JS实现数组删除指定元素功能示例

时间:2020-05-17 longzhoufeng 人气:0

本文实例讲述了JS实现数组删除指定元素功能。分享给大家供大家参考，具体如下：

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>www.qb5200.com JS数组删除指定元素</title>
</head>
<body>
<script>
  var array = ["111", "222", "333", "444", "555", "666"];
  var indexList = [0, 5, 6];
  var indexList1 = [5];
  Array.prototype.del = function(indexList) {
    function isValidate(number) {
      if(isNaN(number) && number > this.length) {
        return false;
      }
    }
    if(indexList instanceof Array) {
      indexList.sort(function(x, y) {
        if(x > y) {
          return 1;
        } else {
          return -1;
        }
      });
      var lastIndex = indexList[indexList.length - 1];
      isValidate(lastIndex);
      for(var i = 0; i < indexList.length; i++) {
        var n = i;
        if(n > 0) {
          indexList[i] = indexList[i] - n;
        }
        this.splice(indexList[i], 1);
        n++;
      }
    } else {
      isValidate(indexList);
      this.splice(indexList, 1);
    }
  }
  console.log("before delete: " + array);
  array.del(indexList1);
  console.log("after delete: " + array);
</script>
</body>
</html>

运行结果：

希望本文所述对大家JavaScript程序设计有所帮助。

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