I am a beginner in JavaScript and wanted to ask the following: I have two simple functions and was wondering if there is any way to pass a variable value from one function to another. I know I can just move it outside the function to be used in other functions as well but just need to know the way how I can have one local variable and manipulate with it in my second function. Is this possible and how?
Here is some code:
window.onload = function show(){
var x = 3;
}
function trig(){
alert(x);
}
trig();
The question is: how do I access variable x (declared in the function show) from my second function trig?
3 Answers
First way is
function function1()
{
var variable1=12;
function2(variable1);
}
function function2(val)
{
var variableOfFunction1 = val;
// Then you will have to use this function for the variable1 so it doesn't really help much unless that's what you want to do. }
Second way is
var globalVariable;
function function1()
{
globalVariable=12;
function2();
}
function function2()
{
var local = globalVariable;
}
Adding to @pranay-rana's list:
Third way is:
function passFromValue(){
var x = 15;
return x;
}
function passToValue() {
var y = passFromValue();
console.log(y);//15
}
passToValue();
You can very easily use this to re-use the value of the variable in another function.
// Use this in source
window.var1= oEvent.getSource().getBindingContext();
// Get value of var1 in destination
var var2= window.var1;
