The MutationObserver API is not available in Internet Explorer 10, but you can use an alternative approach using the onpropertychange event handler.

Here is an example code snippet that uses the onpropertychange event handler to detect changes in the content of a div element:

var div = document.getElementById('myDiv'); if (div.addEventListener) { // Use MutationObserver for modern browsers var observer = new MutationObserver(function(mutations) { mutations.forEach(function(mutation) { console.log('Content changed'); }); }); observer.observe(div, { childList: true }); } else { // Use onpropertychange for IE10 div.onpropertychange = function() { if (event.propertyName == 'innerHTML') { console.log('Content changed'); } }; }

In this example, the code first checks whether the addEventListener method is available on the div element. If it is available, it uses the MutationObserver API to observe changes to the div content. If addEventListener is not available, the code assumes that the browser is IE10 and sets the onpropertychange event handler for the div element. Whenever the innerHTML property of the div changes, the onpropertychange event fires, and the code logs a message to the console.

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