一.charAt(index) 返回一个字符串某一个索引的字符. 语法:str.charAt(index); var str='我是中国人'; console.log(str.charAt(3));//输出"国",索引号从0开始,传入数字3,就是获取索引为3的字符 二.indexOf("str") 获取某个字符第一次在字符串上的索引号,找不到当前字符的输出-1; 语法:str.indexOf("str") ; var str='我是中国人'; c
这篇随笔根据两个面试题来实战一下数组.字符串的一些方法. 题一:一个字符串中找出出现次数最多的字符次数 var str = 'fuuhuhuhufaihuhfnkjNKCNIO'; function num(str) { var json = {}; for (var i = 0; i < str.length; i++){ //字符串的charAt()方法返回指定位置的字符串 if(!json[str.charAt(i)]){//若json对象中没有当前属性,则给当前属性赋值为1 json[
API文档charAt(int index)是这样定义的: charAt(char index):Returns the char value at the specified index.在指定的索引返回字符的值: 示例 使用charAt函数获取字符串strCom中索引值为4的char值,并将结果赋值给int变量strLower: String strCom = "I like you"; int strLower = strCo
Cow Exhibition Time Limit: 1000MS Memory Limit: 65536K Total Submissions: 10200 Accepted: 3977 Description "Fat and docile, big and dumb, they look so stupid, they aren't much fun..." - Cows with Guns by Dana Lyons The cows want to prove to
Description "Fat and docile, big and dumb, they look so stupid, they aren't much fun..." - Cows with Guns by Dana Lyons The cows want to prove to the public that they are both smart and fun. In order to do this, Bessie has organized an exhibitio