代码
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<html>
<head>
<script type="text/javascript" src="/jquery/jquery.js"></script>
<script type="text/javascript">
$(document).ready(function(){
$("#b01").click(function(){
htmlobj=$.ajax({url:"/jquery/test1.txt",async:false})
$("#myDiv").html(htmlobj.responseText)
})
})
</script>
</head>
<body>
<div id="myDiv"><h2>通过 AJAX 改变文本</h2></div>
<button id="b01" type="button">改变内容</button>
</body>
</html>
const p = 'The quick brown fox jumps over the lazy dog. If the dog reacted, was it really lazy?'console.log(p.replace('dog', 'monkey'))
// expected output: "The quick brown fox jumps over the lazy monkey. If the dog reacted, was it really lazy?"
const regex = /Dog/i
console.log(p.replace(regex, 'ferret'))
// expected output: "The quick brown fox jumps over the lazy ferret. If the dog reacted, was it really lazy?"
首先，只能取出inline的JS内容，如果脚本是通过 src 加载进来的，这个是没办法取出的。对于 inline 的 JS 内容，高端浏览器使用 textContent ，IE6/7/8 使用 innerText。下面是例子：
<script id="s1">alert(1)</script>
var script = document.getElementById( 's1' )
var text = script.textContent || script.innerText
console.log( text )// output alert(1)
