请为JavaScript每个Array对象添加一个类似于PHP的shuffle()的方法。
1 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> 2 <html xmlns="http://www.w3.org/1999/xhtml"> 3 <head> 4 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> 5 <script type="text/javascript"> 6 //请为JavaScript每个Array对象添加一个类似于PHP的shuffle()的方法。 7 if(!Array.prototype.shuffle){ 8 Array.prototype.shuffle = function(){ 9 this.sort(function(a,b){ 10 var ran = Math.random(); 11 return ran > 0.5 ? 1:-1; 12 }); 13 return this; 14 } 15 } 16 window.onload = function(){ 17 var array = [1,2,3,4,5,6,7,8,9]; 18 alert(array.shuffle()); 19 } 20 21 </script> 22 </head> 23 24 <body> 25 </body> 26 </html>