easyui datagrid datagrid-filter bug

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问题描述：空字符串、数字过滤过滤异常

修改js源码：

 $.fn.datagrid.defaults.operators = {

        nofilter: {

            text: 'No Filter'

        },

        contains: {

            text: 'Contains',

            isMatch: function (source, value) {

                return source.toString().toLowerCase().indexOf(value.toLowerCase()) >= ;// modfy by 253

            }

        },

........

   function isMatch(row) {

            var rules = opts.filterRules;

            for (var i = ; i < rules.length; i++) {

                var rule = rules[i];

                var source = row[rule.field];

                if (source || source == "" || typeof ( source)=="number ") {// modfy by 253

                    var op = opts.operators[rule.op];

                    if (!op.isMatch(source, rule.value)) {

                        return false;

                    }

                }

            }

            return true;

        }

....

摘自：http://my.oschina.net/gofan/blog/208535