How Collect All Matching Links on a Browser Page?

Questions & Suggestions
4

These things do seem to declutter from memory as soon as one puts them aside for a moment ...

You could, of course, pass in any regexes as KM variables:

(function () {
    'use strict';
     
    var rgx = RegExp(document.kmvar.rgx1);    

     return Array.prototype.slice.call( document.links )
    .filter(function(x) {
        return rgx.test(x.href);
    }).join('\n');
})();

In Sierra onwards, ES6 syntax lets you drop a little noise:

(() => {
    'use strict';

    let rgx = RegExp(document.kmvar.rgx1);

    return Array.prototype.slice.call(document.links)
        .filter(x => rgx.test(x.href))
        .join('\n');
})();
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