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JReed 88JReed 88 

Lightning Communities 'Edit Meta Tags' not working for IE 11





In Lightning Communities does the new page level feature to 'Edit Meta Tags' work for IE 11? When we add simple meta tags we get the following error, but all other browsers worked: Action failed: forceCommunity:seoAssistant$controller$init [Object doesn't support property or method 'forEach'] Callback failed: serviceComponent://ui.comm.runtime.components.aura.components.siteforce.controller.PubliclyCacheableComponentLoaderController/ACTION$getPageComponent
Best Answer chosen by JReed 88
NagendraNagendra (Salesforce Developers) 
Hi,

IE 11 is not supported https://help.salesforce.com/articleView?id=getstart_browsers_sfx.htm&type=5 in lightning experience. I would not expect any new features or even the features which are currently supported, to work with this browser. The official recommendation https://help.salesforce.com/articleView?id=Internet-Explorer-Performance-Characteristics-for-Lightning-Experience&type=1 is to use another browser or have users use classic when in IE 11.

Support for Internet Explorer 11 to access Lightning Experience is retiring beginning in Summer ’16.

From a technical perspective, its due to the forEach function for some list is missing - it's likely not supported by the browser https://developer.mozilla.org/en-US/docs/Web/API/NodeList/forEach.

If you have control over the scripts loaded on this page, and assuming its a NodeList which is missing the forEach, you can try to add this poly-fill to the page, in order to prevent this error from occurring: 
if (window.NodeList && !NodeList.prototype.forEach) {
    NodeList.prototype.forEach = function (callback, thisArg) {
        thisArg = thisArg || window;
        for (var i = 0; i < this.length; i++) {
            callback.call(thisArg, this[i], i, this);
        }
    };
}
You might need a different target object, but the idea is the same.

Hope this helps.

Kindly mark this as solved if the reply was helpful so that it gets removed from the unanswered queue which results in helping others who are encountering a similar issue.

Thanks,
Nagendra