var + var?

**gabrielcik** · 10-03-2012 04:17 PM

Hi,

I am new in Javascript... i would like to know if it is possible to get this result:

I have this var:
var test= document.forms.forms1

i would like to complete it another var like:
var test1= .name.value=""

is it possible to do smth like:
var test3= test+test1 ?

I simply would like to specify only part of the code (document.forms...) and add the other part by using a different var, in the way to change it according to the situation. Is it possible?

Thank you

**xelawho** · 10-03-2012 04:32 PM

does this get close:

Code:

<body>
<form name="form1">
<input name="name" value="tom"/>
</form>
<script type="text/javascript"> 
var test1="name"
var test2="value"
var test3=document.forms.form1[test1][test2];
alert(test3)
</script>
</body>

**gabrielcik** · 10-04-2012 03:49 AM

Hi,

Yes.. it is exactly this...
Is it possible to do in the way that a var test1 include both name and value?
in the way that i will get the same result but just with one var?

Thank you

**xelawho** · 10-04-2012 11:13 AM

there's not a good one that I can think of. You could do something like this:

Code:

<script type="text/javascript"> 
var test1="name|value"
var test3=document.forms.form1[test1.split("|")[0]][test1.split("|")[1]];
alert(test3)
</script>

but it's probably more trouble than it's worth.

Being that all form elements have a value (or can be given one), you might find that this is more useful:

Code:

<script type="text/javascript"> 
var test1="name"
var test3=document.forms.form1[test1].value;
alert(test3)
</script>

if not, maybe you could describe a little more what you are trying to do - there may be a simpler solution...

**gabrielcik** · 10-05-2012 02:44 PM

Thank you for your answers!

is it possible to put two var inside a If statement?

es, to write smth like this:

if ((var1 > 1) || (var2>1)) ...

in only one expression (to put var1 and var 2 together).

Thank you

**gabrielcik** · 10-05-2012 03:19 PM

Hi,

I understood that it is possible to write if (var1 && var2 >1)... and if i want to write "or"... Do i have to write if (var1>1 || var2>1) or there is also another way?

thx!

**xelawho** · 10-05-2012 03:36 PM

each condition has to be evaluated separately...

Code:

var1=3;
var2=4;

alert(var1>2 || var2>1);
alert(var1>4 || var2>5);
alert(var1>1 && var2>2);
alert(var1>3 && var2>1);

**jack hussey** · 10-06-2012 04:59 AM

is it possible to put two var inside a If statement?

es, to write smth like this:

if ((var1 > 1) || (var2>1)) ...

in only one expression (to put var1 and var 2 together).
Thanks

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