What occurs if I include several inline JavaScript functions in an onclick event?

Can you please explain what happens in the following scenario:

<input type="submit" name="a" id="b" value="Login" onclick="functionOne();functionTwo();" id="LoginUser_LoginButton">

Is functionOne() executed first and then followed by functionTwo()?

In my current situation with an ASP.NET page, I am attempting to add a domain name to the username on a login page before it is submitted:

<input type="submit" name="LoginUser$LoginButton" id="loginSubmit" value="Login" onclick="appendDomain();javascript:WebForm_DoPostBackWithOptions(new WebForm_PostBackOptions(&quot;LoginUser$LoginButton&quot;, &quot;&quot;, true, &quot;LoginUserValidationGroup&quot;, &quot;&quot;, false, false))" id="LoginUser_LoginButton">

Currently, I am unable to confirm if appendDomain() is running before the form is submitted. Is there a way to verify this without actually submitting the form? Thank you in advance!

javascriptasp.netformssubmitsynchronous

Answer №1

Both functions will execute sequentially as if they were contained within a JavaScript block

Answer №2

Absolutely, that is the expected behavior. Unless there are any asynchronous tasks involved in your code, it will run in a sequential manner.

Nevertheless, embedding Javascript directly in the HTML is generally discouraged. A more recommended approach would be to implement an unobtrusive method such as utilizing .addEventListener.

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