A tip when running javascript dynamically

最新推荐文章于 2023-12-12 14:04:53 发布

最新推荐文章于 2023-12-12 14:04:53 发布 · 69 阅读

文章标签：

#JavaScript #IE #ASP #Firefox #CSS #ViewUI

本文探讨了在Firefox与Internet Explorer浏览器中动态加载JavaScript的行为差异。通过具体示例展示了如何使两种浏览器都能重新加载并执行已存在的脚本。

firefox works differently from ie when changesrc of a existing script , in ie this action cause the javascript engine to reload that script, and execute it ,while in firefox, nothing will happen

you can have your own test by following code

<script id="s1" type="text/javascript"> </script> <script language="javascript" type="text/javascript"> document.getElementById("s1").src="1.js"; </script>

in 1.js we simply alert some message

alert("executed");

So if you want the browser to execute some js dynamically , you need to reload the script element. Add a script element into DOM will causethe execution of the scriptin both browser,following code shows how to reload a script element

if(this.element) this.element.parentNode.removeChild(this.element); this.element=document.createElement("SCRIPT"); this.element.type="text/javascript"; this.element.id = "MzJsonElement"; this.element.src=url; document.getElementsByTagName("HEAD")[0].appendChild(this.element);

this might be helpful whenwe needour browser torun somejson callback script