I want to add a * before every number in a string.
/-200,/- --> /-*200,/-
I tried using .replace(/0/g,'*0'), .replace(/1/g,'*1') ... but that did not work for multiple digit numbers.
1 Answer
.replace(/(\d+)/g, "*$1")
That is, match each instance of one or more digits with \d+ - where \d matches any digit and + means one or more. And use parentheses to make it a capturing group so that you can refer to the match in the replacement string as $1.
console.log("/-200,/-".replace(/(\d+)/g, "*$1"))
console.log("100, 200, 300".replace(/(\d+)/g, "*$1"))
console.log("A number: 123; a second number: 321".replace(/(\d+)/g, "*$1"))