I want to disable and enable input text if action add input text enable And if action edit input text disable
thanks
You can achieve this using the jQuery function prop() :
Javscript
var value = $('input').val();
if (value == null) {
$("input").prop('disabled', false);
} else {
$("input").prop('disabled', true);
}
Here is a demo: JsFiddle
Since you have not provided any snippet, I tried to replicate it witll following codes.
HTML
<input type = "text" id ="demoI">
<input type = "button" value = "Add" id = "_add">
<input type = "button" value = "Edit" id = "_edit">
JS
window.onload=function(){
var _getInput=document.getElementById("demoI");
var _getAdd = document.getElementById("_add");
var _getEdit = document.getElementById("_edit");
_getAdd.addEventListener('click',function(event){
_getInput.disabled = true;
})
_getEdit.addEventListener('click',function(event){
_getInput.disabled = false;
})
}
Check this jsFiddle
You can do this in your view.
if( $this->uri->segment(3) == 'add' ) {
<input type="text" name="myfield" disabled />
} else {
<input type="text" name="myfield" />
}
Try this code:
you can do this with java script only, there is no need to use jQuery
window.onload = function(){
var fname = document.getElementById("fname").value;
if(fname == '')
{
document.getElementById("fname").disabled = false;
}
else
{
document.getElementById("fname").disabled = true;
}
}
First Name: <input type="text" name="fname" id="fname" >
Related
I am writing a validation function for a html code that was given to me for my class, but am not allowed to change the html code besides adding a head and script. I am at such an early stage that I don't know how to use jQuery yet and would like help with validation for the multiple radio buttons.
I have tried looking for the answer on this and many other sites and just can't seem to find it. I have tried multiple codes, but I suspect that all of them were made with jQuery.
The input for the html
<input type = "radio" name = "radNewsletter" value = "" />Health and Wellness<br />
<input type = "radio" name = "radNewsletter" value = "" />Creative Writing<br />
<input type = "radio" name = "radNewsletter" value = ""/>Gardening
The existing validation
function validateForm() {
var x = document.forms["frmNews"]["txtName"].value;
if (x == "") {
alert ("Name must be filled out.");
return false;
}
var y = document.forms["frmNews"]["txtEmail"].value;
if (y == "") {
alert ("Email must be filled out.");
return false;
}
I was unable to get any other output than the form validating when I pressed the submit button, even when the existing validation should have stopped it.
I found that radNewsletter is a common name in your form. In order to validate forms for radio buttons, you can use below code.
function validateForm() {
var radios = document.getElementsByName("radNewsletter");
var formValid = false;
var i = 0;
while (!formValid && i < radios.length) {
if (radios[i].checked) formValid = true;
i++;
}
if (!formValid) alert("Must check some option!");
console.log(formValid)
return formValid;
}
<input type = "radio" name = "radNewsletter" value = "" />Health and Wellness<br />
<input type = "radio" name = "radNewsletter" value = "" />Creative Writing<br />
<input type = "radio" name = "radNewsletter" value = ""/>Gardening
<br />
<button onclick="validateForm()">Validate
</button>
function validateForm() {
var radios = document.getElementsByName("radNewsletter");
if(!radios.checked)
{
alert("we are testing")
}
if(radios.checked = true){
alert("your checking the boxs")
}
}
Use document.querySelector and pusedo selector checked. This line document.querySelector('input[name="radNewsletter"]:checked') will give the first radio button with the name radNewsletter which is checked. On click of button check if this value is not null. Hopefully you can validate using this
function validate() {
let isChecked = document.querySelector('input[name="radNewsletter"]:checked');
if (isChecked !== null) {
console.log(isChecked.value);
}
}
<input type="radio" name="radNewsletter" value="hw">Health and Wellness<br />
<input type="radio" name="radNewsletter" value="cw">Creative Writing<br />
<input type="radio" name="radNewsletter" value="g">Gardening<br/>
<button type='button' onclick='validate()'>Validate</button>
(This text box value comes dynamically)
If textbox gets value 100 it will enable submit button but here enable submit button after editing the value to 100 without changing it won't enable.
