I have tried to set a item to read only, as you see in the code i have tried several way and can't get that to work. Can anyone help me with this?
<html>
<script>
//test.Attributes.Add("readonly","readonly")
//document.getElementById('testtt').setAttribute('readonly', 'readOnly');
// document.getElementByID('test').value=readOnly;
//document.getElementByID('test').readOnly = true;
// $("#test").attr("readonly", "readonly");
//$("#test").removeAttr("readonly");
//$('#test').attr('readonly', 'readonly');
$("#test").attr("readonly")
</script>
<body>
<input id="test" type="text" value="text" />
</body>
</html>
$('#test').attr('readonly', true);
working example : http://jsfiddle.net/FBUDt/
this should work for you:
$("#test").attr("readonly", "readonly");
remember that the DOM needs to be loaded before you try to find the element
you could use jquerys DOM-ready
$(function() {
$("#test").attr("readonly", "readonly");
});
what version of jquery are you using?
You should try wrapping your code into $('document').ready();
According to the documentation,
The handler passed to .ready() is guaranteed to be executed after the DOM is ready, so this is usually the best place to attach all other event handlers and run other jQuery code.
So it would be:
$('document').ready(function(){
$("#test").attr("readonly", "readonly");
});
You can't refer to an element that is created later in the document. Move the script down below the form, or place it in a document.ready block. Also, you should use $.prop() in jQuery 1.6+
$(function(){
$('#test').prop('readonly', true);
});
I would go with
document.getElementById('test').setAttribute('readonly', 'readOnly');
But that is not the issue. The position of your script is where it goes wrong. You are trying to change element which does not exist.
<!DOCTYPE html>
<html>
<head>
<meta charset=utf-8 />
<title>testcase</title>
<link rel="stylesheet" href="stylesheet.css" type="text/css" />
</head>
<body>
<div class="some container">
<input id="test" type="text" value="text" />
</div>
<script type="text/javascript" charset="utf-8">
document.getElementById('test').setAttribute('readonly', 'readOnly');
</script>
</body>
</html>
If you place your scripts right befor the closing </body> tag , then it is executes as soon as DOM has been built.
And please. Stop using JS libraries to do the most basic things.
you are missing
$(document).ready(function() {
$('#test').attr('readonly', 'readonly');
});
sample
http://fiddle.jshell.net/Pe4J5/
Related
I need build code such : http://fiddle.jshell.net/bwKZt/152/
but my code dosen't work ! I am a beginner. Please help me.
index.php:
<!DOCTYPE html><html>
<head>
<script>
$("#label").bind("keyup", changed).bind("change", changed);
function changed() {
$("#url").val(this.value);
}
</script>
</head>
<body>
<input type="text" id="label" />
<input type="text" id="url" readonly />
</body>
</html>
Some of the JavaScript here isn't native JavaScript , but is using a plugin called jQuery that makes searching and manipulating HTML elements easier.
When you see $(), that's the jQuery way of finding elements. But it won't work because you don't have jQuery referenced at all.
If you don't want to use jQuery, you can find elements with something like document.getElementById('label').
But lots of people use jQuery to make referencing page elements short and sweet, as with $('#label').
Try to reference jQuery first, like:
<!DOCTYPE html><html>
<head>
<!-- The below line references an externally hosted copy of jQuery 2.2.4 -->
<script type="text/javascript" src="https://code.jquery.com/jquery-2.2.4.min.js"></script>
<script>
// The below chunk is telling it to bind to the keyup event only AFTER the document has fully loaded.
// Sometimes when your binding code is executed, the elements you wish to bind to aren't loaded yet.
$(document).ready(function(){
$("#label").bind("keyup", changed).bind("change", changed);
});
function changed() {
$("#url").val(this.value);
}
</script>
</head>
<body>
<input type="text" id="label" />
<input type="text" id="url" readonly />
</body>
</html>
The first problem is because you haven't include jquery with a script tag to solve that add this code in the head of you html file if you have the Internet connection to load Jquery from CDN
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.2.1/jquery.js"></script>
or you can download Jquery file from Jquery site and you will have it locally
after that you must execute this code after the executing the jquery ready function
$(document).ready(function(){
$("#label").bind("keyup", changed).bind("change", changed);
function changed() {
$("#url").val(this.value);
}
})
The below Jquery does not run within my browser even though the syntax is correct( checked via online syntax checker) and the functions do run (tested with pure JS). Why is it that so?
I apologize in advance if the answer to this question is rather simple but after 15min of googling I could not arrive at an answer.
JAVASCRIPT:
document.getElementById('overlay').addEventListener('click', function( {
closeLightBox()
});
function closeLightBox() {
$("#overlay").fadeOut(1000);
}
function lightbox(x) {
}
HTML
<!DOCTYPE html>
<html>
<head>
<title> Lightbox </title>
<link rel="stylesheet" type="text/css" href="lightboxcss.css">
</head>
<body>
<div id = "overlay"> </div>
<img src="batman.jpg" alt="" href="javascript:void(0)" onclick="lightbox(1)" id="batman" style="height:100px;width:160px;margin-left:45%;margin-top:16%;">
<br><br><br><br>
<p> RANDOM TEXT STUFF </p><br><br>
<p> 328ueekfuuirgh40t43h8hohro8ht </p>
<script src="lightboxjs.js"> </script>
</body>
</html>
I assume that javascript code is located in your .js file "lightboxjs.js". Did you include the jQuery library anywhere?
If you don't, start by adding this line <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/2.2.4/jquery.min.js"></script> before including your custom javascript file.
$(document).ready(function(){
//page is ready
$("#overlay").on("click",function(){
this.fadeOut(1000);
});
});
You cannot add an eventlistener if the dom isnt loaded. Also dont forget to include jquery before executing the upper script
...
