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：13547 18 </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：13547 15 </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。。。