How to remove duplicate elements from an array in javascript [Example]_javascript skills

In practical applications, we may often need to remove duplicate elements in an array. The following is the implementation of the JavaScript array deduplication method:

<script language="javascript">
<!--
	/*判断数组中是否存在某个元素的方法*/
	function isExistInArr(_array, _element){
		if(!_array || !_element) return false;
		if(!_array.length){
			return (_array == _element);
		}
		for(var i=0; i<_array.length; i++){
			if(_element == _array[i]) return true;
		}
		return false;
	}

	/*去除数组中重复元素的方法*/
	function distinct(_array){
		if(!_array || !_array.length) return _array;
		var newArray = new Array();
		for(var i=0; i<_array.length; i++){
			var oEl = _array[i];
			if(!oEl || this.isExistInArr(newArray, oEl)) continue;
			newArray[newArray.length] = oEl;
		}
		return newArray;
	}
	var origArr = [1,2,3,4,1,4,1,3];
	origArr = distinct(origArr);
	alert(origArr);
//-->
</script>

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