我正在使用JavaScript和getElementsByClassName()
执行一些小文本,并且得到了一些不需要的结果。我想要脚本将每个CSS类更改为新类。问题是,每隔一个类只会更改...
出于练习目的,我想使用纯JS来解决这个问题。
首先想到的是空格,但是去掉空格后并没有任何区别。
有人能指出我做错了什么吗?
<html>
<head>
<link rel="stylesheet" type="text/css" href="default.css">
</head>
<body>
<div class="block-default">BLOCK1</div>
<div class="block-default">BLOCK2</div>
<div class="block-default">BLOCK3</div>
<div class="block-default">BLOCK4</div>
<div class="block-default">BLOCK5</div>
<div class="block-default">BLOCK6</div>
<div class="block-default">BLOCK7</div>
<div class="block-default">BLOCK8</div>
<script>
var blockSet = document.getElementsByClassName("block-default");
var blockSetLength = blockSet.length;
blockSet[0].className = "block-selected";
blockSet[1].className = "block-selected";
blockSet[2].className = "block-selected";
blockSet[3].className = "block-selected";
blockSet[4].className = "block-selected";
blockSet[5].className = "block-selected";
blockSet[6].className = "block-selected";
blockSet[7].className = "block-selected";
</script>
</body>
</html>
CSS 类:
.block-default {
width: 100px;
height:50px;
background-color: green;
border: 1px solid red;
padding:10px;
}
.block-selected {
width: 100px;
height:50px;
background-color: blue;
border: 1px solid white;
padding:10px;
}
blockSetLength
是用来做什么的? - yaakov