独立计数器

最新推荐文章于 2025-12-23 22:21:31 发布

原创最新推荐文章于 2025-12-23 22:21:31 发布 · 217 阅读

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<body>
	<input type="button" value="0"/>
	<input type="button" value="0"/>
	<input type="button" value="0"/>
	<script>
	var aBtn = document.getElementsByTagName("input");
	var arr = ["A","B","C","D"];
	/*for(var i=0;i<aBtn.length;i++){
	aBtn[i].onclick = function (){
	this.value++;
	//this.value += 1
	//this.value = this.value + 1
	}
	}*/
	for(var i=0;i<aBtn.length;i++){
	aBtn[i].j = 0;
	aBtn[i].onclick = function (){
	this.value = arr[this.j++%4];
	}
	}
	</script>
	</body>