常用js

  function CheckCode(s) {
            var pattern = new RegExp("[`~!@#$^&*()=|{}':;',\[\].<>/?~！@#￥……&*（）&;—|{}【】‘；：”“'。，、？]")
            var rs = "";
            for (var i = 0; i < s.length; i++) {
            rs = rs + s.substr(i, 1).replace(pattern, '');
            }
            return rs;
            }

$(this).val(/d+/.exec($(this).parent().attr("title"))[0]);

<script type="text/javascript">
    var testjs = { "www": null };
    O2String(testjs);
   function O2String(O) {
        //return JSON.stringify(jsonobj);

        var S = [];
        var J = "";
        if (Object.prototype.toString.apply(O) === '[object Array]') {
            for (var i = 0; i < O.length; i++)
                S.push(O2String(O[i]));
            J = '[' + S.join(',') + ']';
        }
        else if (Object.prototype.toString.apply(O) === '[object Date]') {
            J = "new Date(" + O.getTime() + ")";
        }
        else if (Object.prototype.toString.apply(O) === '[object RegExp]' || Object.prototype.toString.apply(O) === '[object Function]') {
            J = O.toString();
        }
        else if (Object.prototype.toString.apply(O) === '[object Object]') {
            for (var i in O) {
                O[i] = typeof (O[i]) == 'string' ? '"' + O[i] + '"' : (typeof (O[i]) === 'object' ? O2String(O[i]) : O[i]);
                S.push('"' + i + '":' + O[i]);
            }
            J = '{' + S.join(',') + '}';
        }
        else if (Object.prototype.toString.apply(O) === '[object Null]') {
           
        }
        return J;
    };
</script>

var test = function (O) {
        //return JSON.stringify(jsonobj);

        var S = [];
        var J = "";
        if (Object.prototype.toString.apply(O) === '[object Array]') {
            for (var i = 0; i < O.length; i++)
                S.push(O2String(O[i]));
            J = '[' + S.join(',') + ']';
        }
        else if (Object.prototype.toString.apply(O) === '[object Date]') {
            J = "new Date(" + O.getTime() + ")";
        }
        else if (Object.prototype.toString.apply(O) === '[object RegExp]' || Object.prototype.toString.apply(O) === '[object Function]') {
            J = O.toString();
        }
        else if (Object.prototype.toString.apply(O) === '[object Object]') {
            for (var i in O) {
                O[i] = typeof (O[i]) == 'string' ? '"' + O[i] + '"' : (typeof (O[i]) === 'object' && O[i] != null)? O2String(O[i]) : O[i];
                S.push('"' + i + '":' + O[i]);
            }
            J = '{' + S.join(',') + '}';
        }

        return J;
    };