Javascript 正则表达式_5 

<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
    <title></title>
    <script type="text/javascript">
        window.onload = function () {
            var str = "a a a adb daf   sdf";
            var reg = /\s+/g;//\s 匹配任何不可见字符，包括空格、制表符、换页符等等。等价于[ \f\n\r\t\v]。
            var result = str.replace(reg, "");
            console.log(result);

            var reg1 = /^\s+|\s+$/g;
            String.prototype.btrim = function () {
                this;
                var reg1 = /^\s+|\s+$/g;
                return this.replace(reg, '');
            }
            str.trim();//给字符串拓展一个方法

            var str4 = 'dfdddddddddddddddddd';
            var reg4 = /d+/g;
            var re = str4.match(reg4);
            console.log(re);
        };
    </script>
</head>
<body>

</body>
</html>

　　

posted @ 2015-07-09 14:58  ICupid  阅读(149)  评论(0)  编辑  收藏  举报