<!doctype html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>测试页面</title>
<script type="text/javascript" src="jquery.js"></script>
<script type="text/javascript" src="js/List.js"></script>
<script type="text/javascript" src="js/map.js"></script>
</head>
<body>
<script>
$(document).ready(function(){
var m = new Map();
if(m.hasOwnProperty('remove')){
alert("成功!");
}
})
$().ready(function(){
})
$(function(){
var g = new game();
document.writeln( "Test String".hasOwnProperty("split")); //false, 因为不能检测原型链中的属性
document.writeln( String.prototype.hasOwnProperty("split")); //true,String对象的原型上本来就有这个属性,自然返回true
document.writeln(({fnTest:function(){}}).hasOwnProperty("fnTest")); //true,因为不是检测原型中的属性
document.writeln(new game().hasOwnProperty("gameId"));//true
document.writeln(new game().hasOwnProperty("method"));//true
})
function game(gameId,homeName,awayName,gameTime,method){
this.gameId = gameId;
this.homeName = homeName;
this.awayName = awayName;
this.gameTime = gameTime;
this.method = function(){alert("game函数里的方法属性")};
}
</script>
</body>
</html>
js中判断一个Object(包括function)有没有某个属性或者方法——hasOwnProperty()
本文转载:CSDN博客