replace

//去掉html标签 function removeHtmlTab(tab) { return tab.replace(/<[^<>]+?>/g,'');//删除所有HTML标签 } //普通字符转换成转意符 function html2Escape(sHtml) { return sHtml.replace(/[<>&"]/g,function(c){return {'<':'<','>':'>','&':'&','"':'"'}[c];}); } //转意符换成普通字符 function escape2Html(str) { var arrEntities={'lt':'<','gt':'>','nbsp':' ','amp':'&','quot':'"'}; return str.replace(/&(lt|gt|nbsp|amp|quot);/ig,function(all,t){return arrEntities[t];}); } //  转成空格 function nbsp2Space(str) { var arrEntities = {'nbsp' : ' '}; return str.replace(/&(nbsp);/ig, function(all, t){return arrEntities[t]}) } //回车转为br标签 function

题目 Given an array arr, replace every element in that array with the greatest element among the elements to its right, and replace the last element with -1. After doing so, return the array. Example 1: Input: arr = [17,18,5,4,6,1] Output: [18,6,6,6,1,-1] Constraints: 1 <= arr.length <= 10^4 1 <= arr[i] <= 10^5 分析 题意： 遍历数组，将当前数字替换成右侧最大的一个数字 最后将末尾的一个数字替换为-1 i=0 17 18 5 4 6 1 ⇒ 18 18 5 4 6 1 i=1 18 18 5 4 6 1 ⇒ 18 6 5 4 6 1 i=2 18 6 5 4 6 1 ⇒ 18 6 6 4 6 1 i=3 18 6 6 4 6 1 ⇒ 18 6 6 6 6 1 i=4 18 6 6 6 6 1 ⇒ 18 6 6 6 6 1 i=5 18 6 6 6 6 1 ⇒ 18 6 6 6 6 -1 难点： 拿到每个数字时，还得找出其后的最大数，遍历自然能够解决，但是复杂度太高。

To some string S , we will perform some replacement operations that replace groups of letters with new ones (not necessarily the same size). Each replacement operation has 3 parameters : a starting index i , a source word x and a target word y . The rule is that if x starts at position i in the original string S , then we will replace that occurrence of x with y . If not, we do nothing. For example, if we have S = "abcd" and we have some replacement operation i = 2, x = "cd", y = "ffff" , then because "cd" starts at position 2 in the original string S , we will replace it with "ffff" . Using

Find And Replace in String To some string S , we will perform some replacement operations that replace groups of letters with new ones (not necessarily the same size). Each replacement operation has 3 parameters: a starting index i , a source word x and a target word y . The rule is that if x starts at position i in the original string S , then we will replace that occurrence of x with y . If not, we do nothing. For example, if we have S = "abcd" and we have some replacement operation i = 2, x = "cd", y = "ffff" , then because "cd" starts at position 2 in the original string S , we will

To some string S, we will perform some replacement operations that replace groups of letters with new ones (not necessarily the same size). Each replacement operation has 3 parameters: a starting index i, a source word x and a target word y. The rule is that if x starts at position i in the original string S, then we will replace that occurrence of x with y. If not, we do nothing. For example, if we have S = "abcd" and we have some replacement operation i = 2, x = "cd", y = "ffff", then because "cd" starts at position 2 in the original string S, we will replace it with "ffff". Using another

利用正则式实现首字母大写，丧心病狂是不是？好好的substr不用. JavaScript replace() 方法 r = /^(.)(?=.*)/; str = 'abc'; var str2 = str.replace(r, function (mstr) { return mstr.toUpperCase(); }) console.log(str2) // Abc 来源： https://www.cnblogs.com/wancy86/p/6994432.html