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99cheng.html
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<!DOCTYPE html>
<html lang="zh-CN">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<script src="http://cdn3.ttce.cn/ttce_plugins/jquery-1.10.2.min.js"></script>
<link href="https://cdn.bootcss.com/twitter-bootstrap/4.2.1/css/bootstrap.css" rel="stylesheet">
<style>
*{margin: 0;padding: 0;}
.container-fluid{
margin-top: 10px;
}
.cntinput{width: 60px; height:30px;text-align: center; border: 1px solid #111; font-size: 22px;}
span{width: 30px;display: inline-block;margin: 10px;text-align: center}
input::-webkit-outer-spin-button,
input::-webkit-inner-spin-button {
-webkit-appearance: none;
}
input[type="number"] {
-moz-appearance: textfield;
}
</style>
</head>
<body>
<div class="container-fluid">
<select id="type">
<option value="-1">随机</option>
<option value="0">乘法</option>
<option value="1">除法</option>
</select>
数量：
<input type="number" id="cnt" class="cntinput" value="10" />
<button id="gen" onclick="gen()" type="button" class="btn btn-primary">生成</button>
</div>
<div id="content">
</div>
<script>
function rnd(min,max){
return Math.floor(Math.random() * (max - min + 1) + min)
}
function rndOne(type){
var num1=rnd(1,9);
var num2=rnd(1,9);
var r=num1 * num2;
if(type!=0 && type!=1){
type=rnd(0,1)==1;
}
var result={};
result.number1=type==0?num1:r;
result.number2=num2;
result.result=type==0?r:num1;
result.type=type;
return result;
}
function gen(){
$("#content").empty();
var type=$("#type").val();
var cnt=$("#cnt").val();
for(var i=0;i<cnt;i++){
var r=rndOne(type);
showOne(r);
//console.log(r.number1 + (r.type==0?"×":"÷") +r.number2+"="+r.result );
}
}
function showOne(r){
var div=$("<div />");
div.append("<span>"+r.number1+"</span>");
div.append("<span>"+(r.type==0?"×":"÷")+"</span>");
div.append("<span>"+r.number2+"</span>");
div.append("<span>=</span>");
$("#content").append(div);
}
</script>
</body>
</html>