Good morning,
I'm not sure how the map method works, does one function for each element of array as foreach ? Thanks
I would like to know how to do this = >
Take an array of strings and turn it into an array of numbers indicating the length of each string using Array.map .
- '['Los Angeles', 'New York', 'Huston'] => [11, 8, 6]'
In a simple line:
var a = ['Los Angeles', 'New York', 'Huston'].map(x => x.length);
console.log(a);The map () method creates a new array with the results of the call to the indicated function applied to each of its elements.
If friend is very similar to forEach for each of the iterations we make changes in the element and generate a new array with the changes I hope you help greetings
var a = ['Los Angeles', 'New York', 'Huston'].map(x => x.length);
$("#btn").click(function(){
$(".p").text(a)
})<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<button id="btn" type="button" name="button">cambiar array con map</button>
<p class="p">'Los Angeles', 'New York', 'Huston'</p>