越是学习就感觉自己知道的东西越来越少,这是一个必然的过程,再次将知识综合回顾一下.
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>TESTJAVASCRIPT</title> </head> <body> <script type="text/javascript"> //var myData=new Object(); //定义对象 var myData={ name:'Jeccy', sunny:'suny', printMessages:function(){ document.writeln("Hello "+myData.name+"."+'Today is '+this.weather+'.'); } } //增加属性 myData.dayOfWeek='sunday'; myData.sayHello=function(){ document.writeln("Hello"); } //删除属性 delete myData.name; //遍历对象属性 for(var prop in myData){ document.writeln("Name:"+prop+" Value:"+myData[prop]+'<p />'); } //判断对象是否存在某属性 var hasName='name' in myData; document.writeln("Hasname:"+hasName); </script> </body> </html>效果如下:
注:遍历中用<p />换行是我的浏览器写writeln不自动换行.
