摘要：
<!DOCTYPE html> <html lang="en"> <head> <title>双向绑定</title> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1" 阅读全文
摘要：
1 var Event = { 2 on: function (eventName, callback) { 3 console.log("eventName:"+eventName) 4 if (!this.handles) { 5 Object.... 阅读全文