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Script merging to improve javascript performance example_javascript tips

WBOYOriginal: 2016-05-16 16:58:331030browse

The initial download of each <script> tag blocks page rendering, so reducing the number of <script> tags a page contains can help improve this situation. This is not only for external link scripts, the number of embedded scripts must also be limited. Every time the browser encounters a <script> tag in the process of parsing the HTML page, it will cause a certain delay due to the execution of the script. Therefore, minimizing the delay time will significantly improve the overall performance of the page. <br><br>Usually a large website or web application relies on several javascript files. You can merge multiple files into one so that you only need to reference one <script> tag, which can reduce performance consumption. File merging can be accomplished through offline packaging tools or real-time online services like YaHoo!combo handle. <br></p> <div class="codetitle"> <span><a style="CURSOR: pointer" data="21647" class="copybut" id="copybut21647" onclick="doCopy('code21647')"><u>Copy code</u></a></span> The code is as follows:</div> <div class="codebody" id="code21647"> <br> <br><html> <br><head> <br><title>Script Example</title> <br></head> <br><body> <br><p>Hello world!</p> <br><script type="http://yui.yahooapis.com/combo?2.7.0/build/yahoo/yahoo-min.js"></script>

Script Example</ title> <br></head> <br><body> <br><p>Hello world!</p> <br><script src="http://yui.yahooapis.com /combo?2.7.0/build/yahoo/yahoo-min.js&2.7.0/build/event/event-min.js" type="text/javascript"></script> <br></body> ; <br></html> <br> </div></div><div class="nphpQianMsg"><div class="clear"></div></div><div class="nphpQianSheng"><span>Statement：</span><div>The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. 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