answer by #Pravat is correct, though not on the other points).
This line does nothing - var name="Please enter your name: ";
Firstly the Javascript does not know what firstname is
To fix this you need to do two things:
Use the HTML <input name="BOB" id="firstName" value="" />. Note the id attribute, we'll use this to let the JS find the element we want to examine.
Then in Javascript we can find what the user has entered in the input using document.getElementById('firstName').value.
This should let you do your comparison.
To fix minor parts of your code, I believe you forgot to open your <body> tag
your also missing a } for your function
self-close your input and br tags
Try to use:
var firstName = document.getElementById('firstName').value;
and put missing } for verify function
see this..., you also have a } missing... just before the < /script> ... the missing } is the one that closes the verify function.
Related
I'm learning to write javascript and here is the code:
<!DOCTYPE html Public "-//W3C//DTD XHTML 1.0 Transitional //EN"
"http://www.w3.org/TR/xhtmll/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>Chapter 7: Example 1</title>
<script type="text/javascript">
function window_onload()
{
var numberForms = document.forms.length;
var formindex;
for (formIndex = 0; formIndex < numberForms; formIndex++}
{
alert(document.forms(formIndex).name);
}
]
</script>
</head>
<body onload="window_onload()">
<form action="" name="form1">
<p>
This is inside form1.
</p>
</form>
<form action="" name="form2">
<p>
This is inside form2
</p>
</form>
<form action="" name="form3">
<p>
This is inside form3
</p>
</form>
</body>
</html>
I have saved the file as a .html, .js and a .htm and had no luck in getting it up and running when opening the browser and I'm looking for a reason why this has happened.
You've got several syntax errors. In the window_onload function you have a } instead of a closing ).
There's also a random ] at the very end of the function and your function is missing a closing )
I am working on forwarding data from the current page to the same next page i.e. whenever the page is loaded again, the code checks if there is any such storage, if it is then it loads the values in text box. I am not able to get it to work Below is the code -
<!DOCTYPE html>
<html lang="en" xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta charset="utf-8" />
<title></title>
<script type="text/javascript">
function values()
{
if(localStorage.getItem(pranav))
{
document.getElementById(FName).innerText= sessionStorage.getItem(pranav);
document.getElementById(OName).innerText= sessionStorage.getItem(k);
}
else
{
sessionStorage.setItem("pranav", "P");
sessionStorage.setItem("k", "P");
return;
}
}
</script>
</head>
<body>
<form name="myform" action="Idea.html" onload="values(this.form)">
<label>Please Enter Your Full Name = </label><input type="text" name="FName" id="FName" />
<label>Please Enter Your Current Organization</label><input type="text" name="OName" id="OName" />
<input type="submit" value="Submit" onclick="values(this.form)" />
</form>
</body>
</html>
Kindly help me as to why this is not working?
You haven't declared the pranav and k variables you used. Also when you are assigning a value to an input field you should use the .value property instead of .innerText.
Also you might consider splitting your code in 2 functions:
<!DOCTYPE html>
<html lang="en" xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta charset="utf-8" />
<title></title>
<script type="text/javascript">
function loadValues() {
var data = localStorage.getItem('data');
if(data) {
data = JSON.parse(data);
document.getElementById('FName').value = data.firstName;
document.getElementById('OName').value = data.lastName;
}
}
function saveValues() {
var data = {
firstName: document.getElementById('FName').value,
lastName: document.getElementById('OName').value
};
localStorage.setItem('data', JSON.stringify(data));
}
</script>
</head>
<body onload="loadValues()">
<form name="myform" action="Idea.html" onsubmit="saveValues()">
<label>Please Enter Your Full Name = </label>
<input type="text" name="FName" id="FName" />
<label>Please Enter Your Current Organization</label>
<input type="text" name="OName" id="OName" />
<input type="submit" value="Submit" />
</form>
</body>
</html>
I am trying to validate a simple form with JavaScript but cannot get the script to validate. When the Submit button is pressed there is no validation being run. If one of the boxes is left blank, the error message does not pop up to notify the user. However I am not seeing anything out of place. I am wondering if it isthe submit button is not working? Can anyone lend a hand?
<DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>LASTNAME: Warner Form Validation</title>
<script type="text/javascript">
function btnSubmit_onclick() {
var myForm = document.formContact;
if(myForm.txtAge.value == "" || myForm.txtName.value == "") {
alert.("Please complete all of the fields.");
if(myForm.txtName.vale == ""){
myForm.txtName.focus();
} else {
myForm.txtAge.focus();
} else{
alert("Thank you for completing the form"+myForm.txtName.value);
}
}
function txtAge_onblur() {
var txtAge = document.formContact.txtAge;
if(isNaN(txtAge.value) == true) {
alert("Please Enter a Valid Age");
txtAge.select();
}
function txtName_onchange(); {
window.status = "Hi" + document.form1.txtName.value;
docment.getElementById('greeting').innerHTML = "Hi" + document.frm1.txtName.value;
}
</script>
</head>
<body>
<form action="" id="formContact" method="post" onsubmit="return validate();" name="formContact">
<p>Name:<br />
<input type="text" name="theName"><span class="err" id="nameErr"></span>
</p>
<p>Age:<br />
<input type="text" name="theAge"><span class="err" id="ageErr"></span>
</p>
<p>
<p>How may we contact you?<br>
<input type="radio" name="contact" value="email">Email<br>
<input type="radio" name="contact" value="no contact">No Contact<br>
</p>
<p><input type="button" value="Submit" name="btnSubmit" onclick="btnSubmit_onclick></p>
</form>
<span id="results"></span>
</body>
</html>
Your code had SO many typo's. This works.
<DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>LASTNAME: Warner Form Validation</title>
<script type="text/javascript">
function btnSubmit_onclick() {
var myForm = document.formContact;
if(myForm.txtAge.value == "" || myForm.txtName.value == "") {
alert("Please complete all of the fields.");
if(myForm.txtName.vale == ""){
myForm.txtName.focus();
} else {
myForm.txtAge.focus();
}
} else{
alert("Thank you for completing the form"+myForm.txtName.value);
}
}
function txtAge_onblur() {
var txtAge = document.formContact.txtAge;
if(isNaN(txtAge.value) == true) {
alert("Please Enter a Valid Age");
txtAge.select();
}
function txtName_onchange() {
window.status = "Hi" + document.form1.txtName.value;
docment.getElementById('greeting').innerHTML = "Hi" + document.frm1.txtName.value;
}
}
</script>
</head>
<body>
<form action="" id="formContact" method="post" onsubmit="return validate();" name="formContact">
<p>Name:<br />
<input type="text" name="txtName"><span class="err" id="nameErr"></span>
</p>
<p>Age:<br />
<input type="text" name="txtAge"><span class="err" id="ageErr"></span>
</p>
<p>
<p>How may we contact you?<br>
<input type="radio" name="contact" value="email">Email<br>
<input type="radio" name="contact" value="no contact">No Contact<br>
</p>
<p><input type="button" value="Submit" name="btnSubmit" onclick="btnSubmit_onclick()"></p>
</form>
<span id="results"></span>
</body>
</html>
However be noted that you haven't used txtAge_onBlur or txtName_onChange functions anywhere. Also I suggest to add a numerical check to age field.
onclick="btnSubmit_onclick></p>
to
onclick="btnSubmit_onclick();"></p>
and
function btnSubmit_onclck() {
to
function btnSubmit_onclick() {
You have onsubmit="return validate();" yet I don't see validate() anywhere in your script.
Then in your script you have btnSubmit_onclck(), yet in your HTML you have onclick="btnSubmit_onclick.
So it's missing an i and in the HTML you are missing the closing ".
You also need to check the missing closing } on txtAge_onblur and btnSubmit_onclick
I'm trying to create a form submission and before the form is submitted, I want to verify the credentials.
I have both this so far
HTML formatted for XHTML
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">
<head>
<title> Registration Form</title>
<meta http-equiv="content-type" content="text/html; charset=utf-8"/>
<meta name="description" content="This is a form submission with validation"/>
<script type="text/javascript" src="validScript.js"></script>
</head>
<body>
<h1>Registration Form</h1>
<form id="registration" action="" onsubmit="return validation();" method="post" enctype="text/plain">
<p>Name: <input type="text" name="name" id="name"/></p>
<p class="error">Email Address: <input type="text" name="emailAddress" id="emailAddress"/></p>
<p><input type="submit" name="submit" value="Submit"/></p>
</form>
</body>
</html>
JavaScript:
function validation()
{
var vname = document.registration.name;
if(nameValid(vname))
{
return true;
}
return false;
}
function nameValid(vname)
{
var name_len = vname.value.length;
if (name_len == 0)
{
alert("Name is required");
vname.focus();
return false;
}
return true;
}
I'm having issues where it won't display alert the user that he/she prompted an empty name. I'm trying to valid the name and after this I'll add more functions for email address and other fields to be added. Note that this will later be used to email the form to a domain. Can someone help me figure out this problem?
Thanks
your validation function is incorrect, should be:
function validation()
{
var vname = document.getElementById("name");
if(nameValid(vname))
{
return true;
}
return false;
}
For access form elements values use document.getElementById("ElementID").value or use a javascript library like Jquery
In form add name="registration" and then check.
it will alert as you want.
and the reason is document.registration.name , where registeration is form name , not id.
If you're using jQuery I can recommend this plugin:
http://validval.frebsite.nl/
I tried quite some validation plugins before I came to this one: It has extensive validation options and it's not too fancy on the dialogs; This means easy to customize the look and feel.
In the following code , I have a javascript function and I am tring to change the backgroundColor of the page to a color passed in as a parameter. But my code doesn't work, can anybody help me what is wrong in my code?
HTML:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
<title>Changing Color</title>
<head>
<style type="text/css">
body {
background-color:#ffcccc;
}
</style>
</head>
<body>
<form>
<label>color: <input type="text" name="color"> </label>
<input name="color" type = "button" onClick = "changecolor(color.value) " value = "color">
</form>
</body>
</html>
Javascript:
function changecolor(colour)
{
document.bgcolor=colour;
}
Assuming colour contains a valid CSS color descriptor, you can write:
document.body.style.backgroundColor = colour;
you have to put the function in a script block.
...
</form>
<script type="text/javascript>
//function declaration
</script>
Try this code it works finely man .i have just tried it.you can use it where-ever you want.also appended the code for onmouse click and onmouseover.
<html>
<head>
<script language="javaScript">
function change_background(color){
document.bgColor = color;
}
</script>
</head>
<body>
<form>
<label>color: <input type="text" name="color" >
</label>
<input name="clrs" type ="button" value="getcolor" onClick = "change_background(color.value) " >
</form>
ClickBlue
Mouseoverblack
Mouseover white
</body>
</html>`