思路:擷取輸入框中輸入的值使用随機函數 var input1=document.getElementById(“shuru”).value;使用随機函數random擷取随機數,将這兩個數使用if語句進行對比,consol.log背景列印猜數的結果
實作界面
![](https://img.laitimes.com/img/_0nNw4CM6IyYiwiM6ICdiwiIwczX0xiRGZkRGZ0Xy9GbvNGL2EzXlpXazxSP9EFZwQWbihmVIFmek1mYwx2MMBjVtJWd0ckW65UbM5WOHJWa5kHT20ESjBjUIF2X0hXZ0xCMx81dvRWYoNHLrdEZwZ1Rh5WNXp1bwNjW1ZUba9VZwlHdssmch1mclRXY39CXldWYtlWPzNXZj9mcw1ycz9WL49zZuBnL1ETY4IDZ1YjN2YmN2ADNiRDNmRDMiN2M3QTMlNWMxUzLc52YucWbp5GZzNmLn9Gbi1yZtl2Lc9CX6MHc0RHaiojIsJye.png)
一、代碼
html代碼
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<link rel="stylesheet" href="caijiang.css">
<style>
</style>
</head>
<body>
<div class="all">
<div><img id="img1" src="bg.jpg" alt=""></div>
<div class="left">
<input type="text" id="shuru" name="shuru">
<input type="button" id="btn">
</div>
<div class="right">
</div>
</div>
<script>
var btn1=document.getElementById("btn");
var n=Math.round(Math.random()*10);
btn1.onclick=function(){
var input1=document.getElementById("shuru").value;
//判斷随機數是否符合input中的值
//擷取随機數
//random擷取的随機數為0~1的小數,需要進行轉化
//round四舍五入
console.log(n);
console.log(input1);
if(input1> n){
console.log("你猜大了哦!!");
}else if(input1== n){
console.log("你猜對了哦!!");
}else{
console.log("你猜小了哦!!");
}
}
</script>
</body>
</html>
css代碼
body{
position: relative;
}
#img1{position: absolute;top:0;left:0;
width: 100%;height:auto;z-index: -100;
}
.left{position: relative;top:200px;left:8%;
width: 600px;height: 456px;background: url("main.png");
background-size:cover;
}
.left #shuru{font-size: 25px;color:#000;padding-left:20px;
position: absolute;top: 239px;left: 118px;
width: 353px;height: 50px;border:1px solid green;outline: none;border-radius: 5px;
}
.left #btn{
position: absolute;top: 319px;left: 261px;
width: 82px;height: 82px;border-radius: 50%;
background: url("button.png");background-size:82px 82px ; outline: none;
}
.right{position: absolute;top: 319px;right: 28%;
width: 200px;height: 230px;background: url("win.png");background-size: 200px auto;
}
圖檔
javascript猜數字遊戲,随機數猜數字實作界面一、代碼總結
總結
使用随即函數random擷取随機數,擷取到的随機數為0-1的小數,是以乘以10,得到1-10的随機數,Math.round将小數四舍五入取整,取整也可以使用parseInt