JS 数组元素删除

  <script type="text/javascript">
  	Array.prototype.ayromove = function(dx) {
			if(isNaN(dx)||dx>this.length){return false;}
			this.splice(dx,1);
		}
		var arr = ['a', 'b', 'c'];
		console.log("elements: "+ arr + " nLength: " + arr.length);
		arr.ayromove(1); //删除下标为1的元素
		console.log("elements: "+ arr + " nLength: " + arr.length);
	</script>