javascript slice array
// 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' ]
javascript get sub array
var fruits = ["Banana", "Orange", "Lemon", "Apple", "Mango"]; var citrus = fruits.slice(1, 3); // ["Orange", "Lemon"]
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.
javascript copy array
var oldColors=["red","green","blue"]; var newColors = oldColors.slice(); //make a clone/copy of oldColors
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);
js 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"
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