{"id":3104,"date":"2020-08-12T05:00:43","date_gmt":"2020-08-12T05:00:43","guid":{"rendered":"https:\/\/studysection.com\/blog\/?p=3104"},"modified":"2021-01-20T05:00:40","modified_gmt":"2021-01-20T05:00:40","slug":"5-javascript-array-methods-you-should-know","status":"publish","type":"post","link":"https:\/\/studysection.com\/blog\/5-javascript-array-methods-you-should-know\/","title":{"rendered":"5 JavaScript Array Methods You Should Know"},"content":{"rendered":"

Introduction<\/h2>\n

JavaScript has become popular language and its popularity is increasing day by day. Almost every website uses JavaScript directly or indirectly. There are many popular frameworks built in it like React, Angular, Vue, etc. <\/p>\n

Here are the 5 JavaScript array methods you should know:<\/h3>\n
    \n
  1. \nforEach:
    \nThis can help you to iterate the array’s values.
    \nConst array = [0, 1, 2, 3];
    \narray.forEach((item) => {
    \nconsole.log(item);
    \n});<\/code>\n<\/li>\n
  2. \nReduce:
    \nThe reduce() method applies a function against an accumulator and each element in the array to reduce it to a single value
    \nConst array = [0, 1, 2, 3];
    \nConst sum = array.reduce((total, value) => total + value);
    \nconsole.log(sum); \/\/ output: 6<\/code>\n<\/li>\n
  3. \nFilter:
    \nThis method<\/a> creates a new array according to the passed condition inside the provided function.
    \nConst array = [0, 1, 2, 3];
    \nConst filtered = array.filter(num => num>2);
    \nconsole.log(filtered); \/\/ output: [3]<\/code>\n<\/li>\n
  4. \nMap:
    \nThis method builds new array by calling the provided function in each element.
    \nConst array = [0, 1, 2, 3];
    \nConst newArray = array.map(num => num +1);
    \nconsole.log(newArray); \/\/ output: [0, 1, 2, 3];<\/code>\n<\/li>\n
  5. \nIncludes:
    \nThis method checks if array consists of the item passed in the method.
    \nConst array = [0, 1, 2, 3];
    \narray.includes(0); \/\/ output: true
    \narray.includes(5); \/\/ output: false<\/code>\n<\/li>\n<\/ol>\n

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    Introduction JavaScript has become popular language and its popularity is increasing day by day. Almost every website uses JavaScript directly<\/p>\n","protected":false},"author":1,"featured_media":3107,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6],"tags":[518,199,516],"acf":[],"yoast_head":"\nJavaScript Array Methods You Should Know - StudySection Blog<\/title>\n<meta name=\"description\" content=\"JavaScript has become popular language and its popularity is increasing. 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