如何获取特殊字符前的子字符串？

Question

Below code is giving me expected result "1524587" but right side could be -0 , -1 etc , so how to grab left side string before - ? my 2nd option is not returning the left string

main.js

const str = "1524587-0";
// 1st option 
const rxNumber = element.str .replace('-0', '');

// 2nd Option 
const  splitstring = str.split('-')

Answer 1

You can split using using the character - and then getting the first array value of the result :

 var str = "1524587-0".split('-'); console.log(str[0]); 

Using the same logic you'd use words[1] to get the right side of the string :

 var str = "1524587-0".split('-'); console.log(str[1]); 

In short , this function splits a String object into an array of strings by separating the string into substrings, using a specified separator string to determine where to make each split.

Answer 2

You can use a regex as well

/[^-]*/.exec("1524587-0")[0]

or split

"1524587-0".split('-')[0]