<script>
function manage(txt) {
var bt = document.getElementById('btSubmit');
if (txt.value != '100') {
bt.disabled = true;
}
else {
bt.disabled = false;
}
}
</script>
It depends on the browser. To make sure that works, use setAttribute and removeAttribute
var bt = document.getElementById('btSubmit');
bt.setAttribute("disabled","disabled");
bt.removeAttribute("disabled");
Can you check this:
function manage(txt) {
var bt = document.getElementById('btSubmit');
if (txt.value != '100') {
console.log('Disabled');
bt.setAttribute("disabled", "true");
} else {
console.log('Enabled');
bt.removeAttribute("disabled");
}
}
<input type="text" id="txt" onkeyup="manage(this)" />
<input type="submit" id="btSubmit" disabled="true" />
Not absolutely sure what the problem is here since your example is not an MCVE, but you can use the "keyup" event to listen to any changes made to your input element while typing.
Also, your code is unnecessarily verbose:
/* ----- JavaScript ----- */
document.getElementById("txt").addEventListener("keyup", function () {
/* Disable the button, if the value of the input is <> 100. */
document.getElementById("btSubmit").disabled = (this.value != 100);
});
<!----- HTML ----->
<input type = "text" id = "txt"/>
<input type = "submit" id = "btSubmit" disabled/>
If you prefer using inline JavaScript in your HTML code, the above solution can be written as:
/* ----- JavaScript ----- */
function manage (element) {
/* Disable the button, if the value of the input is <> 100. */
document.getElementById("btSubmit").disabled = (element.value != 100);
}
<!----- HTML ----->
<input type = "text" id = "txt" onkeyup = "manage(this)"/>
<input type = "submit" id = "btSubmit" disabled/>
I need to take the value from an input box and write it below the input box on the click of a button. I thought to use a label but if there is another way I am open to suggestions.
My code so far:
<h1>Test</h1>
<form name="greeting">
Type your name here: <input type = "Text" name="fullname" id="name"> <button onclick="getName()">Create</button><br>
Hello <label id="greet">Hello</label>
</form>
<script lang="javascript">
function getName() {
var inputVal = document.getElementById("name").value;
if (inputVal == "") {
document.getElementById("name").style.backgroundColor = "red";
}
else {
document.write("Hello " + document.getElementById("name"));
}
First of all, you don't want to submit a form, so change button type from "submit" (default) to "button".
Then you should not use document.write almost never, it's used in very specific cases. Use proper DOM manipulation methods like appendChild. I would use convenient insertAdjacentHTML:
function getName() {
var input = document.getElementById("name");
if (input.value == "") {
input.style.backgroundColor = "red";
} else {
input.insertAdjacentHTML('afterend', '<div>' + input.value + '</div>');
}
}
<form name="greeting">Type your name here:
<input type="Text" name="fullname" id="name" />
<button type="button" onclick="getName()">Create</button>
<br>Hello
<label id="greet">Hello</label>
</form>
First you need to stop your form from submitting. Second you should not use document.write, since it will not append the text as wanted after the input field. And last you need to validate the elements value and not the element itself.
<html>
<head>
<script>
//First put the function in the head.
function getName(){
var input = document.getElementById("name");
input.style.backgroundColor = ''; //Reseting the backgroundcolor
if (input.value == ''){ //Add the.value
input.style.backgroundColor = 'red';
}
else{
//document.write('Hello ' + input.value); //This would overwrite the whole document, removing your dom.
//Instead we write it in your greeting field.
var tE = document.getElementById('greet');
tE.innerHTML = input.value;
}
return false //Prevent the form from being submitted.
}
</script>
</head>
<body>
<h1>Test</h1>
<form name = 'greeting'>
Type your name here: <input type = "Text" name="fullname" id="name"> <button onclick="return getName()">Create</button><br>
Hello <label id="greet">Hello</label>
</form>
</body>
</html>
You need to cancel the submit event which makes the form submit, alternatively you could not wrap everything inside a form element and just use normal div that way submit button wont submit.
