I read on RegExp in javascript
And I see two ways to create new RegExp:/ab+c/i;
new RegExp('ab+c', 'i');
new RegExp(/ab+c/, 'i');
But I want to create new RegExp like this:
var re = new RegExp(`\d+${variable}`, 'g');
I try but it's not working. How can I do that?
Escape your RegExp character class in the template literal with a \\, e.g. to escape:
\d, write \\d\w, write \\w\s, write \\s...and so on.
let variable = 1;
const re = new RegExp(`\\d+${variable}`, 'g');
console.log(re);You can write the whole expression as a string (to which you can concatenate the value of the variable), then use eval() to change it to a working javascript expression:
var x = "A";
var re = eval("new RegExp('\d+$" + x + "', 'g')");
