js字典操作
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<!DOCTYPE html> <html xmlns="http://www.w3.org/1999/xhtml"> <head runat="server"> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>javascript字典数据结构Dictionary实现</title> <script src="JS/jquery-easyui-1.5/jquery.min.js"></script> <script> function Dictionary() { var items = {}; this.has = function (key) { return key in items; }; this.set = function (key, value) { items[key] = value; }; this.remove = function (key) { if (this.has(key)) { delete items[key]; return true; } return false; }; this.get = function (key) { return this.has(key) ? items[key] : undefined; }; this.values = function () { var values = []; for (var k in items) { if (this.has(k)) { values.push(items[k]); } } return values; }; this.clear = function () { items = {}; }; this.size = function () { var count = 0; for (var prop in items) { if (items.hasOwnProperty(prop)) { ++count; } } return count; }; this.getItems = function () { return items; }; } var dictionary = new Dictionary(); dictionary.set(‘Gandalf‘, ‘[email protected]‘); dictionary.set(‘John‘, ‘[email protected]‘); dictionary.set(‘Tyrion‘, ‘[email protected]‘); console.log(dictionary.has(‘Gandalf‘)); console.log(dictionary.size()); //console.log(dictionary.keys()); console.log(dictionary.values()); console.log(dictionary.get(‘Tyrion‘)); dictionary.remove(‘John‘); console.log(dictionary.values()); console.log(dictionary.get(‘Tyrion‘)); </script> </head> <body> <form id="form1" runat="server"> <div> </div> </form> </body> </html>
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