问题
I have a div which has some text content( eg: My Name ) and the div is in RED background colour and a button.
My need :
If I have clicked the button , I need to change the background of a div from RED to BLUE like Progress bar for 10 seconds.Something like,
start from 0 sec
=
==
===
====
=====
======
=======
========
=========
==========
end with 10 seconds
I have to change the bgColor gradually from start to end for upto 10 secs.
So I have used the JQuery animate() method .But I have no luck to do that.
What I have tried :
$("button").click(function(){
$('#myDivId').animate({background-color:'blue'},10000);
});
If this is not possible , can anyone please suggest me some plugin's to do that.
Hope our stack users will help me.
回答1:
I thought your looking for a "Progress Bar Animation"? try this: i believe its what your looking for - the progress bar's horizontal loading motion in a jsfiddle here:
http://jsfiddle.net/c78vF/6/
with a few more elements you are able to simulate that easily using the same tech everyone else is using here... jquery ui etc
html:
<button>Button</button>
<div id='myDivId'>
<div class="progress"></div>
<div class="content">
DIV
</div>
</div>
css:
#myDivId{
background:red;
color:white;
padding:10px;
overflow:hidden;
position:relative;
}
.content{
z-index:9;
position:relative;
}
.progress{
z-index;1;
width:0px;
height:100%;
position:absolute;
background:blue;
left:0px;
top:0px;
}
js:
$("button").click(function(){
$('.progress').animate({ width: '100%' }, 10000);
});
回答2:
Background gradient loader - possibly more appropriate
You could also use the background gradient as the loader. Of course, jQuery doesn't natively support choosing correct CSS prefixes, so it may have to be tweeked to work in older browsers. But it'll work nicely where your browser supports linear-gradient.
Since jQuery won't animate a background gradient, I've animated a span within it and am using the step option to change the gradient stops each time. This means that any duration or easing changes to the animate() will apply to the gradient as well:
$("button").click(function(){
$('#loadContainer span').animate({width:'100%'}, {
duration:10000,
easing:'linear',
step:function(a,b){
$(this).parent().css({
background:'linear-gradient(to right, #0000ff 0%,#0000ff '+a+'%,#ff0000 '+a+'%,#ff0000 100%)'
});
}
});
});
JSFiddle
Original answer
background-color is the CSS style, you are targeting the property of the javascript object, which in this case, is backgroundColor. You'll want to change the color name as well.
$("button").click(function(){
$('#myDivId').animate({backgroundColor:'blue'},10000);
});
JSFiddle
回答3:
Or you could do the math and do the color change. http://jsfiddle.net/rustyDroid/WRExt/2/
> $("#btn").click(function(){
> $('#bar').animate({ width: '300px' },
> {
> duration:10000,
> easing:'linear',
> step:function(a,b){
> var pc = Math.ceil(b.now*255/b.end);
> var blue = pc.toString(16);
> var red = (255-pc).toString(16);
> var rgb=red+"00"+blue;
> $('#bar').css({
> backgroundColor:'#'+rgb
> });
> }
> })
> });
回答4:
This can be done using span changing its width over the time. Here is the working fiddle. The code is displayed below. Only the mandatory styles are displayed here.
HTML
<div class="red-button">
<span class="bg-fix"></span> //this is the only additional line you need to add
<p>Progress Button</p>
</div>
<button class="click-me">Click Me</button>
CSS
.red-button {
position: relative;
background: red;
}
span.bg-fix {
display: block;
height: 100%;
width: 0;
position: absolute;
top: 0;
left: 0;
background: blue;
transition: width 10s ease-in-out;
}
p {
position: relative;
z-index: 1
width: 100%;
text-align: center;
margin: 0;
padding: 0;
}
jQuery
$("div.red-button").click(function () {
$('span.bg-fix').css("width", "100%");
});
回答5:
- JavaScript variable names can't have dashes, it should be
backgroundColor. - You have
'red', so it will not change anything. Change the string to'blue'.
$("button").click(function(){
$('#myDivId').animate({ backgroundColor: 'blue' }, 10000);
});
回答6:
Furthemore of the previus coments (change background-color for backgroundColor) you also need the plugin Jquery Colors, I made a test and without it don't work.
Put this on the head:
<script src="http://code.jquery.com/color/jquery.color.plus-names-2.1.0.min.js"></script>
回答7:
try below code
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js"></script>
<script src="http://code.jquery.com/ui/1.10.3/jquery-ui.js"></script>
<script>
$(document).ready(function(){
$("#button").click(function(){
$('#myDivId').css("background-color","BLUE");
$( "#effect" ).animate({
backgroundColor: "yellow", }, 1000 );
});
});
</script>
<div id="myDivId" style="width:120;height:130;background-color:RED;text-align: center;">Text Area</div>
<input type="button" id="button" class="" name="click" value="click" >
And Let me know it's working or not...waiting for your reply .......
回答8:
If you are able to use latest CSS (which mean no stupid old browser), you may use CSS3's gradient function
$("#bar").mousemove(function (e) {
var now=e.offsetX/5;
$(this).css('backgroundImage', 'linear-gradient(to right, #00f 0%,#00f ' + now + '%,#f00 ' + now + '%,#f00 100%)');
}).click(function(e){
e.preventDefault();
var start=new Date().getTime(),
end=start+1000*10;
function callback(){
var now=new Date().getTime(),
i=((now-start) / (end-start))*100;
$("#bar").css('backgroundImage', 'linear-gradient(to right, #00f 0%,#00f ' + i + '%,#f00 ' + i + '%,#f00 100%)');
if(now<end){
requestAnimationFrame(callback, 10);
}
};
requestAnimationFrame(callback, 10);
});
Example at: http://jsfiddle.net/hkdennis2k/ebaF8/2/
回答9:
you can use this code:
jsFiddle is here
HTML:
<button>Button</button>
<div id='container'>
<div class="progress"></div>
<div class="content">
test Content
</div>
</div>
CSS:
#container{
background:#eee;
color:#555;
padding:10px;
overflow:hidden;
position:relative;
}
.content{
z-index:9;
position:relative;
}
.progress{
z-index;1;
width:0px;
height:100%;
position:absolute;
background:tomato;
left:0px;
top:0px;
}
.filling{
animation: fill 10s linear;
-webkit-animation: fill 10s; /* Safari and Chrome */
animation-timing-function:linear;
-webkit-animation-timing-function:linear; /* Safari and Chrome */
}
@keyframes fill
{
0% {background: red; width:0%;}
25% {background: yellow; width:25%;}
50% {background: blue; width:50%;}
75% {background: green; width:75%;}
100% {background: lightgreen; width:100%;}
}
@-webkit-keyframes fill /* Safari and Chrome */
{
0% {background: red; width:0%;}
25% {background: yellow; width:25%;}
50% {background: blue; width:50%;}
75% {background: green; width:75%;}
100% {background: lightgreen; width:100%;}
}
JQuery:
$("button").click(function(){
$('.progress').addClass("filling").css("background","lightgreen").width("100%");
});
回答10:
You need to use the jQuery.Color() plugin for background-color animation.
回答11:
Any particular reason you want to do this in jQuery as opposed to css3?
Bootstrap has a pretty nifty way of achieving this -> http://getbootstrap.com/components/#progress-animated
The .progress-bar class has a css3 transition set on the width property, so as you move between 0% & 100%, any updates to the width are smoothly animated. It also uses a css3 animation to animate the background gradient (striped pattern).
来源：https://stackoverflow.com/questions/19160147/animate-background-color-like-a-progress-bar-in-jquery