How to create an on/off switch with Javascript/CSS?
I want to 开发者_如何转开发have a sliding switch. On the left would be Off and on the right would be On. When the user toggles the switch, I want the 'slider' portion to slide to the other side and indicate it is off. I could then have a callback that takes as input the state of the toggle switch so I can act accordingly.
Any idea how to do this?
check out this generator: On/Off FlipSwitch
you can get various different style outcomes and its css only - no javascript!
You mean something like IPhone checkboxes? Try Thomas Reynolds' iOS Checkboxes script:
Once the files are available to your site, activating the script is very easy:
...
$(document).ready(function() { $(':checkbox').iphoneStyle(); });
Results:
Using plain javascript
<html>
<head>
<!-- define on/off styles -->
<style type="text/css">
.on { background:blue; }
.off { background:red; }
</style>
<!-- define the toggle function -->
<script language="javascript">
function toggleState(item){
if(item.className == "on") {
item.className="off";
} else {
item.className="on";
}
}
</script>
</head>
<body>
<!-- call 'toggleState' whenever clicked -->
<input type="button" id="btn" value="button"
class="off" onclick="toggleState(this)" />
</body>
</html>
Using jQuery
If you use jQuery, you can do it using the toggle function, or using the toggleClass function inside click event handler, like this:
$(document).ready(function(){
$('a#myButton').click(function(){
$(this).toggleClass("btnClicked");
});
});
Using jQuery UI effects, you can animate transitions: http://jqueryui.com/demos/toggleClass/
Initial answer from 2013
If you don't mind something related to Bootstrap, an excellent (unofficial) Bootstrap Switch is available.
It uses radio types or checkboxes as switches. A type attribute has been added since V.1.8.
Source code is available on Github.
Note from 2018
I would not recommend to use those kind of old Switch buttons now, as they always seemed to suffer of usability issues as pointed by many people.
Please consider having a look at modern Switches like those.
You can achieve this using HTML and CSS and convert a checkbox into a HTML Switch.
input.cmn-toggle-round + label {
padding: 2px;
width: 100px;
height: 30px;
background-color: #dddddd;
-webkit-border-radius: 30px;
-moz-border-radius: 30px;
-ms-border-radius: 30px;
-o-border-radius: 30px;
border-radius: 30px;
}
input.cmn-toggle-round + label:before, input.cmn-toggle-round + label:after {
display: block;
position: absolute;
top: 1px;
left: 1px;
bottom: 1px;
content: "";
}
input.cmn-toggle-round + label:before {
right: 1px;
background-color: #f1f1f1;
-webkit-border-radius: 30px;
-moz-border-radius: 30px;
-ms-border-radius: 30px;
-o-border-radius: 30px;
border-radius: 30px;
-webkit-transition: background 0.4s;
-moz-transition: background 0.4s;
-o-transition: background 0.4s;
transition: background 0.4s;
}
input.cmn-toggle-round + label:after {
width: 40px;
background-color: #fff;
-webkit-border-radius: 100%;
-moz-border-radius: 100%;
-ms-border-radius: 100%;
-o-border-radius: 100%;
border-radius: 100%;
-webkit-box-shadow: 0 2px 5px rgba(0, 0, 0, 0.3);
-moz-box-shadow: 0 2px 5px rgba(0, 0, 0, 0.3);
box-shadow: 0 2px 5px rgba(0, 0, 0, 0.3);
-webkit-transition: margin 0.4s;
-moz-transition: margin 0.4s;
-o-transition: margin 0.4s;
transition: margin 0.4s;
}
input.cmn-toggle-round:checked + label:before {
background-color: #8ce196;
}
input.cmn-toggle-round:checked + label:after {
margin-left: 60px;
}
.cmn-toggle {
position: absolute;
margin-left: -9999px;
visibility: hidden;
}
.cmn-toggle + label {
display: block;
position: relative;
cursor: pointer;
outline: none;
-webkit-user-select: none;
-moz-user-select: none;
-ms-user-select: none;
user-select: none;
} <div class="switch">
<input id="cmn-toggle-1" class="cmn-toggle cmn-toggle-round" type="checkbox">
<label for="cmn-toggle-1"></label>
</div>Outline: Create two elements: a slider/switch and a trough as a parent of the slider. To toggle the state, switch the slider element between an "on" and an "off" class. In the style for one class, set "left" to 0 and leave "right" the default; for the other class, do the opposite:
<style type="text/css">
.toggleSwitch {
width: ...;
height: ...;
/* add other styling as appropriate to position element */
position: relative;
}
.slider {
background-image: url(...);
position: absolute;
width: ...;
height: ...;
}
.slider.on {
right: 0;
}
.slider.off {
left: 0;
}
</style>
<script type="text/javascript">
function replaceClass(elt, oldClass, newClass) {
var oldRE = RegExp('\\b'+oldClass+'\\b');
elt.className = elt.className.replace(oldRE, newClass);
}
function toggle(elt, on, off) {
var onRE = RegExp('\\b'+on+'\\b');
if (onRE.test(elt.className)) {
elt.className = elt.className.replace(onRE, off);
} else {
replaceClass(elt, off, on);
}
}
</script>
...
<div class="toggleSwitch" onclick="toggle(this.firstChild, 'on', 'off');"><div class="slider off" /></div>
Alternatively, just set the background image for the "on" and "off" states, which is a much easier approach than mucking about with positioning.
You can take a look at Shield UI's Switch widget. It is as easy to use as this:
<input id="switch3" type="checkbox" value="" />
<script>
jQuery(function ($) {
$("#switch3").shieldSwitch({
onText: "Yes, save it",
ffText: "No, delete it",
cls: "large"
});
});
</script>
加载中,请稍侯......
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