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JS 30 challenge - 07 心得

Array Cardio Day2

Demo & Github

DEMO

find & findIndex

const comments = [
	{ text: "Love this!", id: 523423 },
	{ text: "Super good", id: 823423 },
	{ text: "You are the best", id: 2039842 },
	{ text: "Ramen is my fav food ever", id: 123523 },
	{ text: "Nice Nice Nice!", id: 542328 },
];

Array.prototype.find()類似 filter，但他是回傳尋找的值

const find823423 = comments.find((comment) => comment.id === 823423);
console.log(find823423);

Array.prototype.findIndex()則是回傳尋找的 index，

const index = comments.findIndex((comment) => comment.id === 823423);
comments.splice(index, 1);
console.table(comments);

id 823423 是 comments 的第二個值，所以回傳的 index 為 1