List all js global variables used by site (not all defined!)

Question

What is the way to list all global variables that have been used by the site? Can any browser javascript debugger do that? By used I mean READ, not changed/added. Detect ifr

Answer 1

Take the list from Object.keys(window), remove the global variables the browser generates by default, you are left with only the global variables you declared on page. Note: functions you declared also count as global variables.

const listGlobal = ()=> { //for debugging purposes
    //put this function inside your html or javascript. Go to the html page.
    //In chrome console type listGlobal(); to see list of global vars

    //Array of global variables that exist in chrome browser by default
    var stdChromeVars = ["parent","opener","top","length","frames","closed","location","self","window","document","name","customElements","history","locationbar","menubar","personalbar","scrollbars","statusbar","toolbar","status","frameElement","navigator","origin","external","screen","innerWidth","innerHeight","scrollX","pageXOffset","scrollY","pageYOffset","visualViewport","screenX","screenY","outerWidth","outerHeight","devicePixelRatio","clientInformation","screenLeft","screenTop","defaultStatus","defaultstatus","styleMedia","onsearch","isSecureContext","onabort","onblur","oncancel","oncanplay","oncanplaythrough","onchange","onclick","onclose","oncontextmenu","oncuechange","ondblclick","ondrag","ondragend","ondragenter","ondragleave","ondragover","ondragstart","ondrop","ondurationchange","onemptied","onended","onerror","onfocus","onformdata","oninput","oninvalid","onkeydown","onkeypress","onkeyup","onload","onloadeddata","onloadedmetadata","onloadstart","onmousedown","onmouseenter","onmouseleave","onmousemove","onmouseout","onmouseover","onmouseup","onmousewheel","onpause","onplay","onplaying","onprogress","onratechange","onreset","onresize","onscroll","onseeked","onseeking","onselect","onstalled","onsubmit","onsuspend","ontimeupdate","ontoggle","onvolumechange","onwaiting","onwebkitanimationend","onwebkitanimationiteration","onwebkitanimationstart","onwebkittransitionend","onwheel","onauxclick","ongotpointercapture","onlostpointercapture","onpointerdown","onpointermove","onpointerup","onpointercancel","onpointerover","onpointerout","onpointerenter","onpointerleave","onselectstart","onselectionchange","onanimationend","onanimationiteration","onanimationstart","ontransitionend","onafterprint","onbeforeprint","onbeforeunload","onhashchange","onlanguagechange","onmessage","onmessageerror","onoffline","ononline","onpagehide","onpageshow","onpopstate","onrejectionhandled","onstorage","onunhandledrejection","onunload","performance","stop","open","alert","confirm","prompt","print","queueMicrotask","requestAnimationFrame","cancelAnimationFrame","captureEvents","releaseEvents","requestIdleCallback","cancelIdleCallback","getComputedStyle","matchMedia","moveTo","moveBy","resizeTo","resizeBy","scroll","scrollTo","scrollBy","getSelection","find","webkitRequestAnimationFrame","webkitCancelAnimationFrame","fetch","btoa","atob","setTimeout","clearTimeout","setInterval","clearInterval","createImageBitmap","close","focus","blur","postMessage","onappinstalled","onbeforeinstallprompt","crypto","indexedDB","webkitStorageInfo","sessionStorage","localStorage","chrome","applicationCache","onpointerrawupdate","trustedTypes","speechSynthesis","webkitRequestFileSystem","webkitResolveLocalFileSystemURL","openDatabase","caches","ondevicemotion","ondeviceorientation","ondeviceorientationabsolute"];


    //load the current list of global variables
    let thisdocVars = Object.keys(window);

    //remove from the current list any variables that's in the browser default list
    stdChromeVars.forEach(DelFunc);
        function DelFunc(item) {
            thisdocVars.forEach((e,i)=>{if(e==item){thisdocVars.splice(i, 1);}});
        }

    //separate variables into functions and variables
    let thisdocfunc = [];
    let thisdocvar = [];
    thisdocVars.forEach((e)=>{if(typeof window[e]=="function"){thisdocfunc.push(e);}else{thisdocvar.push(e);}});
    console.log("Global Functions:\n" + thisdocfunc);
    console.log("Global Variables:\n" + thisdocvar);
    //Ctrl+Shift+i to see console in chrome
}