如何使用jquery随机化CSS属性的值？
[英]How can I randomize the value of CSS attributes using jquery?
问题描述
I'm trying to use jquery to make a css selector randomize one of its values on an html element. 
我正在尝试使用jquery使css选择器随机化其在html元素上的值之一。 I've gotten as far as randomizing the selector for all of the elements (cycling through colors on a list border-left), however I want to randomize each individual list element at the same time. 我已经对所有元素的选择器进行了随机化（在列表左边框的颜色之间循环），但是我想同时对每个单独的列表元素进行随机化。
Apologies if that's confusing (I'm confused by it myself), but you'll understand if you run the below code a few times and watch the border color change. 抱歉，这很令人困惑（我自己对此感到困惑），但是如果您多次运行以下代码并注意边框颜色的变化，您将理解。 Ideally, those border colors would all be different. 理想情况下，这些边框颜色将全部不同。
Thanks very much for any help. 非常感谢您的帮助。
<html>
<head>
<title>Title</title>
<script src="http://code.jquery.com/jquery-latest.min.js"
type="text/javascript"></script>
<style>
.bars{
border-left-style: solid;
border-left-width: 4px;
padding-left: 10px;
}
ul{
list-style-type: none;
}
</style>
</head>
<body>
<ul>
<li class="bars">
<a>Marathon Men and Women</a>
</li>
<li class="bars">
<a>Marathon Men and Women</a>
</li>
<li class="bars">
<a>Marathon Men and Women</a>
</li>
<li class="bars">
<a>Marathon Men and Women</a>
</li>
<li class="bars">
<a>Marathon Men and Women</a>
</li>
</ul>
</body>
<script>
$(document).ready(function(){
var colors = ["#CCCCCC","#333333","#990099"];
var rand = Math.floor(Math.random()*colors.length);
$('.bars').css("border-left-color", colors[rand]);
});
</script>
4 个解决方案
解决方案1
4 已采纳 2014-04-12 02:56:38
You can use jQuery.each() function to specify individual colors: http://jsfiddle.net/qaF24/ 您可以使用jQuery.each（）函数指定单独的颜色： http : //jsfiddle.net/qaF24/
$(document).ready(function(){
var colors = ["#CCCCCC","#333333","#990099"];
$('.bars').each(function() {
var rand = Math.floor(Math.random()*colors.length);
$(this).css("border-left-color", colors[rand]);
});
});
解决方案2
1 2014-04-12 02:58:16
http://jsfiddle.net/RMR42/1/ http://jsfiddle.net/RMR42/1/
var colors = ["#CCCCCC", "#333333", "#990099"];
var bars = document.getElementsByClassName('bars');
for (var i = 0; i < bars.length; i++) {
bars[i].style.borderLeftColor = colors[Math.floor(Math.random() * colors.length)];
}
Maybe a vanilla solution will help somebody. 也许有效的解决方案将对某人有所帮助。 Faster, without more code. 更快，无需更多代码。
解决方案3
0 2014-04-12 02:58:00
The jQuery selector ('.bars') is selecting all elements of the class 'bar'. jQuery选择器（.bars）选择类“ bar”的所有元素。 Of course it's going to set them all the same. 当然，将它们设置为相同。
I would recommend instead assign an id to the parent element and then use the .children() selector to iterate through each <li> and assign a color. 我建议改为为父元素分配一个id，然后使用.children()选择器遍历每个<li>并分配颜色。
something like 就像是
<ul id="bars">
<li>
<a>Marathon Men and Women</a>
</li>
<li>
<a>Marathon Men and Women</a>
</li>
<li>
<a>Marathon Men and Women</a>
</li>
<li>
<a>Marathon Men and Women</a>
</li>
<li>
<a>Marathon Men and Women</a>
</li>
</ul>
<script>
$(document).ready(function(){
var colors = ["#CCCCCC","#333333","#990099"],rand;
var ligroup = $('#bars').children();
for (var i=0,len=ligroup.length;i<len;i++) {
rand = Math.floor(Math.random()*colors.length);
$(ligroup[i]).css("border-left-color", colors[rand]);
}
});
</script>
解决方案4
0 2014-04-12 03:46:02
$(document).ready(function () {
var bars = document.getElementsByClassName('bars');
for (var i = 0; i < bars.length; i++) {
bars[i].style.borderLeftColor ="#"+genColor();
}
});
Random color generator for each Li : http://jsfiddle.net/RMR42/2/ 每个Li的随机颜色生成器： http : //jsfiddle.net/RMR42/2/
you have to use some sort of looping through all the similar class elements if you want each individual to be different and random. 如果您希望每个人都是不同且随机的，则必须在所有相似的类元素中使用某种循环。
reference: https://gist.github.com/wfreeman/1158409 参考： https : //gist.github.com/wfreeman/1158409
声明:本站的技术帖子网页，遵循CC BY-SA 4.0协议，如果您需要转载，请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.