Answers for "slice()"

58

slice method in js

// array.slice(start, end)
const FRUITS = ["Banana", "Orange", "Lemon", "Apple", "Mango"];
var citrus = FRUITS.slice(1, 3);
// citrus => [ 'Orange', 'Lemon' ]

// Negative values slice in the opposite direction
var fromTheEnd = FRUITS.slice(-3, -1);
// fromTheEnd => [ 'Lemon', 'Apple' ]
Posted by: Guest on March-05-2020
1

[].slice.call(

[]    // Array object
.slice // Accessing the function 'slice' present in the prototype of Array
.call // Accessing the function 'call' present in the prototype of function object(slice)
(document.querySelectorAll('a'),0) 
    // 'call' can have arguments like, (thisArg, arg1,arg2...n). 
   // So here we are passing the 'thisArg' as an array like object,
  // that is a 'nodeList'. It will be served as 'this' object inside of slice function.
 // And finally setting 'start' argument of slice as '0' and leaving the 'end' 
// argument as 'undefined'
Posted by: Guest on April-16-2021
39

javascript slice

//The slice() method extracts a section of a string and returns 
//it as a new string, without modifying the original string.

// same in array but you select elements not characters  


const str = 'The quick brown fox jumps over the lazy dog.';

console.log(str.slice(31));
// expected output: "the lazy dog."

console.log(str.slice(4, 19));
// expected output: "quick brown fox"

console.log(str.slice(-4));
// expected output: "dog."

console.log(str.slice(-9, -5));
// expected output: "lazy"

console.log(str.slice(0, 2)); 
// expected output: "the"
// Up to and including the last index!!!
// Different for python.
Posted by: Guest on March-22-2020
15

array.slice

const animals = ['ant', 'bison', 'camel', 'duck', 'elephant'];

console.log(animals.slice(2));
// expected output: Array ["camel", "duck", "elephant"]

console.log(animals.slice(2, 4));
// expected output: Array ["camel", "duck"]

console.log(animals.slice(1, 5));
// expected output: Array ["bison", "camel", "duck", "elephant"]
Posted by: Guest on July-30-2020
2

slice in javascript

var str1 = "Apple, Banana, Kiwi";

var res1 = str1.slice(7, 13);
var res2 = str1.slice(-12, -6);
var res3 = str1.slice(7);
var res4 = str1.slice(-12);
var res5 = str1.substring(7, 13); //substring() cannot accept negative indexes like slice.
var res6 = str1.substr(7, 9); // substr(start, length) is similar to slice(). second parameter of substr is length of string

document.write("<br>" + "slice:", res1);
document.write("<br>" + "slice -ve pos:", res2);
document.write("<br>" + "slice with only start pos:", res3);
document.write("<br>" + "slice with only -ve start pos", res4);
document.write("<br>" + "substring:", res5);
document.write("<br>" + "substr:", res6);
Posted by: Guest on June-04-2021
4

slice()

/"slice() copies or extracts a given number of elements to a new array"/

let weatherConditions = ['rain', 'snow', 'sleet', 'hail', 'clear'];

let todaysWeather = weatherConditions.slice(1, 3);
// todaysWeather equals ['snow', 'sleet'];
// weatherConditions still equals ['rain', 'snow', 'sleet', 'hail', 'clear']
Posted by: Guest on October-11-2020

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