I am trying to identify elements by their tag name, but have trouble executing the toggle property using javascript. Perhaps I am not using toggle() correctly, please explain what I am doing wrong.
<!DOCTYPE html>
<html>
<head>
<style>
h1{
position: relative;
float:left
}
</style>
<script>
var x=document.getElementsByTagName("button");
var hello=document.getElementsByTagName("h1");
x.onclick=function(){
hello.toggle(
function(){hello.style.visibility:visible};
function(){hello.style.visibility:hidden};
)
}
</script>
</head>
<body>
<h1>hello</h1>
<button>Toggle between hide() and show()</button>
</body>
</html>
toggle() is a jquery function that shows hidden elements and vice versa.
To use it you need to add jquery in your html
e.g.
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.1.1/jquery.min.js"></script>
and then with jquery you can add an event listener to the button:
$('button').click(function() {
$('h1').toggle();
});
Related
I am fairly new to web development. I am trying to apply jQuery to my website, such that when the page loads up, the heading is animated. But for some reason I am not able to get it working. Here is the javascript code :
$(window).ready(function() {
$("h1").animate({left:'250px'});
});
Here is the relevant HTML code:
<!DOCTYPE html>
<html>
<head>
<title> Welcome! </title>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.11.2/jquery.min.js"></script>
<script src="jquery_functions.js"></script>
</head>
<body>
<h1>Hello!</h1>
</body>
</html>
CSS left only works with absolutely positioned elements. If you add position:absolute to your H1 tag, it will work.
$(window).ready(function() {
$("h1").animate({left:'250px'});
});
h1 { position: absolute; }
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.11.2/jquery.min.js"></script>
<h1>Hello!</h1>
This is because h1 may have a static position. You may need to set a CSS relative or absolute position to that element like
h1 {position: relative}
and this jQuery code will work
$(document).ready(function () {
$("h1").animate({
left: 250
});
});
See JSFIDDLE
I'm new myself but it appears your animate option is missing an argument.
$('img').animate({left: "-=10px"}, 'fast'); is an example. yours tells it how much to move, but you left off the how.
You can try changing
$("h1").animate({left:'250px'});
to
$("h1").animate({marginLeft:'250px'});
maybe $(doucment).ready()
I think it will be work ))
Below is my code that is suppose to be a script that changes the color of the square after you click on in using toggleclass() method in jquery. I think my code is right but I can not get the square to change color. what am I doing wrong? thanks
Here is my code:
<!DOCTYPE html>
<html>
<head>
<title>My Page</title>
<script src="js/jquery-1.11.1.min.js"></script>
<script type="text/javascript" language="javascript">
<script>
$( "p" ).click(function() {
$( this ).toggleClass( "p.over" );
});
</script>
<style>
p { background:#DAA520; font-weight:bold; cursor:pointer;
padding:5px;width:20%;}
p.over { background: #ADFF2F; }
span { color:red; }
</style>
</head>
<body>
<p>Click or double click here.</p>
<span></span>
</body>
</html>
Fix the toggleClass call, you only need the class name, not the selector: toggleClass('over') instead of toggleClass('p.over').
Then, you have two opening script tags:
<script type="text/javascript" language="javascript">
<script>
Remove the first one.
Next, you're binding an event listener to an element that's not in the DOM yet at the time the script executes.
Simple fix: move the script to the bottom of the page.
Another way: either execute the script when the DOM is ready (by wrapping it inside a document ready callback: $(document).ready()) or use dynamic binding using jQuery's on function.
Here is a working version: http://jsfiddle.net/7g95yvyo/
And the last, but not the least, learn to use browser's console - it will help you tremendeously while learning and debugging JavaScript.
css class is a .whatever rule, You don't have any classes in your CSS definitions, just elements.
.foo { color: puce } /* this is a class */
p { color: chartreuse } /* this is an element */
p.foo { color: aubergine } /* this is an element AND a class */
toggleClass('foo');
You're toggling on element.class, but toggleClass expects ONLY a class, not the element.
