loop over javascript using foreach
const obj = {
name: 'Jean-Luc Picard',
rank: 'Captain'
};
// Prints "name Jean-Luc Picard" followed by "rank Captain"
Object.keys(obj).forEach(key => {
console.log(key, obj[key]);
});loop over javascript using foreach
const obj = {
name: 'Jean-Luc Picard',
rank: 'Captain'
};
// Prints "name Jean-Luc Picard" followed by "rank Captain"
Object.keys(obj).forEach(key => {
console.log(key, obj[key]);
});.forEach in Javascript
// Arrow function
forEach((element) => { ... } )
forEach((element, index) => { ... } )
forEach((element, index, array) => { ... } )
// Callback function
forEach(callbackFn)
forEach(callbackFn, thisArg)
// Inline callback function
forEach(function callbackFn(element) { ... })
forEach(function callbackFn(element, index) { ... })
forEach(function callbackFn(element, index, array){ ... })
forEach(function callbackFn(element, index, array) { ... }, thisArg)foreach in javascript
<p>forEach() calls a function for each element in an array:</p>
<p>Multiply the value of each element with 10:</p>
<p id="demo"></p>
<script>
const numbers = [65, 44, 12, 4];
numbers.forEach(myFunction)
document.getElementById("demo").innerHTML = numbers;
function myFunction(item, index, arr) {
arr[index] = item * 10;
}
</script>
forEach() calls a function for each element in an array:
Multiply the value of each element with 10:
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