这篇文章主要介绍了JavaScript删除数组元素的方法,实例分析了javascript中delete函数的使用技巧,具有一定参考借鉴价值,需要的朋友可以参考下：

JS中可以通过delete删除数组元素，但是删除后数组的大小不会改变:

<script type="text/javascript">
 <!--
 var days = ["Sunday","Monday","Tuesday","Wednesday", 
  "Thursday","Friday","Saturday"]; 
document.write("Number of days:"+days.length);
   delete days[4]; document.write("<br />Number of days:"+days.length);
 //-->
 </script> 

输出结果：

Number of days:7
Number of days:7