代码示例:(标识:eg_js_string_replace)
<!DOCTYPE html>
<html>
<body>

<h1>JavaScript 字符串方法</h1>

<p>请把下面的段落中的“Microsoft”替换为“(www.sou-xun.com)”:</p>

<button onclick="myFunction()">试一试</button>

<p id="demo">请访问 Microsoft!</p>

<script>
function myFunction() {
  var str = document.getElementById("demo").innerHTML; 
  var txt = str.replace("Microsoft","(www.sou-xun.com)");
  document.getElementById("demo").innerHTML = txt;
}
</script>

</body>
</html>
运行结果: