WhatsApp Group Phone Number Grabber: grab all (unsaved) phone numbers in WhatsApp group

whatsapp.js

/*
Paste the following minified script to browser console (with WhatsApp Web open)
---------------
var phone_list=[];function get_list(e){var t=document.getElementsByClassName("O90ur")[0].innerText;t=t.split(", ");for(var l=0;l<t.length;l++)num=t[l].replace(/[^0-9]/g,""),"6"==num.charAt(0)&&(phone_list.includes(num)||phone_list.push(num));e&&alert(phone_list.join("\n"))}function doc_keyUp(e){e.ctrlKey&&57==e.keyCode?get_list(!0):e.ctrlKey&&56==e.keyCode?(get_list(!1),document.title="List successfully captured!"):e.ctrlKey&&55==e.keyCode?(phone_list=[],document.title="List successfully cleared!"):e.ctrlKey&&54==e.keyCode&&(document.title="Current list length: "+phone_list.length)}document.addEventListener("keyup",doc_keyUp,!1);
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After entering above text, you can use these hotkeys:
- CTRL+9: capture current group chat phone numbers (unsaved numbers) and display an alert()
- CTRL+8: capture current group chat phone numbers and show notification in page title
- CTRL+7: clear captured phone_number list and show notification in page title
- CTRL+6: show current list length in page title

Not minified script:
*/
var phone_list = [];
function get_list(alert_x) {
    var l=document.getElementsByClassName("O90ur")[0].innerText;
    l = l.split(", ");
    for (var i = 0; i < l.length; i++) {
        num = l[i].replace(/[^0-9]/g,"");
        if(num.charAt(0) == "6") {
            if(!phone_list.includes(num)) {
                phone_list.push(num);
            }
        }
    }
    if(alert_x) {
        alert(phone_list.join("\n"));
    }
}

function doc_keyUp(e) {
    if (e.ctrlKey && e.keyCode == 57) {
        get_list(true);
    } else if (e.ctrlKey && e.keyCode == 56) {
        get_list(false);
        document.title = "List successfully captured!";
    } else if (e.ctrlKey && e.keyCode == 55) {
        phone_list = []
        document.title = "List successfully cleared!";
    } else if (e.ctrlKey && e.keyCode == 54) {
        document.title = "Current list length: " + phone_list.length;
    }
}
document.addEventListener('keyup', doc_keyUp, false);