棋盘

先做棋盘，点击出现

<!DOCTYPE HTML>
<html>
        <head>
        	<meta charset="utf-8">
      	<style>
		.sty1{background-color:#aaa;height:450px;width:450px;margin-top:20px;float:left;margin-left:10px;}
		.sty2{background-color:#999;height:50px;width:50px;;float:left;}
		.sty3{background-color:#bbb;height:50px;width:50px;;float:left;}
	</style>
        </head>
        <body>
     	<div id = "div1" class = "sty1" onclick = "m1()" ></div>

         </body>
         <script>
	function m1(){
		var x = document.getElementById("div1");
	
		var html = ' ';
			
		for (var i = 0; i < 81; i++){
			if (i % 2 == 1){
				html += '<div class = "sty2"></div>';
			}else{
				html += '<div class = "sty3"></div>';
			}
		}
		x.innerHTML = html;

		
	}
         </script>

    </html>

在这里插入图片描述

给每个小格子加上不同的id

			if (i % 2 == 1){
				html += '<div id = "div_' + i +'"class = "sty2" onclick = "m2()"></div>';
			}else{
				html += '<div id = "div_' + i +'"class = "sty3" οnclick= "m2()"></div>';
			}

注意引号的对应关系。
在这里插入图片描述

加上不同的参数传入

			if (i % 2 == 1){
				html += '<div id = "div_' + i +'"class = "sty2" onclick = "m2(' + i  +')"></div>';
			}else{
				html += '<div id = "div_' + i +'"class = "sty3" οnclick= "m2( ' + i +')"></div>';
			}

我们设置小格子的点击触发事件

注意先把棋盘的点击效果转移到按钮上，不然点不到小格子的。

<!DOCTYPE HTML>
<html>
        <head>
        	<meta charset="utf-8">
      	<style>
		.sty1{background-color:#aaa;height:450px;width:450px;margin-top:20px;float:left;margin-left:10px;}
		.sty2{background-color:#999;height:50px;width:50px;;float:left;}
		.sty3{background-color:#bbb;height:50px;width:50px;;float:left;}
	</style>
        </head>
        <body>
     	<div id = "div1" class = "sty1" ></div>
		<input type = "button" value = "点击" onclick = "m1()">
         </body>
         <script>
	function m1(){
		var x = document.getElementById("div1");
	
		var html = ' ';
			
		for (var i = 0; i < 81; i++){
			if (i % 2 == 1){
				html += '<div id = "div_' + i +'"class = "sty2" onclick = "m2( '+ i +')"></div>';
			}else{
				html += '<div id = "div_' + i +'"class = "sty3" οnclick= "m2( ' + i +')"></div>';
			}
		}
		x.innerHTML = html;	
	}
		function m2(x){
			var k1 = "div_" + x;
			var k2 = document.getElementById(k1);
			k2.style.backgroundColor = "#2ac";
		}
         </script>

    </html>

在这里插入图片描述

循环填充元素

<!DOCTYPE HTML>
<html>
        <head>
        	<meta charset="utf-8">
      	<style>
		.sty1{background-color:#aaa;height:450px;width:450px;margin-top:20px;float:left;margin-left:10px;}
		.sty2{background-color:#999;height:50px;width:50px;;float:left;}
		.sty3{background-color:#bbb;height:50px;width:50px;;float:left;}
		.sty4{background-color:#bbb;height:600px;width:100%;float:left;}
		.sty5{background-color:#2ac;height:200px;width:120px;float:left;margin-left:10px;margin-top:10px;border-radius:10px;}		
	</style>
        </head>`
        <body>
     	<div id = "div1" class = "sty1" ></div>
	<div id = "div2" class = "sty4"></div>
	<input type = "button" value = "点击" onclick = "m1()">
         </body>
         <script>
	function m1(){
		var x = document.getElementById("div1");
	
		var html = ' ';
			
		for (var i = 0; i < 81; i++){
			if (i % 2 == 1){
				html += '<div id = "div_' + i +'"class = "sty2" onclick = "m2( '+ i +')"></div>';
			}else{
				html += '<div id = "div_' + i +'"class = "sty3" οnclick= "m2( ' + i +')"></div>';
			}
		}
		x.innerHTML = html;
		m3();	
	}
		function m2(x){
			var k1 = "div_" + x;
			var k2 = document.getElementById(k1);
			k2.style.backgroundColor = "#2ac";
		}
		function m3(){
			var x = document.getElementById("div2");
			var html = ' ';
			for (var i = 0; i < 20; i ++){
				html += '<div id = "div_' + i +'"class = "sty5" ></div>';
			}
			div2.innerHTML = html;
		}
				
         </script>

    </html>