How can I reproduce JavaScript's console.log() functionality from code-behind in ASP.NET web application?
3 Answers
Surprised this hasn't been given before but this works for me in Code Behind with Chromes console:
Response.Write("<script>console.log('opened window');</script>")
1 Comment
Pablo
In my case, this prints out "<script>console.log('opened window');</script>". So just let away the js-commands and it's fine
You're not going to directly be able to write to the browser's console via code behind. Code behind is being executed on your server, and the browser (or consumer) has no idea what is going on there.
If you want to pass messages from your code-behind that will show in the console.log, you'll have to render them into your page to be executed by javascript.
For instance:
<script>
console.log('@(Model.your_message)');
</script>
Alternatively, you could use Glimpse as suggested in the comments under the question.
4 Comments
codemonkeyliketab
can you explain how this works? What does that string do?
mason
I don't think the
@() syntax is going to work in Web Forms. That's for Razor. You would need to use <% %> style syntax.
ohiodoug
Assumed he was using razor. That's trivial and doesn't change the overall answer, just syntax.
TylerH
"You're not going to directly be able to write to the browser's console via code behind" Which is a real shame, because Web Forms makes it extremely simple to write to the web page via code behind, thanks to
runat="server".Building on @Joel's answer (I don't have comment rights yet) ... it works for me in Chrome, and I built this simple extension method to make it easier & available for all my code-behind pages:
public static void ConsoleLog(this Page page, string msg)
{
msg = msg.Replace("'", ""); //Prevent js parsing errors. Could also add in an escape character instead if you really want the 's.
page.Response.Write("<script>console.log('"+msg+"');</script>");
}
Comments
console.logstatements in the output? Seems like it'd be fairly trivial.