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JavaScript

Posted by Josh Keenan
Josh Keenan
20,315 Points

using string.match()

Hey guys, working on a project and I don't know how to catch the + character using .match as every time it throws an error, I will include a code snippet, hopefully someone can help me out!

var regexPlus = ("+");

if (obj.name.length>0 && obj.number>0 && obj.number.match(regexPlus)) {

I get the error:

undefinedauth.js (line #91): Uncaught SyntaxError: Invalid regular expression: /+/: Nothing to repeat

Josh Keenan
Josh Keenan
20,315 Points

And it caught integers fine using the same formatting in regexPlus so I was hoping that it would be fine on symbols too

1 Answer

james south
seal-mask
.a{fill-rule:evenodd;}techdegree seal-36
james south
Front End Web Development Techdegree Graduate 33,271 Points
james south
.a{fill-rule:evenodd;}techdegree seal-36
james south
Front End Web Development Techdegree Graduate 33,271 Points

(+) is a special character in regex. it means match 1 or more of the preceding character. to match the symbol itself it needs to be escaped. the escape character is (\). put a \ in front of the + and see if that works.

Josh Keenan
Josh Keenan
20,315 Points

Sadly no luck, thanks for the idea though, it's a tricky fix it seems and I can't find much on the internet