How to extract a value from an element and, optionally, round it

This JavaScript snippet will extract a price from a DOM element, remove all alphanumeric characters, such as currency or symbols or other words, and return it.

The second snippet will also round the value.

let price,
    priceValue;

// Extract value
price = document.getElementById('price');
priceValue = parseInt(price.innerText.replace(/[^0-9.]/g, ''));

document.getElementById('result').innerHTML = priceValue;

// Extract value and round it
price = document.getElementById('price');
priceRounded = parseFloat(price.innerText.replace(/[^0-9.]/g, '')).toFixed(2);

document.getElementById('result-rounded').innerText = priceRounded;

See a fiddle here.

Ciprian Popescu

Technical SEO Specialist, JavaScript Programmer and Senior Full Stack Developer. On a quest to experiment with Canvas, WebGL, JavaScript, SEO and WordPress, among many other things. Founder of WPDublin and SpeedFactor, co-organizer of Dublin WordPress Meetup group.

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