javascript foreach
const avengers = ['thor', 'captain america', 'hulk'];
avengers.forEach((item, index)=>{
console.log(index, item)
})javascript foreach
const avengers = ['thor', 'captain america', 'hulk'];
avengers.forEach((item, index)=>{
console.log(index, item)
})javascript foreach
var colors = ['red', 'blue', 'green'];
colors.forEach(function(color) {
console.log(color);
});javascript foreach
let numbers = ['one', 'two', 'three', 'four'];
numbers.forEach((num) => {
console.log(num);
}); // one //two //three // fourjavascript .foreach
let colors = ['red', 'blue', 'green'];
// idx and sourceArr optional; sourceArr == colors
colors.forEach(function(color, idx, sourceArr) {
console.log(color, idx, sourceArr)
});
// Output:
// red 0 ['red', 'blue', 'green']
// blue 1 ['red', 'blue', 'green']
// green 2 ['red', 'blue', 'green']JavaScript Array Methods .forEach()
let days = ['Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday'];
days.forEach(function log(day) {
console.log(day)
})
// ES6 verzió óta lehetséges az ún. "array function" használata
// az eredmény ugyanaz lesz, mint az előző szintaxissal
days.forEach(day => {
console.log(day)
});
// amikor a függvénytörzs egy sor, kapcsos zárójel és sortörés nélkül is
// írhatjuk a függvényt
days.forEach(day => console.log(day));javascript array for each
var fruits = ["apple", "orange", "cherry"];
fruits.forEach(myFunction);
function myFunction(item, index) {
document.getElementById("demo").innerHTML += index + ":" + item + "<br>";
}Copyright © 2021 Codeinu
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