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Dev tools · January 21, 2019

FromJS

An experimental data-flow analysis tool for JavaScript

FromJS launched on January 21, 2019 with 4 votes. The site was still online in September 2026, 7 years on.

Visit fromjs.com ↗FromJS alternatives

What it does

FromJS shows you where each value in the DOM comes from.

Find the origin of any character in the DOM

For example, some data might have been loaded using fetch, some might have been stored in localStorage, and some might have been hard-coded in the JavaScript code. Then run fromjs from the command line. This will open a new Chrome window. Loading pages will be very slow and some sites will befrom fromjs.com

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