Where are you calling the jquery lib? You need to load the jquery just above lightboxjs.js and may as well use jquery syntax to listen to the #overlay click event.
Here is my Jquery code.Please have a look through it and do help me?
<script type="text/javascript" src="jquery-1.9.1.min.js"></script>
<script type="text/javascript">
$("#rec").click(function() {
$("#tab1").toggle();
});
</script>
<input type="button" class="button" id="rec" value="Sample"/>
<div id="tab1">
Hello this is a sample jquery toggling function.
</div>
Just wrap your Jquery code inside $(document).ready(function(){}) as shown below :-
<script type="text/javascript">
$(document).ready(function(){
$("#rec").click(function(event) {
event.preventDefault();
$("#tab1").toggle();
});
});
</script>
Read More on $(document).ready() here.
Working Demo
It seems that there is an error while loading JQuery try this
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
Use $(document).ready(function(){}, to execute the js code when then document will be loaded or put your scripts just before the </body> tag.
I ll take a guess here. (I'm feeling lucky!) (update:seems i wasn't lucky but read this anyway it's usefull)
Your code does not work because you say "do something when the html element with id="rec" is clicked" and "do something to the html element with id="tab1""
My guess is, you have more than one html element with id="rec" and/or more than one html element with id="tab1" in your code.
id value of html elements must be unique across a webpage! If there are more than one html elements with the same id then the jquery selector doesn't know when to fire, and also browsers behavior can be unexpected. This may be the cause of internet explorer nagging.
You need to add compatibility meta just after <head> tag:
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge;chrome=1" />
So what i want to do is when i click on a button, it will pass this click event to another element in webpage, or you can say it will create a new click event in another element. Below is my code, it does not work, please let me know what is wrong with it, it looks make sense...
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8" />
<link rel="stylesheet" href="http://code.jquery.com/ui/1.10.0/themes/base/jquery-ui.css" />
<script src="http://code.jquery.com/jquery-1.8.3.js"></script>
<script src="http://code.jquery.com/ui/1.10.0/jquery-ui.js"></script>
<link rel="stylesheet" href="/resources/demos/style.css" />
<script>
$(function() {
$( "#datepicker" ).datepicker();
});
</script>
</head>
<body>
<p>Date: <input type="text" id="datepicker" onClick=alert("error") /></p>
<button type="button" value="submit" onClick="document.getElementById("datepicker").click()">submit </button>
</body>
</html>
Since you are using jQuery you can use this onClick handler which calls click:
$("#datepicker").click()
This is the same as $("#datepicker").trigger("click").
For a jQuery-free version check out this answer on SO.
The smallest change to fix this would be to change
onClick="document.getElementById("datepicker").click()">
to
onClick="$('#datepicker').click()">
click() is a jQuery method. Also, you had a collision between the double-quotes used for the HTML element attribute and those use for the JavaScript function argument.
To simulate an event, you could to use trigger JQuery functionnality.
$('#foo').on('click', function() {
alert($(this).text());
});
$('#foo').trigger('click');
The reason your code isn't working the way you would expect is because this line:
<button type="button" value="submit" onClick="document.getElementById("datepicker").click()">submit </button>
should be changed to:
<button type="button" value="submit" onClick="document.getElementById('datepicker').focus()">submit </button>
There are two things to notice here:
1: The "s around datepicker have been changed to 's so that they do not interfere with the quotes surrounding the onclick event.
2: The click() has been changed to focus() to activate the datepicker calendar. When the button is pressed.
Now, this fixes your issue...but I do agree with the other posts that using jQuery to access the DOM element and trigger the event is the better way to go. Since you're already doing this for the jQuery datapicker plugin via <script src="http://code.jquery.com/jquery-1.8.3.js"></script>, this should not be a problem.
Inline events are not recommended.
Or you can use what JQuery alreay made for you:
http://jqueryui.com/datepicker/#icon-trigger
It's what you are trying to achieve isn't it?
try this
document.getElementById("datapicker").addEventListener("submit", function())
Use this
jQuery("input.second").trigger("click");
The following jQuery example should put some text into the div, but it doesn't. I tried Firefox, Google Chrome and Internet Explorer.
<html>
<head>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js" language="javascript"></script>
<script language="javascript">
$(window).load(function() {
$('adiv').html('<p>hello world</p>');
alert('done');
});
</script>
</head>
<body>
<div id="adiv">
</div>
</body>
</html>
Sorry, this might be stupid, but I'm stuck.
change $('adiv').html('<p>hello world</p>');to
$('#adiv').html('<p>hello world</p>');
You're not actually selecting anything in your select function
Directly after your $( opening, you need to use a CSS3 valid selector. Just a string won't select anything unless it's a HTML element (table, div, h2)
You need to preface it with a . or a # to signal either a class or ID name.
$('adiv') should be $('#adiv').
Unlike Prototype, in jQuery you specify a CSS selector, not just a string that is implicitly inferred to be an ID. I find myself forgetting this from time to time.
As e-turhan already mentioned you need # in front of adiv in your $() otherwise this is not a id selector. Also it's always better to call these .load() events inside the .ready() jQuery event whose famous shortcut is $(function() { //execute when DOM is ready }); . In your case:
$(function(){
$(window).load(
function(){
$('#adiv').html('<p>hello world</p>');
}
);
<html> <head> <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js" language="javascript"></script> <script language="javascript"> $(window).load(function() { $('#adiv').html('<p>hello world</p>'); alert('done'); }); </script> </head> <body> <div id="adiv"> </div> </body> </html>
Paste this code instead ur query
It Will Work
Try $(document).ready(function()... instead of $(window).load(function()...