<!DOCTYPE html>
<html>
<body>
<h1>JavaScript 字符串</h1>
<p>转义序列 \' 在字符串中插入单引号。</p>
<p id="demo"></p>
<script>
var x = 'It\' good to see you!';
document.getElementById("demo").innerHTML = x;
</script>
</body>
</html>