js获取多个标签元素的内容，并根据元素的内容修改标签的属性

<html >
<head>
<title>无标题文档</title>
</head>

<body>
<div class="aaa">你好</div>
<div class="bbb" style="display:none;">更改我的属性</div>

<div class="aaa"></div>
<div class="bbb" style="display:none;">更改我的属性</div>

<div class="aaa">你好</div>
<div class="bbb" style="display:none;">更改我的属性</div>
</body>
</html>
<script>
var arr = document.getElementsByClassName('aaa'),temp = [];
var brr=document.getElementsByClassName('bbb');
for(var i = 0;i<arr.length;i++){
temp.push(arr[i].innerHTML)
}
for(var i = 0;i<arr.length;i++)
{
if(temp[i]=='你好')
{
brr[i].style.display="block";
}
}    
</script>

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