使用ASP.NET在运行时生成警报框的差异 [英] Differences in generating alert box at runtime using ASP.NET

问题描述

Hi,

difference b/w Response.Write("<script>alert('Hello');</script>") and this.Page.ClientScript.RegisterStartupScript(this.GetType(), "alert", "alert('Hello!')", true) ?

哪一个是最好的方式，为什么？











我面对面试中的这个问题



提前感谢你



我的尝试：



我试过这个.Page.ClientScript.RegisterStartupScript（this.GetType（），alert，alert（'Hello！'），true ）



以上脚本无法正常工作。我在我的代码中使用更新面板，如何解决此问题。 Plz帮助这个。

Which one is Best way and why?





I face this question in Interview

Thanking you in advance

What I have tried:

I tried with this.Page.ClientScript.RegisterStartupScript(this.GetType(), "alert", "alert('Hello!')", true)

above script is not working properly. I'm using update panel in my code, how resolve this issue. Plz help one this.

推荐答案

你无法控制response.write放置输出的位置，但registerstartupscript确保代码进入正确的位置以便在页面运行时负载。您还可以为脚本提供一个密钥，让您检查脚本是否已经由不同的代码段添加。



另一个需要注意的重要事项是实际上在那里执行javascript然后由于页面还没有发送到客户端。

You can't control where response.write places your output, but registerstartupscript ensures the code goes in the correct place to run when the page loads. You can also give the script a key that lets you check if the script has already been added by a different section of code.

Another important thing to note is that neither actually execute the javascript there and then as the page has not been sent to the client yet.

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