CODEWITHSUNDEEP
javascriptarraysslice
Code Guy
Code Guy

Reputation: 3198

Slicing 2 dimensional array of strings

I have a string array where I need to display from 2nd item onwards. But within each item I need to further display from 2nd item. Say

I have an array

function myFunction() {
    var fruits = ["BBanana", "BOrange", "TLemon", "TApple", "YMango"];
    var citrus = fruits.slice(1).join("<br/>"); //skip first item
    document.getElementById("demo").innerHTML = citrus;
}

The expected output is 

Orange
Lemon
Apple
Mango

Instead

BOrange
TLemon
TApple
YMango

How do i achieve using improved performance?

Upvotes: 1

Views: 54

Answers (3)

Olga
Olga

Reputation: 11

You can use reduce function, it will be less code than in other cases

function myFunction() {
    const fruits = ["BBanana", "BOrange", "TLemon", "TApple", "YMango"];   
    const temp = fruits.slice(1).reduce( (ac, item) => ac + `${item.slice(1)}<br/>`, '')

    document.getElementById("demo").innerHTML = temp;
}

Upvotes: 1

vicky patel
vicky patel

Reputation: 705

var fruits = ["BBanana", "BOrange", "TLemon", "TApple", "YMango"];
    for(var i = 1; i < fruits.length; i++){
console.log(fruits[i].slice(1));
};

Upvotes: 1

Ori Drori
Ori Drori

Reputation: 191966

After you slice off the 1st item, use Array#map to create a list of item without the 1st letter using String#substring, then join:

Map and then join:

function myFunction() {
  var fruits = ["BBanana", "BOrange", "TLemon", "TApple", "YMango"];
  var citrus = fruits.slice(1)
    .map(function(str) {
      return str.substring(1);
    })
    .join("<br/>");
  demo.innerHTML = citrus;
}

myFunction();
<div id="demo"></div>

Upvotes: 3

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