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数组连接

1.一个数组里的元素连接起来

作为新手,我只会最简单的,慢慢积累吧。

方法一:定义新数组,循环读出。

 1 <!doctype html> 2 <html> 3     <head> 4         <meta http-equiv="Content-Type" content="text/html charset=utf-8" /> 5         <meta http-equiv="X-UA-Compatible" content="IE=edge chrome=1" /> 6         <meta name="keyword" content="数组连接" /> 7         <meta name="description" content="数组连接数组连接数组连接数组连接" /> 8         <title>数组连接</title> 9     </head>10     <body>11         <script type="text/javascript">12             var arr=[1,3,5,4,7];13             var str=‘‘;14             for(var i=0;i<arr.length;i++){15                 str+=arr[i];16             }17             console.log(str);//结果:1354718         </script>19     </body>20 </html>

方法二:join(这个还有点技术含量)

 1 <!doctype html> 2 <html> 3     <head> 4         <meta http-equiv="Content-Type" content="text/html charset=utf-8" /> 5         <meta http-equiv="X-UA-Compatible" content="IE=edge chrome=1" /> 6         <meta name="keyword" content="数组连接" /> 7         <meta name="description" content="数组连接数组连接数组连接数组连接" /> 8         <title>数组连接</title> 9     </head>10     <body>11         <script type="text/javascript">12             var arr=[1,3,5,4,7];13             arr=arr.join(‘‘);14             console.log(arr);//结果:1354715         </script>16     </body>17 </html>

2.多个数组连接到一起 concat

 1 <!doctype html> 2 <html> 3     <head> 4         <meta http-equiv="Content-Type" content="text/html charset=utf-8" /> 5         <meta http-equiv="X-UA-Compatible" content="IE=edge chrome=1" /> 6         <meta name="keyword" content="数组连接" /> 7         <meta name="description" content="数组连接数组连接数组连接数组连接" /> 8         <title>数组连接</title> 9     </head>10     <body>11         <script type="text/javascript">12             var arr1=[5,2,1],13                     arr2=[s,i,l,e,n,c,e];14                     arr=[h,i];15                     arr=arr.concat(arr1,arr2);16             console.log(arr);//结果:[‘h‘,‘i‘,5,2,1,‘s‘,‘i‘,‘l‘,‘e‘,‘n‘,‘c‘,‘e‘]17         </script>18     </body>19 </html>

 

水滴石穿中。。。

数组连接