废话不多说了直接给大家贴js代码了，具体代码如下所述：
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
|
<!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> |
（转载）http://www.jb51.net/article/94832.htm
