如何将两个符号之间的字符串的一部分复制到javascript中的另一个字符串中？ 帮我…

Question

var var1="hi (help) me"; 

I want to copy the letters between () into a new variable var2 . That is, the word 'help'. Am new in Javascript.

Answer 1

you can use substring() and indexOf() to extract the text between parenthesis .

Live Demo

var var2 = var1.substring(var1.indexOf('(')+1, var1.indexOf(')'))

Answer 2

Slice() method can be used to extract or copy a part of a string into a new string leaving the original string as it is. Here is how you can use it:

Code:

 var var1="hi (help) me"; var var2 = var1.slice(4,8); console.log(var2);