Is there a way to access a variable from one function in another function without defining it outside of the functions? Here's an example code snippet for reference: http://jsfiddle.net/VC6Wq/1/
function one(){
var zero= 500;
}
function two(){
alert(zero)
}
Here is the solution you need.
let num = 10;
function addOne(value) {
let result = value + 1;
showResult(result);
}
function showResult(finalValue) {
console.log(finalValue);
}
To set a variable in the global scope within a browser environment, you can simply assign it as a property of the window object. Here's an example:
function first() {
window.value = 100;
}
function second() {
console.log(window.value);
}
Here's an alternative approach:
function first(){
var num = 500;
return num;
}
function second(){
var result = first();
console.log(result);
}
To make a variable accessible throughout your Javascript code, you can declare it globally and then modify or access it as required.
function start()
{
globalVar = 0;
alert(globalVar);
next();
}
function next()
{
alert(globalVar);
}
Give this a shot:
const number = 500;
function firstFunction(){
return number;
}
function secondFunction(){
alert(firstFunction());
}
secondFunction();
Alternatively, you can declare another variable globally and assign it the value of the original 'number':
let number_2;
function firstFunction(){
const number = 500;
number_2 = number;
}
function secondFunction(){
alert(number_2);
}
secondFunction();
One way to work around the inability to define a variable globally is to create a simulated global variable by attaching it to a DOM node, as shown below:
// Ensure you use the 'data-' notation
<div id="element" data-custom='750'/>
To assign a value:
// Assign the value to the custom data attribute of the div
$('#element').data('custom', value);
To retrieve the value:
var value = $('#element').data('custom');
alert(value);
Here's an example: http://jsfiddle.net/VC6Wq/4/
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