【JavaScript】解决IE8下，用js不能选择class的
2018-03-24 本文已影响18人
德育处主任
cf9b35bc2fb4f9131e613a6c69d5535b.jpg
HTML代码
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>解决IE8不支持js选择class问题</title>
</head>
<body>
<p class="intro">Hello World!</p>
</body>
</html>
JavaScript代码
<script>
if (!document.getElementsByClassName) {
document.getElementsByClassName = function (className, element) {
var children = (element || document).getElementsByTagName('*');
var elements = new Array();
for (var i = 0; i < children.length; i++) {
var child = children[i];
var classNames = child.className.split(' ');
for (var j = 0; j < classNames.length; j++) {
if (classNames[j] == className) {
elements.push(child);
break;
}
}
}
return elements;
};
}
var txt = document.getElementsByClassName('intro')[0].innerHTML;
document.write(txt);
</script>
JavaScript & jQuery总目录：jQuery目录
