How to get random colors using jQuery-JS Tutorial-php.cn

How to get random colors using jQuery

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Release： 2018-05-28 14:30:29

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This time I will show you how to use jQuery to obtain random colors, and what are the precautions for using jQuery to obtain random colors. The following is a practical case, let's take a look.

1.js

//获取十六进制颜色 
  function randomColor1(){ 
   var r = Math.floor(Math.random()*256); 
   var g = Math.floor(Math.random()*256); 
   var b = Math.floor(Math.random()*256); 
   if(r < 16){ 
    r = "0"+r.toString(16); 
   }else{ 
    r = r.toString(16); 
   } 
   if(g < 16){ 
    g = "0"+g.toString(16); 
   }else{ 
    g = g.toString(16); 
   } 
   if(b < 16){ 
    b = "0"+b.toString(16); 
   }else{ 
    b = b.toString(16); 
   } 
   return "#"+r+g+b; 
  } 
  $("h3").css("color",randomColor1());

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2.html

Get any color< /h3> Effect:

##The following is a piece of code about several ways to generate random colors in js

<!DOCTYPE html>
<html>
<head lang="en">
 <meta charset="UTF-8">
 <title></title>
</head>
<body>
  <button id="btn1">调用第一种</button>
  <button id="bnt2">调用第二种</button>
  <button id="btn3">调用第三种</button>
  <script>
   var btn1=document.getElementById('btn1');
   btn1.onclick=function(){
    document.body.style.background=bg1()
   };
   var btn2=document.getElementById('bnt2');
   btn2.onclick=function(){
    document.body.style.background=bg2();
   };
   var btn3=document.getElementById('btn3');
   btn3.onclick=function(){
    document.body.style.background=bg3();
   };
   function bg1(){
    return '#'+Math.floor(Math.random()*256).toString(10);
   }
   function bg2(){
    return '#'+Math.floor(Math.random()*0xffffff).toString(16);
   }
   function bg3(){
    var r=Math.floor(Math.random()*256);
    var g=Math.floor(Math.random()*256);
    var b=Math.floor(Math.random()*256);
    return "rgb("+r+','+g+','+b+")";//所有方法的拼接都可以用ES6新特性`其他字符串{$变量名}`替换
   }
  </script>
</body>
</html>

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I believe you have mastered the method after reading the case in this article. For more exciting information, please pay attention to other related articles on the php Chinese website!