javascript loop through string
for (var i = 0; i < str.length; i++) {
console.log(str.charAt(i));
}javascript loop through string
for (var i = 0; i < str.length; i++) {
console.log(str.charAt(i));
}string foreach javascript
//for
str='hello'
for (var i = 0; i < str.length; i++) {
console.info(str[i]);
}
//for...of
let result1 = '';
for (let letter of str) {
result1 += letter;
}
console.log(`for...of : ${result1}`)
//forEach
// ES6 version.
let result2 = '';
str.split('').forEach(letter => {
result2 += letter;
});
console.log(`forEach ES6 : ${result2}`)
//or
var result3 = '';
str.split('').forEach(function(letter) {
result3 += letter;
});
console.log(`forEach standard : ${result3}`)
//for...in
var result4 = '';
for (var letterIndex in str) {
result4 += str[letterIndex];
}
console.log(`for...in : ${result4}`)
//map
// ES6 version.
var result5 = '';
str.split('').map(letter => {
result5 += letter;
});
console.log(`map ES6 : ${result5}`)
//or
let result6 = '';
str.split('').map(function(letter) {
result6 += letter;
});
console.log(`map standard : ${result6}`)for each functions javascript
//Am goinmg to practice the next big thing, using for.each function yo tripple iontegers in an array :)
//for.each function is used to run a command on each number or string in an array
const theFigures = [2,4,5,6,7,8,9,12,23,45,68,31,90];
const afterMath = (num) => {
const theArray = [];
num.forEach((n) => {
const trippled = n*3;
theArray.push(trippled);
});
return theArray;
}
console.log(afterMath(theFigures));Copyright © 2021 Codeinu
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