CODEWITHSUNDEEP
javascriptregex
lonerunner
lonerunner

Reputation: 1322

Can someone explain what this regex do?

It's part of code where javascript should watch for some price and match if it's lover than required, but i don't understand regex quite well and it's obvious that the error is in there.

So on a website i have price like

<div class="item_price_now">   $ 1,34 </div>

And on javascript part code looks like this

var maxprice = '0.98';

var itemprice = document.getElementByClassName('item_price_now');
var i = 0;

var currentprice = itemprice[i].innerHTML.replace(/\s+/g, ' ');
currentprice = currentprice.substring(2);

if (currentprice > maxprice)
{ do some code }
else 
{ do some other code }

But this doesn't work, i assume that part of error is in regex, with this i don't get any values, i tried to change it to something like this

(\S+\w)

And it's outputing something (actually i get output of 1,34 ) but still can't match it with maxprice variable.

Can someone explain me what regex above means or at least point me in some direction. Thanks.

Upvotes: 0

Views: 109

Answers (1)

h2ooooooo
h2ooooooo

Reputation: 39532

/\s+/g means "match any space/tab character that is repeated one of more times over the entire string".

Hence it's replacing any multiple whitespaces/tabs with a single whitespace.

It seems that your problem is that you use locale strings to describe your value, as you're comparing the string 0.98 (which is casted by JS) with 1,34 (which cannot be casted by JS, as , would be a thousand seperator)

Upvotes: 4

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