When building my website, I decided I wanted to add a show/hide (spoiler) section in order to conserve space. Here is my "working" code:
JQuery:
$(document).ready(function(){ //Waits for page load
$("a.spoilerButton, a.spoilerButtonDark").click(function () { //Attaches listeners
$($(this).attr('href')).slideToggle(1000, null); //Open/closes spoiler
});
});
CSS:
a.spoilerButton,
a.spoilerButtonDark {
text-decoration:none;
color:white;
}
a.spoilerButton:hover,
a.spoilerButtonDark:hover {
color:grey;
cursor: pointer;
}
a.spoiler {
display:none;
}
HTML:
<div id="spoiler1" class="spoiler">Content</div> <!--Spoiler-->
<div class="contentBoxFooter">
Show/Hide <!--Button-->
</div>
What I would like:
Support for multiple buttons
A way to link the buttons to its appropriate spoiler at any place in the HTML
Problems I am facing:
Don't exactly know the proper way to link the button to its appropriate spoiler, or if I'm
doing it completely wrong
Current method uses href in anchor tag which shifts the page scroll location whenever clicked on
Main Question:
I thought about using the ID tag in the anchor tag to tell the script what the spoiler ID was, although I don't think ID tags were intended for that. Is that how I should go about doing this, or is it not the proper way to do it?
I dont know if i understand your question correctly.
On this page there are four links that open the respective spoiler tags.
This is just a simple example, I hope it can help you.
<!DOCTYPE HTML>
<html>
<head>
<meta charset="utf-8">
<title></title>
<style>
.spoiler {
display:none;
width:100%;
height:50px;
background-color:red;
margin-bottom:10px;
}
.contentBoxFooter{position:absolute;bottom:10px;}
</style>
</head>
<body>
<div id="a1" class="spoiler">Content</div>
<div id="a2" class="spoiler">Content</div>
<div id="a3" class="spoiler">Content</div>
<div id="a4" class="spoiler">Content</div>
<div class="contentBoxFooter">
Show/Hide
Show/Hide
Show/Hide
Show/Hide
</div>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js"></script>
<script type="text/javascript">
$(document).ready(function(){
$(".spoilerButton").click(function (e) {
e.preventDefault()
var foo=$(this).attr('href')
$('#'+foo).slideToggle(1000);
});
});
</script>
</body>
</html>
I have an element which has to be hidden when JavaScript is enabled. The current code seems like this:
<body>
...
<div id="js-hidden"></div>
...
<script src="jquery.js"></script>
<script>
$(document).ready(function() {
$('#js-hidden').hide();
})
</script>
There is the problem, the js-hidden div is visible since the rest of page (and JavaScripts) are loaded.
Can I hide that earlier? This solution is so bad for me, JS user can´t see this element.
PS: I've written the example with using jQuery, it can be in plain JS too, of course :-)
$(document).ready makes it happen after full page loaded you can use
<body>
...
<div id="js-hidden"></div>
...
<script src="jquery.js"></script>
<div id="js-hidden"></div>
<script>
$('#js-hidden').hide();
</script>
Simplest thing:
<style>
.js-hidden {
display: none;
}
</style>
<noscript>
<style>
.js-hidden {
display: block;
}
</style>
</noscript>
Since you cannot use onload event on div I guess the best solution is put your js right after that div...
I need to check if browser JavaScript is off, then display a error div instead of the body, how can I do this?
You'll need to do it the other way around - so to speak - you'll have to output everything, and then hide/ remove the error div using Javascript.
It's called Progressive Enhancement.
<html class="no-js">
<head>
<style>
.error,
.no-js #container {
display: none;
}
.no-js .error {
display: block;
}
</style>
<script>
document.documentElement.className = document.documentElement.className.replace(/\bno-js\b/, '');
</script>
</head>
<body>
<div id="container">
rest of page
</div>
<div class="error">
sorry, no javascripty, no sitey!
</div>
</body>
</html>
Of course, this is usually a bad idea, but I hope you've already considered that.
in the body you can add :
<noscript>
Here the html to display when javascript is off
</noscript>
#roryf's solution is a good approach, although it is dependent on jQuery, and if the domloaded event fires a little late you can get a 'flash' of the no-js content.
The following will remove the html.no-js class before the body has rendered:
<!DOCTYPE html>
<html class="no-js">
<head>
<script>
if (document.documentElement) {
var cn = document.documentElement.className;
document.documentElement.className = cn.replace(/no-js/,'');
}
</script>
</head>