时间:2021-07-01 10:21:17 帮助过:8人阅读
数组去重:
<!DCOTYPE> <html> <head> <title>数组去重</title> <script> function test(str){ let len = str.length; let strtmp = []; for(let i = 0;i<len;i++){ if (strtmp.indexOf(str[i])< 1){ strtmp.push(str[i]); } } console.log(strtmp); } let abc = [0,2,3,5,2,1,9,3,9,1]; test(abc); </script> </head> <body> </body> </html>
查找字符串出现最多的:
<!DCOTYPE> <html> <head> <title>1111</title> <script src="http://code.jquery.com/jquery-3.3.1.min.js" integrity="sha256-FgpCb/KJQlLNfOu91ta32o/NMZxltwRo8QtmkMRdAu8=" crossorigin="anonymous"></script> <script> $(function(){ $('.btn').click(function(){ let num = $('.num').val(); // console.log(num); let len = num.length; let json = {}; for (let i=0;i<len;i++){ if(!json[num.charAt(i)]){ json[num.charAt(i)]=1; }else { json[num.charAt(i)]++; } } let max = 0; let word = ''; for(var i in json){ if (json[i]> max){ max = json [i]; word = i; } } console.log('the word is'+word,'count is'+max); }) }) </script> </head> <body> <label>awqewqewqewqe</label><input type="text" class="num"></input> <button class="btn" >22222</button> </body> </html>
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