link element onload

Question

Is there anyway to listen to the onload event for a element?

F.ex:

var link = document.createElement(\'link\');
link.rel =          


        

Answer 1

E.g. Android browser doesn't support "onload" / "onreadystatechange" events for element: http://pieisgood.org/test/script-link-events/
But it returns:

"onload" in link === true

So, my solution is to detect Android browser from userAgent and then wait for some special css rule in your stylesheet (e.g., reset for "body" margins).
If it's not Android browser and it supports "onload" event- we will use it:

var userAgent = navigator.userAgent,
    iChromeBrowser = /CriOS|Chrome/.test(userAgent),
    isAndroidBrowser = /Mozilla\/5.0/.test(userAgent) && /Android/.test(userAgent) && /AppleWebKit/.test(userAgent) && !iChromeBrowser; 

addCssLink('PATH/NAME.css', function(){
    console.log('css is loaded');
});

function addCssLink(href, onload) {
    var css = document.createElement("link");
    css.setAttribute("rel", "stylesheet");
    css.setAttribute("type", "text/css");
    css.setAttribute("href", href);
    document.head.appendChild(css);
    if (onload) {
        if (isAndroidBrowser || !("onload" in css)) {
            waitForCss({
                success: onload
            });
        } else {
            css.onload = onload;
        }
    }
}

// We will check for css reset for "body" element- if success-> than css is loaded
function waitForCss(params) {
    var maxWaitTime = 1000,
        stepTime = 50,
        alreadyWaitedTime = 0;

    function nextStep() {
        var startTime = +new Date(),
            endTime;

        setTimeout(function () {
            endTime = +new Date();
            alreadyWaitedTime += (endTime - startTime);
            if (alreadyWaitedTime >= maxWaitTime) {
                params.fail && params.fail();
            } else {
                // check for style- if no- revoke timer
                if (window.getComputedStyle(document.body).marginTop === '0px') {
                    params.success();
                } else {
                    nextStep();
                }
            }
        }, stepTime);
    }

    nextStep();
}

Demo: http://codepen.io/malyw/pen/AuCtH