Posted in Javascript onFebruary 18, 2017
本文实例讲述了JS实现数组去重复值的方法。分享给大家供大家参考,具体如下:
运行效果图如下:
完整实例代码如下:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>Test</title> <script type="text/javascript" language="javascript" > Array.prototype.distinct = function(){ var $ = this; var o1 = {}; //存放去重复值 var o2 = {}; //存放重复值 var o3 = []; //存放重复值 var o; //数组单个变量 for(var i=0;o = $[i];i++){ if(o in o1){ if(!(o in o2)) o2[o] = o; delete $[i]; }else{ o1[o] = o; } } $.length = 0; //清空原数组 for(o in o1){ $.push(o); } for(o in o2){ o3.push(o); } return o3; } var a = [2,2,2,3,3,3,4,4,5,6,7,7]; console.log("原数组:" + a); //2,2,2,3,3,3,4,4,5,6,7,7 console.log("有重复的元素是:" + a.distinct()); //2,3,4,7 console.log("整理后的数组是:" + a); //2,3,4,5,6,7 console.log("整理后的长度是:" + a.length) //6 </script> </head> <body> </body> </html>
JS实现数组去重复值的方法示例
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