RegExp 的若干问题

Instead of using the /regex/g syntax, you can construct a new RegExp object:

var re = new RegExp("regex","g");

You can dynamically create regex objects this way. Then you will do:

"mystring".replace(re, "newstring");

    jQuery.validator.addMethod(
            "regex",
            function(value, element, regexp) {
                var re = new RegExp(regexp,"g");
                return this.optional(element) || re.test(value);
            },
            "Please check your input."
    );

will return true or false