下面这个示例在输入框键入回车键或者点击按钮时，将输入框的值置为"Hello World!"：（黄色背景内容为响应回车事件涉及到的代码） <html ng-app="myApp"> <head><meta charset="utf-8"><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /><meta name="viewport" content="initial-scale=1, maximum-scale=1, user-scalable=no, width=device-width"> <title>angularjs-demo</title> <script type="text/javascr...