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JavaScript

Posted by karan kumar
karan kumar
43 Points

why updating the value doesn't update globally?

<p>
var ques = 3;
var quesleft = '[ '+ques+' ques left ]';
var name = prompt("Name"+quesleft);// output Name 3 <br>
ques = ques-1;
var age = prompt("Age"+quesleft);//output Name 3 
what is the reason when i have decreased the counter its not update the value ?
it should show Name 2 because after 1 statement value of ques decreases
</p>

1 Answer

Gonras Karols
Gonras Karols
17,357 Points
Gonras Karols
Gonras Karols
17,357 Points

Because quesLeft was defined when ques was equal to 3 and you haven't updated it after you updated ques. Variables don't work like this - they dont 'track' values of the variables that were assigned to them on initialization. You should update quesLeft right after a new value is assigned to ques, like this -

var ques = 3;
var quesleft = '[ '+ques+' ques left ]';

var name = prompt("Name"+quesleft);// output Name 3 
ques = ques-1;
quesleft = '[ '+ques+' ques left ]';
var age = prompt("Age"+quesleft);//output Name 2