Question

i want to get a variable (which is set when a link is clicked) over to a function and show it as a pop out.

the code as shown below:

$('a#link1').click(function(e){
e.preventDefault();
    var value = 'true';
});


function exe(){
    alert(value);
}

when the function is executed , all i get is value is undentified.

So anyone knows a way around it?

Answer 1

Variables have scope, you define the value variable in the scope of the onclick closure, and it wont be accessible outside it.

The following would work:

var value = false; //Define in the global scope

$('a#link1').click(function(e){
e.preventDefault();
    value = false; //Use in a local-scope is legal. 
});

function doSomething()
{
 alert(value);
}

However having many global variables will make your project hard to maintain, and there are other more clean solutions available. In general i’d recommend you to read a proper book on programming though 🙂