Looking for a specific phrase in the data entered by the user

I am dealing with data in ckeditor that looks like this:

<p>test 1</p>

<p>test 2</p>

<p><img src="data:image/jpeg;base64,/9j/4AAQSkZJRgABAQAAAQABAAD/2wBDAAYEBQYFBAYGBQYHBwYIChAKCgkJChQODwwQFxQYGBcUFhYaHSUfGhsjHBYWICwgIyYnKSopGR8tMC0oMCUoKSj/2wBDAQcHBwoIChMKChMoGhYaKCgoKCgoKCgoKCgoKCgoKCgoKCgoKCgoKCgoKCgoKCgoKCgoKCgoKCgoKCgoKCgoKCj/wAARCASwB4ADASIAAhEBAxEB/8QAHA...k=" /></p>

<p><img src="data:image/jpeg;base64,/9j/4AAQSkZJRgABAQAAAQABAAD/2wBDAAYEBQYFBAYGBQYHBwYIChAKCgkJChQODwwQFxQYGBcUFhYaHSUfGhsjHBYWICwgIy7nKSopGR8tMC0oMCUoKSj/2wBDAQcHBwoIChMKChMoGhYaKCgoKCgoKCgoKCgoKCgoKCgoKCgoKCgoKCgoKCgoKCgoKCgoKCgoKCgoKCgoKCgoKCj/wAARCASwB4ADASIAAhEBAxEB/8QAHAABAQEAAwEBAQAAAAAAAAAAAAECA....." /></p>

This data can be spread across multiple lines or appear as a single line.

 <ckeditor formControlName="content" ....>

When the user submits the form, my goal is to extract the base64 string if it exists.

Answer №1

If you're on the hunt for a base64 string within an HTML document, try scanning for attributes that begin with "data:image/". Below is a snippet demonstrating how a base64 string could be nestled inside an img tag:

let webpage = document.documentElement.outerHTML;
let pattern = /data:image\/.*;base64,/g;
let findings = webpage.match(pattern);
console.log(findings);

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