Delete two redundant symbols from each element of a string array

Question

I think this question should be an easy one. I use a regex expression which, actually is:

 str_pow = str_input.match(/(?:x)[^][+-]?\d{1,4}\s/g);

The problem lays in that I need only numbers, though they're still of string type(don't think about this), but not this part x^. Currently the how str_pow looks like is this

This means two things: I've to either edit my regex mask, or to find a way to cut the first two "x^" characters of for each element i of the array. Can you help me to do this, because I tried to slice but it was an unsuccessful experiment.

just the numbers after ^x but I need the ^x part in order to pick the proper values from the string — KDX2
– KDX2, Commented Oct 18, 2015 at 14:13
str_pow appear to be array , not string ? What is expected result ? array of digits ? — guest271314
– guest271314, Commented Oct 18, 2015 at 14:15
I think it's the console which says it's an array. Indeed, the type of this array is string => it is a string array filled with x^some_numbers_here -elements and I need to cut those x^ in order to parse the some_numbers_here part later and convert it into an integer for further calculations. — KDX2
– KDX2, Commented Oct 18, 2015 at 14:18

The fourth bird · Accepted Answer · 2015-10-18 14:23:03Z

2

You can loop the array:

var a = ["x^5 ", "x^4 ", "x^2 ", "x^1 "];

for(var i = 0; i< a.length; i++) {
    a[i] = parseInt(a[i].substring(2, a[i].length).trim(), 10);
}
console.log(a);

answered Oct 18, 2015 at 14:23

The fourth bird

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4 Comments

KDX2 Over a year ago

what this ,10 stands for?

The fourth bird Over a year ago

developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/…

KDX2 Over a year ago

aha, ok, it is the numerical system... I'm testing right now 1 mom

KDX2 Over a year ago

Thank you very much, it works completely fine. Thanks, again. :)

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