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HTTP Form Submit Alerts

Alert the user when they submit forms.

// ==UserScript==
// @name         HTTP Form Submit Alerts
// @namespace    HTTP Form Submit Alerts
// @version      0.1.0
// @description  Alert the user when they submit forms.
// @author       Martin H. McWatters
// @license      MIT
// @match        *://*/*
// @grant        none
// ==/UserScript==


function formSubmitted() {
    if(document.getElementsByTagName("form").onsubmit()) {
        siteURL = window.location.href || document.URL;
        alert('Wait! You are submitting a form on ' + siteURL + ". Make sure you trust this site!");
        if (siteURL[6] == 'http://') {
            alert('Are you REALLY sure? This is an insecure site. Your data is significantly more prone to hackers this way.')
        }
    }
}