Tag: Javascript

Upwork Javascript Test info

https://www.w3schools.com/jsref/default.asp

JAVASCRIPT TEST 2016 http://upworktesthelp.blogspot.com/2016/10/javascript-test-2016.html

Upwork Javascript Test Answers http://upwork-guru.blogspot.com/2017/05/upwork-javascript-test-answers.html

JavaScript Test 2018 http://upworktestru.com/javascript_test_2016_upwork_answers_questions/

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Select the statement that will return true value.
Array let a = [1,2,3,4] is defined.

let a = [1,2,3,4];
4 in a ;
//False
///////////////////////////////

let a = [1,2,3,4];
a.indexOf(-1)===3;
//False

///////////////////////////////

let a = [1,2,3,4];
a.length;
//4

///////////////////////////////

let a = [1,2,3,4];
a;
//[1,2,3,4];

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reduce() – Get the sum of the numbers in the array: (from left-to-right).
reduceRight() – Get the sum of the numbers in the array: (from right-to-left).
reverse() – Reverse the order of the elements in an array:
pop() – Remove the last element of an array:
pop() – Add a new item to an array:

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– You Don’t Know JS – free ebook series about Javascript

This is a series of books diving deep into the core mechanisms of the JavaScript language. The first edition of the series is now complete.

https://github.com/getify/You-Dont-Know-JS

Read online (free!): “Up & Going”,
Read online (free!): “Scope & Closures”,
Read online (free!): “this & Object Prototypes”,
Read online (free!): “Types & Grammar”,
Read online (free!): “Async & Performance”,
Read online (free!): “ES6 & Beyond”,