Demo : https://jsfiddle.net/bypr0z5a/
Note reason i attach event handler in javascript and note onclick attribute on button element is because jsfiddle works weird, on ordinary page your way of calling getName() would have worked.
byId('subBtn').onclick = function (e) {
e.preventDefault();
var i = byId('name'),
inputVal = i.value;
if (inputVal == "") {
i.style.backgroundColor = "red";
} else {
byId('greet').innerText = inputVal;
i.style.backgroundColor = "#fff";
}
}
function byId(x) {
return document.getElementById(x);
}
I want to let my two textboxes be checked before those get submitted.
like
if textbox1 >= textbox2 submit
else show errorlabel and dont submit.
How can i do this?
Provide your onclick handler's implementation to extract the value of the two text boxes, then parse them as an int.
function submitForm() {
var first = parseInt(document.getElementById("first"), 0);
var second = parseInt(document.getElementById("second"), 0);
if(first >= second) {
// ...
return true;
} else {
var hiddenTextBox = document.getElementById("error");
hiddenTextBox.style.visibility = "visible";
return false;
}
}
This assumes you have two elements with id="first" and id="second" respectively, and a hidden element with id="error"
Try it like,
$('#submitId').on('click',function(){
if $('#textbox1').val() < $('#textbox2').val()){
$('#erroLabel').show(); // showing error label
return false; // to prevent submitting form
}
});
You can make function in javascript,
<script type="text/javascript">
function checkValues()
{
var searchtext1 = document.getElementById("textbox1").value;
if(searchtext1=='')
{
alert('Enter any character');
return false;
}
var searchtext2 = document.getElementById("textbox2").value;
if(searchtext2=='')
{
alert('Enter any character');
return false;
}
}
</script>
and then in html form
<form method='GET' onSubmit="return checkValues();">
<input type="text" id= "textbox1" name="textbox1" class='textbox' >
<input type="text" id= "textbox2" name="textbox2" class='textbox' >
<input type="submit" id='submit' value="Search" class ='button' >
</form>
I'm trying to prevent text from being entered in a textbox unless a checkbox that corresponds with the textbox is checked.
// Validate "Other" textbox
var isOther = document.getElementById("isOther");
isOther.addEventListener("input", function (evt) {
// Checkbox must be checked before data can be entered into textbox
if (isOther.checked) {
document.getElementById("other").disabled = false;
} else {
document.getElementById("other").disabled = true;
}
});
Do not use disabled. Instead use readonly. During document load, uncheck and disable the inputs:
<input type="checkbox" id="isOther" />
<input type="text" id="other" readonly />
And use this script.
// Validate "Other" textbox
var isOther = document.getElementById("isOther");
var other = document.getElementById("other");
isOther.addEventListener("click", function () {
other.readOnly = !isOther.checked;
});
other.addEventListener("focus", function (evt) {
// Checkbox must be checked before data can be entered into textbox
other.readOnly = !isOther.checked;
});
Longer version.
// Validate "Other" textbox
var isOther = document.getElementById("isOther");
var other = document.getElementById("other");
isOther.addEventListener("click", function () {
if (isOther.checked) {
other.readOnly = false;
} else {
other.readOnly = true;
}
});
other.addEventListener("focus", function (evt) {
// Checkbox must be checked before data can be entered into textbox
if (isOther.checked) {
this.readOnly = false;
} else {
this.readOnly = true;
}
});
Fiddle: http://jsfiddle.net/praveenscience/zQQZ9/1/
Fiddle: http://jsfiddle.net/praveenscience/zQQZ9/
My solution uses jQuery library. Here's a fiddle: http://jsfiddle.net/8LZNa/
Basically I'm disabling the input on page load:
<input name="isOther" type="checkbox" id="isOther" /><br />
<input type="text" id="other" disabled/>
... and when isOther changes it will make sure it is checked, and change the state to enabled. Or change back to disabled.
$('input[name=isOther]').change(function(){
if($(this).is(':checked')) {
$("#other").removeAttr('disabled');
}
else{
$("#other").attr('disabled','disabled');
}
});
You can do this:
document.getElementById( 'isOther' ).onChange = function(){
document.getElementById("other").disabled = !this.checked;
};
Without the use of jQuery or disabled property:
HTML
<input type="checkbox" id="x" value="Enable textbox" onclick="test(this);" />
<input type="text" id="y" readonly />
JAVASCRIPT
function test(checkbox) {
if(checkbox.checked) {
document.getElementById('y').readOnly = false;
}
else {
document.getElementById('y').readOnly = true;
}
}