iframe मा क्लिक घटना थप्नुहोस् - क्रस डोमेन iframe मा क्लिक घटना कसरी पत्ता लगाउने - जाभास्क्रिप्ट

const state = {};

(function (setup) {
    if (typeof window.addEventListener !== 'undefined') {
        window.addEventListener('load', setup, false);
    } else if (typeof document.addEventListener !== 'undefined') {
        document.addEventListener('load', setup, false);
    } else if (typeof window.attachEvent !== 'undefined') {
        window.attachEvent('onload', setup);
    } else {
        if (typeof window.onload === 'function') {
            const oldonload = onload;
            window.onload = function () {
                oldonload();
                setup();
            };
        } else {
            window.onload = setup;
        }
    }
})(function () {
    state.isOverIFrame = false;
    state.firstBlur = false;
    state.hasFocusAcquired = false;

    findIFramesAndBindListeners();

    document.body.addEventListener('click', onClick);

    if (typeof window.attachEvent !== 'undefined') {
        top.attachEvent('onblur', function () {
            state.firstBlur = true;
            state.hasFocusAcquired = false;
            onIFrameClick()
        });
        top.attachEvent('onfocus', function () {
            state.hasFocusAcquired = true;
            console.log('attachEvent.focus');
        });
    } else if (typeof window.addEventListener !== 'undefined') {
        top.addEventListener('blur', function () {
            state.firstBlur = true;
            state.hasFocusAcquired = false;
            onIFrameClick();
        }, false);
        top.addEventListener('focus', function () {
            state.hasFocusAcquired = true;
            console.log('addEventListener.focus');
        });
    }

    setInterval(findIFramesAndBindListeners, 500);
});

function isFF() {
    return navigator.userAgent.search(/firefox/i) !== -1;
}

function isActiveElementChanged() {
    const prevActiveTag = document.activeElement.tagName.toUpperCase();
    document.activeElement.blur();
    const currActiveTag = document.activeElement.tagName.toUpperCase();
    return !prevActiveTag.includes('BODY') && currActiveTag.includes('BODY');
}

function onMouseOut() {
    if (!state.firstBlur && isFF() && isActiveElementChanged()) {
        console.log('firefox first click');
        onClick();
    } else {
        document.activeElement.blur();
        top.focus();
    }
    state.isOverIFrame = false;
    console.log(`onMouseOut`);
}

function onMouseOver() {
    state.isOverIFrame = true;
    console.log(`onMouseOver`);
}

function onIFrameClick() {
    console.log(`onIFrameClick`);
    if (state.isOverIFrame) {
        onClick();
    }
}

function onClick() {
    alert(`onClick`);
}

function findIFramesAndBindListeners() {
    return Array.from(document.getElementsByTagName('iframe'))
        .forEach(function (element) {
            element.onmouseover = onMouseOver;
            element.onmouseout = onMouseOut;
        });
}