Pull values from variables inside a string

Question

Got a "shortcode" with certain parameters and dynamic values. Need to pull these values with javascript. This is how the shortcode looks [offer-button width="500px" bg="#ff0000" color="#3366ff" padding="40px 50px" text="Come on in!" font="11px" weight="bold" style="italic"]

For example, I want to pull value of width ("500px" in this case). I've decided to pull piece of string between 'width="' and '"'. Though, I can't get rid of a feeling- there is gotta be a better way. Here is the code of my attempt

<div class="shortcode">[offer-button width="500px" bg="#ff0000" color="#3366ff" padding="40px 50px" text="Come on in!"  font="11px" weight="bold" style="italic"]</div>

var wholeshort = $(".shortcode").html();
var widthstart =  wholeshort.indexOf('width="') + 1;
var widthend = wholeshort.indexOf('"', widthstart);
var widthval = wholeshort.substring(widthstart,widthend);

With this, I get 'idth=', instead of '500px'

Not sure where I went wrong.

CertainPerformance · Accepted Answer · 2019-01-08 23:12:36Z

1

Just use a regular expression, and capture what comes between width=" and the following " in a group:

const match = $(".shortcode").html().match(/width="([^"]+)"/);
if (match) {
  console.log(match[1]);
}

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<div class="shortcode">[offer-button width="500px" bg="#ff0000" color="#3366ff" padding="40px 50px" text="Come on in!"  font="11px" weight="bold" style="italic"]</div>

answered Jan 8, 2019 at 23:12

CertainPerformance

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Comments

Kamil Kiełczewski · Accepted Answer · 2019-01-08 23:17:57Z

0

Try this

let w = /width="(.*?)"/.exec(s)[1];

where s contains your string with data and w contains width value.

let s= $(".shortcode").html();

let w = /width="(.*?)"/.exec(s)[1];

console.log(w);

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<div class="shortcode">[offer-button width="500px" bg="#ff0000" color="#3366ff" padding="40px 50px" text="Come on in!"  font="11px" weight="bold" style="italic"]</div>

edited Jan 8, 2019 at 23:17

answered Jan 8, 2019 at 23:13

Kamil Kiełczewski

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1 Comment

Samij Over a year ago

Sweet! Exactly what I needed. Thanks! Can accept answer in 8 minutes.

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