How to get variable name javascript?

var testint=1;

var teststr="val";

var val1=5;//print value

var val2=8;

var val3=4;

Debug.Log(this[teststr+testint.ToString()]);//I want to variable name value.

 

Is there a reason you need to do this? It's not recommended:

http://stackoverflow.com/questions/1009911/javascript-get-argument-value-and-name-of-passed-variable

Clean code and the debugger eliminates any necessity for displaying the variable name.

 

I'm going to use a lot of argument.If more had it not been for the if or switch.Like for instance cannot be similar?

 

Sorry, I don't understand what you're asking. You shouldn't need to know the variable name in the debugger, as it already tells you the error and the line its on. Also, you shouldn't be debugging that many lines of code - just when there is an error. Even if you pass a lot of arguments, it will tell you which variable is null or cast improperly in the debugger without using debug.log.

As for the rest, I'm not certain what you are asking, or what you mean by "If more had it not been for the "if" or switch.Like for instance cannot be similar?". Can you elaborate?

 

As in my example I want to print the value of val1.

 

OH!

So you're trying to print the int of val1 as a string.

Well, debug.log does it automatically:

Debug.Log(var1);

If you want to add them together, you can do:

Code (csharp):

1.  
2. var varstr = value;
3. var var1 = 2
4. var testint = 3
5.  
6. Debug.Log(varstr + ": " + var1 + testint);
7.  

This gives you:

Code (csharp):

1.  
2. Value: 23
3.  

However, if you want to print the value of an integer or float anywhere else, you would need to have .ToString() on the end of it.

 

No, not that way.I want my (teststr + testint) in the form.Access the value of val1.

 

Okay, I'm still not 100% understanding, so I'm going to shoot a few things out

By form do you mean a text field: form1 = teststr + (val1 + testint).ToString();

Or are you trying to add a string an int? var sum = val1 + testint + int.Parse(intstr);

If those don't help you, then I can't understand what you're asking for.

 

var testint=1;

var teststr="val";

var val1="val1 texts";//print

var val2="val2 texts";

var val3="val3 texts";

Debug.Log(this[teststr+testint.ToString()]);//I want to val1.So "val1 texts"
//////

var testint=2;//!!!

var teststr="val";

var val1="val1 texts";

var val2="val2 texts";//print

var val3="val3 texts";

Debug.Log(this[teststr+testint.ToString()]);//I want to val1.So "val2 texts"
//////

var testint=3;//!!!

var teststr="val";

var val1="val1 texts";

var val2="val2 texts";

var val3="val3 texts";//print

Debug.Log(this[teststr+testint.ToString()]);//I want to val1.So "val3 texts"

I don't want if (testint==1){Debug.Log(val1);} or switch(testint){case 1: Debug.Log(val1);} etc..

 

You can use GetField on the GetType(this). Basically looking into your own object. So this will work:

Code (csharp):

1.  
2. Debug.Log(this.GetType().GetField(teststr+testint).GetValue(this));
3.  

 

Thank you very much.

 

Okay, so you want 1 debug.log for all 3 potential variables? Without any conditionals?

I'm not certain you can. You need something there for the code to know which variable to output. How exactly would it know which variable you want debug.log to send you? Honestly, you could just do this:

Debug.Log("Val1: " + val1 + " " + "Val2: " + val2 + " " + "Val3: " + val3);

The only reason to use debug is when something bad happens, so either you need conditional formatting (if, switch, try/catch, etc) or you need to output everything and decide what is important, then comment out the debug.log line when you no longer need it.

That's interesting.

 

Thanks for help.zombiegorilla solved my problem.

 

My guess was that the OP was just using the Debug as an example of what he was trying to do, not the actual/final implementation. Accessing variables dynamically isn't generally a best practice, but there can be some use cases for them.