js delete 用法(删除对象属性及变量)
投稿：whsnow 字体：[增加 减小] 类型：转载 时间：2014-08-24 我要评论
js delete可以删除对象属性及变量，下面是一些示例，感兴趣的朋友可以看看 <iframe id="iframeu2261530_0" src="http://pos.baidu.com/acom?sz=680x200&rdid=2261530&dc=2&di=u2261530&dri=0&dis=0&dai=2&ps=403x49&coa=at%3D3%26rsi0%3D680%26rsi1%3D200%26pat%3D6%26tn%3DbaiduCustNativeAD%26rss1%3D%2523FFFFFF%26conBW%3D1%26adp%3D1%26ptt%3D0%26titFF%3D%2525E5%2525BE%2525AE%2525E8%2525BD%2525AF%2525E9%25259B%252585%2525E9%2525BB%252591%26titFS%3D14%26rss2%3D%2523000000%26titSU%3D0%26ptbg%3D90%26piw%3D0%26pih%3D0%26ptp%3D0&dcb=BAIDU_UNION_define&dtm=BAIDU_DUP_SETJSONADSLOT&dvi=0.0&dci=-1&dpt=none&tsr=0&tpr=1456890024836&ti=js%20delete%20%E7%94%A8%E6%B3%95(%E5%88%A0%E9%99%A4%E5%AF%B9%E8%B1%A1%E5%B1%9E%E6%80%A7%E5%8F%8A%E5%8F%98%E9%87%8F)_javascript%E6%8A%80%E5%B7%A7_%E8%84%9A%E6%9C%AC%E4%B9%8B%E5%AE%B6&ari=1&dbv=2&drs=1&pcs=1088x530&pss=1088x409&cfv=0&cpl=4&chi=1&cce=true&cec=GBK&tlm=1454001624&ltu=http%3A%2F%2Fwww.jb51.net%2Farticle%2F54247.htm&ltr=https%3A%2F%2Fwww.baidu.com%2Flink%3Furl%3DkOOGwK7sxwcvh3ywyQ_8NU1sDxrRIw4jnzwRBdQJSM201EqyHzgxdb9yjbziOqCj%26wd%3D%26eqid%3Df43f1473001738af0000000556d6605d&ecd=1&psr=1366x768&par=1366x728&pis=-1x-1&ccd=24&cja=false&cmi=6&col=zh-CN&cdo=-1&tcn=1456890025&qn=177065c568081c71&tt=1456890024812.75.388.389" width="680" height="200" align="center,center" vspace="0" hspace="0" marginwidth="0" marginheight="0" scrolling="no" frameborder="0" allowtransparency="true" style="display: block; border-width: 0px; border-style: initial; vertical-align: bottom; margin: 0px;"></iframe>1,对象属性删除
?| 1 2 3 4 5 6 7 8 9 10 11 12 13 |
function
fun(){
this.name
= "mm";
}
var
obj = new fun();
console.log(obj.name);//mm
delete
obj.name;
console.log(obj.name);
//undefined
|
2,变量删除
?| 1 2 3 |
var
name = "lily";
delete
name;
console.log(name);
//lily
|
直接用delelte删除不了变量
3,删除不了原型链中的变量
?| 1 2 3 |
fun.prototype.age
= 18;
delete
obj.age;
console.log(obj.age)
//18
|
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