Detect click inside iframe (same domain/sub domain) in Chrome using jQuery

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小蘑菇 2021-01-16 19:37

This question has been asked a lot, and the answers are usually similar.

In basic terms, I need a function to perform when the contents of an iframe are clicked.

2条回答

爱一瞬间的悲伤 (楼主)

2021-01-16 20:07

Here is an example I've put together on jsFiddle that demonstrates one way to use XDM: This is the demo and it includes this fiddle as a child iframe

HTML (parent):

Parent window

JavaScript (parent):

// parent_on_message(e) will handle the reception of postMessages (a.k.a. cross-document messaging or XDM).
function parent_on_message(e) {
    console.log("parent_on_message event fired: ", e);
    // You really should check origin for security reasons
    // https://developer.mozilla.org/en-US/docs/DOM/window.postMessage#Security_concerns
    if (e.origin.search(/^http[s]?:\/\/.*\.jshell\.net/) != -1
        && !($.browser.msie && $.browser.version <= 7)) {
        var returned_pair = e.data.split('=');
        if (returned_pair.length != 2)
            return;
        if (returned_pair[0] === 'message-for-parent') {
            $("p#parent-message").html(returned_pair[1]);
        }
        else
            console.log("Parent received invalid message");
    }
}

jQuery(document).ready(function($) {
    // Setup XDM listener (except for IE < 8)
    if (!($.browser.msie && $.browser.version <= 7)) {
        // Connect the parent_on_message(e) handler function to the receive postMessage event
        if (window.addEventListener)
            window.addEventListener("message", parent_on_message, false);
        else
            window.attachEvent("onmessage", parent_on_message);
    }


    $("button#parent-to-child-button").on("click", function(e) {
        console.log("Sending: " + $("input#message-for-child").attr("value"));
        $("iframe#child").get(0).contentWindow.postMessage('message-for-child=' + $("input#message-for-child").attr("value"), '*');
        
    });

        
});

HTML (child):

Child

JavaScript (child):

// child_on_message(e) will handle the reception of postMessages (a.k.a. cross-document messaging or XDM).
function child_on_message(e) {
    console.log("child_on_message event fired: ", e);
    // You really should check origin for security reasons
    // https://developer.mozilla.org/en-US/docs/DOM/window.postMessage#Security_concerns
    if (e.origin.search(/^http[s]?:\/\/.*\.jshell\.net/) != -1
        && !($.browser.msie && $.browser.version <= 7)) {
        var returned_pair = e.data.split('=');
        if (returned_pair.length != 2)
            return;
        if (returned_pair[0] === 'message-for-child') {
            $("p#child-message").html(returned_pair[1]);
        }
        else
            console.log("Child received invalid message");
    }
}

jQuery(document).ready(function($) {
    // Setup XDM listener (except for IE < 8)
    if (!($.browser.msie && $.browser.version <= 7)) {
        // Connect the child_on_message (e) handler function to the receive postMessage event
        if (window.addEventListener)
            window.addEventListener("message", child_on_message , false);
        else
            window.attachEvent("onmessage", child_on_message );
    }


    $("button#child-to-parent-button").on("click", function(e) {
        console.log("Sending: " + $("input#message-for-parent").attr("value"));
        parent.window.postMessage('message-for-parent=' + $("input#message-for-parent").attr("value"), '*');
        
    });

        
});