TIL | Slice & Splice
10214 ワード
➕ More Array Methods
🧬 slice() - copies a portion on an array
let colors = ['red', 'orange', 'yellow', 'green', 'blue', 'indigo', 'violet'];
colors.slice(); // ["red", "orange", "yellow", "green", "blue", "indigo", "violet"]
colors.slice(3); // ["green", "blue", "indigo", "violet"]
colors.slice(5); // ["indigo", "violet"]
colors.slice(1); // ["orange", "yellow", "green", "blue", "indigo", "violet"]
let coolColors = colors.slice(3);
coolColors; // ["green", "blue", "indigo", "violet"]
colors // ['red', 'orange', 'yellow', 'green', 'blue', 'indigo', 'violet'];
colors.slice(2, 4); // ["yellow", "green"]
colors.slice(0, 3); // ['red', 'orange', 'yellow']
let warmColors = colors.slice(0,3);
warmColors; // ['red', 'orange', 'yellow']
colors // ['red', 'orange', 'yellow', 'green', 'blue', 'indigo', 'violet'];
colors.slice(-3); // ['blue', 'indigo', 'violet'];
colors.slice(-2); // ['indigo', 'violet'];
🔧 splice - removes/replaces elements
let colors = ['red', 'orange', 'yellow', 'green', 'blue', 'indigo', 'violet'];
colors.splice(5, 1) // ["indigo"]
colors // ["red", "orange", "yellow", "green", "blue", "violet"]
let days = ["Monday", "Tuesday", "Wednesday"]
days.splice(1, 2); // ["Tuesday", "Wednesday"]
days // ["Monday"]
colors // ["red", "orange", "yellow", "green", "blue", "violet"]
colors.splice(1, 0, 'red-orange') // []
colors // ["red", "red-orange", "orange", "yellow", "green", "blue", "violet"]
colors.splice(4, 0, 'yellow-green', 'forestgreen') // []
colors // ["red", "red-orange", "orange", "yellow", "yellow-green", "forestgreen", "green", "blue", "violet"]
🧂 sort - sorts an array
let scores = [1, 70, 100, 2500, 9, -12, 0, 34]
scores.sort() // [-12, 0, 1, 100, 2500, 34, 70, 9]
// ???
Reference
この問題について(TIL | Slice & Splice), 我々は、より多くの情報をここで見つけました https://velog.io/@realryankim/TIL-Slice-Spliceテキストは自由に共有またはコピーできます。ただし、このドキュメントのURLは参考URLとして残しておいてください。
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