Apr 23, 2014 · Use map to loop over the array, converting the string to a pair of numbers, performing the addition ensuring that the decimal place is kept intact. var xy = …

Jun 16, 2014 · When using the Array constructor, you use parentheses: var actor = new Array( ... ); You can also use the literal array syntax for the outer array, just as you do with the inner …

Oct 2, 2016 · How do I perform math on items in array, when some are strings and some are numbers?

Feb 19, 2023 · This practical, succinct article walks you through three examples that use three different approaches to find the sum of all elements of a given array in Javascript (suppose …

Math.sin() Math.sin(x) returns the sine (a value between -1 and 1) of the angle x (given in radians). If you want to use degrees instead of radians, you have to convert degrees to …

Oct 1, 2013 · The actual calculation can be easily implemented with Array.reduce. First we can define functions add and subtract. var methods = { add: function(a, b) { return a + b; }, …

map() creates a new array from calling a function for every array element. map() does not execute the function for empty elements. map() does not change the original array.

Apr 11, 2025 · Basic number operations in JavaScript — add, subtract, multiply, and divide. numbers are not numbers if they are defined as strings, and can cause calculations to go …

Arithmetic operators perform arithmetic on numbers (literals or variables). A typical arithmetic operation operates on two numbers. The two numbers can be literals: or variables: or …

Jun 24, 2019 · How do I perform math on items in array, when some are strings and some are numbers? I am attempting to create a calculator using jQuery and JavaScript. My approach …