Pre každý JavaScript syntaxe
Príklady kódu
javascript foreach
const avengers = ['thor', 'captain america', 'hulk'];
avengers.forEach((item, index)=>{
console.log(index, item)
})pre každý js
const fruits = ['mango', 'papaya', 'pineapple', 'apple'];
// Iterate over fruits below
// Normal way
fruits.forEach(function(fruit){
console.log('I want to eat a ' + fruit)
});foreach javascript
let words = ['one', 'two', 'three', 'four'];
words.forEach((word) => {
console.log(word);
});
// one
// two
// three
// fourjavascript pre každý príklad
var colors = ["red", "blue", "green"];
colors.forEach(function(color) {
console.log(color);
});javascript .predokaždý
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']
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