closure in javascript
function OuterFunction() {
var outerVariable = 1;
function InnerFunction() {
alert(outerVariable);
}
InnerFunction();
}closure in javascript
function OuterFunction() {
var outerVariable = 1;
function InnerFunction() {
alert(outerVariable);
}
InnerFunction();
}closure in javascript
var counter = (function() {
var privateCounter = 0;
function changeBy(val) {
privateCounter += val;
}
return {
increment: function() {
changeBy(1);
},
decrement: function() {
changeBy(-1);
},
value: function() {
return privateCounter;
}
};
})();
console.log(counter.value()); // logs 0
counter.increment();
counter.increment();
console.log(counter.value()); // logs 2
counter.decrement();
console.log(counter.value()); // logs 1what is a closure in javascript
//Closures are the inner functions that are embedded in parent function
function getName(){
// print name function is the closure since it is child function of getName
function printName(){
return 'Kevin'
}
// return our function definition
return printName;
}
const checkNames = getName();
console.log(checkNames());Copyright © 2021 Codeinu
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