Implementing method of removing array repeating elements in JavaScript "instance" _javascript tips

In practical applications, we may need to remove repeating elements from the array in many cases, and the following is the method implementation of the JavaScript array to weight:

<script language= "JavaScript" >
<!--
	/* methods to determine if an element exists in an array
	/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;
	}

	/* Remove duplicate elements from array * *
	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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