Using DOMParser to Parse HTML Strings

Published on October 21, 2016


Using DOMParser to Parse HTML Strings

While we believe that this content benefits our community, we have not yet thoroughly reviewed it. If you have any suggestions for improvements, please let us know by clicking the “report an issue“ button at the bottom of the tutorial.

I was playing with the WP Rest API plugin to access content from a WordPress blog into an Ionic 2 app. The WP Rest API returns an HTML string for the content of posts, which can make it hard to deal with. Fortunately though, the DOMParser Web API makes it easy to parse html strings into a fully formed DOM.

First you instantiate a new DOMParser instance and pass it your HTML string using parseFromString(). For this example, let’s say that we stored the HTML string in a variable called htmlContent:

let parser = new DOMParser();
let parsedHtml = parser.parseFromString(htmlContent, 'text/html');

And now parsedHtml is a DOM object that can be interacted with. Let’s extract a few things from it:

// The src of the first image:
let firstImg = parsedHtml.images[0].src;

// The li elements of the second ul element:
let liElements = parsedHtml.getElementsByTagName("ul")[1].children;

Taking the second example with li elements, let’s go a bit further and populate an array with the inner HTML of each element:

let rawLiElements = parsedHtml.getElementsByTagName("ul")[1].children;
let liElements = [];

👉 DOMParser is still experimental, so its implementation is subject to change and support can be limited.

Thanks for learning with the DigitalOcean Community. Check out our offerings for compute, storage, networking, and managed databases.

Learn more about our products

About the authors
Default avatar


Still looking for an answer?

Ask a questionSearch for more help

Was this helpful?
Leave a comment

This textbox defaults to using Markdown to format your answer.

You can type !ref in this text area to quickly search our full set of tutorials, documentation & marketplace offerings and insert the link!

Try DigitalOcean for free

Click below to sign up and get $200 of credit to try our products over 60 days!

Sign up

Join the Tech Talk
Success! Thank you! Please check your email for further details.

Please complete your information!

Featured on Community

Get our biweekly newsletter

Sign up for Infrastructure as a Newsletter.

Hollie's Hub for Good

Working on improving health and education, reducing inequality, and spurring economic growth? We'd like to help.

Become a contributor

Get paid to write technical tutorials and select a tech-focused charity to receive a matching donation.

Welcome to the developer cloud

DigitalOcean makes it simple to launch in the cloud and scale up as you grow — whether you're running one virtual machine or ten thousand.

Learn more
DigitalOcean Cloud Control Panel