测试并验证requirejs domReady事件的触发时间点
<html>
<head>
<title>requirejs domReady test</title>
</head>
<body>
<img onload="console.log('image 1 loaded');" src="image1">
<img onload="console.log('image 2 loaded');" src="image2">
<script src="http://cdn.bootcss.com/jquery/2.2.0/jquery.min.js"></script>
<script src="http://cdn.bootcss.com/require.js/2.1.18/require.min.js"></script>
<script>
require(['main.js'], function() {});
</script>
</body>
</html>define([
'domReady'
], function (domReady) {
$(document).ready(function () {
console.log(document);
var childNodes = document.body.childNodes;
console.log('childNodes number: ' + childNodes.length);
for (var i = 0; i < childNodes.length; i++) {
console.log(childNodes[i] + ': ' + childNodes[i].nodeType);
}
console.log('jquery domReady');
});
domReady(function () {
console.log('requirejs domReady');
});
});
**结论：**可以看到，jquery的ready方法在DOM树构建后即触发，而requirejs的domReady方法则是在所有资源被加载完毕之后触发，相当于window.onload。
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