Optimizing the performance of "document.createElement"

When attempting to display multiple rows of data in a popup using a for loop, I initially utilized text strings to create and append the div elements. However, I discovered that using document.createElement resulted in a 20% improvement in performance. Despite this enhancement, creating thousands of rows with document.createElement led to significant delays. Is there a method to enhance performance by generating the element once and reusing it across multiple instances? Any guidance on this matter would be greatly valued.

javascriptjqueryperformancedomcreateelement

Answer №1

After you've made an element, you can make a duplicate by using Element.cloneNode(). This method works just as quickly as document.createElement(), but with the extra benefit of being able to copy any attributes or child nodes/inner HTML in one go using Element.cloneNode(true).

The most time-consuming part of creating new elements is inserting them into the DOM individually. To speed up this process, consider creating a documentFragment, adding all your new elements to it in the required structure, and then appending the entire fragment to the DOM at once.

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