JS indexOf函数是一种常用的字符串处理方法,它可以用于判断字符串中是否包含特定的子字符串。它可以返回指定子字符串在原字符串中第一次出现的位置,如果没有找到该子字符串则返回-1。一、JS indexOf函数的语法JS indexOf函数的语法如下:string.indexOf(searchValue[, from
Concatenation is one of the most powerful tools available to computer programmers and anyone who uses digital tools on a regular basis. In a nutshell, concatenation is the process of combining two or more strings of characters into a single, larger string