1 <!DOCTYPE HTML>
2 <html>
3 <head>
4 <meta charset="UTF-8" />
5 <title>比较两个字符串相同的个数,并输出</title>
6 <script src="jquery-1.12.4.min.js"></script>
7 <script type="text/javascript">
8 var str1 = "istaerriter";
9 var str2 = "ostaretttr";
10 var len = str1.length > str2.length ? str1.length : str2.length;
11 for(var i=0,newstr=[],num = 0;i<len;i++){
12 if(str1[i] == str2[i]){
13 newstr.push(str1[i]);
14 }else{
15 newstr.push('/');
16 }
17 }
18 var arr = newstr.join("").toString().split('/');
19 for(var i=0,num=0,newarr=[];i<arr.length;i++){
20 num = num > arr[i].length ? num : arr[i].length;
21 newarr = newarr.length < arr[i].length ? arr[i] : newarr;
22 }
23 console.log(arr,num,newarr);
24 var temp = 0;
//section2
25 function finder(str1, str2, start, len){
26 if (null == start){
27 start = -1;
28 //保证str1是两者中较短的一个
29 var str1 = str1.length <= str2.length ? str1 : str2;
30 var str2 = str1.length > str2.length ? str1 : str2;
31 }
32 start++;
33 if (!len) {
34 len = str1.length;//较短字符串的长度
35 }
36 var end = start + len;
37 if (end > str1.length) {
38 if (len == 1){
39 return 0;
40 }
41 return finder (str1, str2, -1, --len);
42 }
43 console.log(start,end,len)
44 temp = str1.substring (start, end);
45 console.log(temp)
46 if (str2.indexOf (temp) != -1) {
47 return temp.length +' / '+temp;
48 }
49 return finder (str1, str2, start, len);
50 }
51 var len = finder ("souhu.com", "blog.souhu");
52 console.debug(len);
53 </script>
54 </head>
55 </html>
