[^...]检查搜索的字符串中是否不存在括号之间的任何一个字符。
例以下示例显示了 RegExp 表达式的用法。
<html>
<head>
<title>JavaScript RegExp</title>
</head>
<body>
<script type = "text/javascript">
var str = "first";
var pattern = /[^abcde]/g;
var result = str.match(pattern);
document.write("Test 1 - returned value : " + result);
str = "second";
result = str.match(pattern);
document.write("<br/>Test 2 - returned value : " + result);
</script>
</body>
</html>
输出
Test 1 - returned value : f,i,r,s,t
Test 2 - returned value : s,o,n
Test 2 - returned value : s,o,n
