javascriptの中のcallとappy
547 ワード
javacript , :
<script>
function a()
{
alert(this);
}
a();
a.call();//
</script>
this , window.a.call(); this window, :a.call("lan"); this lan, , a(); this , call , this 。 apply , a.apply("lan",[1,"hc"]); , call a.call("lan",1,"hc");