JS 删除字符串最后一个字符

js 删除字符串最后一个字符

// 原字符串
const str = "1,2,3,4,5,"

// 想要的结果 "1,2,3,4,5"

一、JavaScript slice() 方法

const str = "1,2,3,4,5,";
console.log(str.slice(0, -1)); // "1,2,3,4,5"

二、JavaScript substr() 方法

const str = "1,2,3,4,5,";
console.log(str.substr(0, str.length-1)); // "1,2,3,4,5"

三、JavaScript substring() 方法

const str = "1,2,3,4,5,";
console.log(str.substring(0, str.length-1)); // "1,2,3,4,5"

四、JavaScript replace() 方法

const str = "1,2,3,4,5,";
const reg = /,$/gi;
console.log(str.replace(reg, "")); // "1,2,3,4,5"