~SingleForum~无废话记录~ Topic: JS Array 操作~删除数组中某项 http://www.ll19.com/bb/ ~19~记录点有用的好吗？少说废话少装b~ en Tue, 07 Feb 2012 08:53:08 +0000 admin on "JS Array 操作~删除数组中某项" http://www.ll19.com/bb/topic/68#post-68 Tue, 14 Apr 2009 03:15:27 +0000 admin 68@http://www.ll19.com/bb/ <p>JS Array 操作~删除数组中某项</p> <p>
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  1. &#60;/p&#62;
  2. &#60;p&#62;Array.prototype.del = function(n) {&#60;br /&#62;
  3.     //n表示第几项，从0开始算起。&#60;br /&#62;
  4.     if (n &#38;lt; 0)&#60;br /&#62;
  5.         return this;&#60;br /&#62;
  6.     else&#60;br /&#62;
  7.         return this.slice(0, n).concat(this.slice(n + 1, this.length));&#60;br /&#62;
  8. }&#60;/p&#62;
  9. &#60;p&#62;var test = new Array(0, 1, 2, 3, 4, 5);&#60;br /&#62;
  10. test = test.del(3); //从0算起，这里也就是删除第4项。&#60;br /&#62;
  11. alert(test);&#60;/p&#62;
  12. &#60;p&#62;

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