₦airaland Forum

Please. How would can i search for words before a word in javascript. E.g
if i want to search for words or number that comes before X.
I.e
2X +5
THE output should be 2. I tried the regexp but didnt know how to go about it. Am a learner. Please help. Thanks.

search for "javascript substring". Something should come up that will be of help to you.

Good luck!

giving you answers doesn't encourage programming instead it encourages this type of request, read more of regexp. thanks

Yeah. Thanks i got a clue. Will be using the .split() function.

I am thinking, based on your problem, split may not be the answer. There is a function (i blv it is substr) where you pass in a string and a starting and ending point, and it gives you the exact character(s) at the ending point. Split will give you characters based on a delimiter and return it as arrays.

Think again and use the best option.

good luck!

substr is not right that only takes a segment of code that you know the pattern e.g 2x-5 but what of 5x-7+(2x + 5) regular expression fits the scenario perfectly.

^^^ I guess it depends on the kinds of strings that OP wants to manipulate