sort同Array.sort。

<dom-module id="employee-search"><template><input value="{{searchString::input}}"><template is="dom-repeat" items="{{employees}}" as="employee"filter="{{computeFilter(searchString)}}" index-as="e_num"><div>{{e_num}}, {{employee.lastname}}, {{employee.firstname}}</div></template></template><script>Polymer({is: "employee-search",computeFilter: function(string) {if (!string) {// set filter to null to disable filteringreturn null;} else {// return a filter function for the current search stringstring = string.toLowerCase();return function(employee) {var first = employee.firstname.toLowerCase();var last = employee.lastname.toLowerCase();return (first.indexOf(string) != -1 ||last.indexOf(string) != -1);};}},properties: {employees: {type: Array,value: function() {return [{ firstname: "Jack", lastname: "Aubrey" },{ firstname: "Anne", lastname: "Elliot" },{ firstname: "Stephen", lastname: "Maturin" },{ firstname: "Emma", lastname: "Woodhouse" }]}}}});</script>
</dom-module>