Is jquery heavyweight?

jQuery is a widely used JavaScript library, used to complete interactive effects, handle DOM operations, dynamic loading and other functions on web pages. It is famous for simplifying complex JavaScript code and is very popular among developers. However, as a JavaScript library, jQuery is indeed considered to be a very large library that takes up system resources, and is questioned as being heavyweight. Let’s take a look at whether jQuery is a heavyweight.

First of all, it needs to be clear that jQuery is indeed larger than other JavaScript libraries. It implements many common functions, including animation effects, event binding, DOM operations, AJAX requests, etc., as well as many codes for cross-browser compatibility processing, which all require system resources. In addition, jQuery also provides developers with many methods. Although these methods are very practical, they will also increase the size of the library and occupy more system resources. According to the latest statistics, the size of jQuery is about 32KB, which may be difficult in a low-speed network environment with slow download speeds.

However, jQuery is not a bold library alone. In fact, almost all popular JavaScript libraries have roughly the same size. For example, the size of Prototype.js is 120KB, MooTools is 80KB, Dojo is 90KB, and the size of ExtJS is simply over 200KB. Therefore, jQuery has not significantly gained weight in the size of the library, and still has an absolute advantage in terms of quantity indicators.

In addition, although jQuery is relatively large in size, it is particularly suitable for older browsers with poor performance. In fact, early versions of browsers not only had many compatibility issues, but they also contained some loopholes and flaws that would greatly reduce the execution efficiency of JavaScript. jQuery has made a lot of optimizations for these details, allowing it to run efficiently in old browsers.

Finally, it should be pointed out that when using jQuery, if the code can be appropriately streamlined to eliminate some resource-consuming functions and methods, the size of jQuery can be reduced. In addition, we can also compress and obfuscate jQuery. The quality and performance of jQuery can be guaranteed without losing functionality and reducing the size as much as possible.

To summarize, although jQuery is relatively large as the underlying library of JavaScript, this size is necessary to be compatible with more browsers, and the jQuery code has undergone a lot of optimization and can Guarantee efficient execution efficiency in most cases. In addition, in the modern Internet environment, for the vast majority of websites, even if additional libraries are used, the corresponding loading time will not cause too much delay. Therefore, using jQuery is still an excellent option.

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