如何替换JavaScript正则表达式中除“-或+”和数字之外的所有内容

Question

const lat = "-3340Abcs"
const newLat = lat.replace(/\D/g,"") // getting 3340

//expecting -3340

Answer 1

You can use regex /[^-+\\d]/g

 const lat = "-3340Abcs"; const newLat = lat.replace(/[^-+\\d]/g, ""); console.log(newLat);

Answer 2

I assume your expected result is a number. You can use look behind if you want to also remove + and - in the middle of the string:

 const lat = "-3340Ab+cs" const newLat = lat.replace(/(?<=^)[^+-\\d]|(?<!^)\\D/g,""); console.log(newLat);