In Lisp, this'd be exactly the job for reduce . You'd see this kind of code: DEMO (reduce #'+ '(1 2 3)) ; 6. Fortunately, in JavaScript, we also have reduce ... ... <看更多>

Introduction to the JavaScript Array reduce() method · First, declare an array of three numbers 1, 2 and 3. · Second, declare the sum variable and set its value ... ... <看更多>

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Using Array.reduce to sum a property in an array of objects - reduce-example.js. ... <看更多>

reduce, and vanilla js alternatives when creating a sum from an array of numbers. 1 - what to know before hand. This is a post on using lodash ... ... <看更多>

In JavaScript, Array is actually an object that uses positive integer properties. For Example: a = [] a[1] = 1 a.b = 'c' a[-1] = -1 a[0.1] ... ... <看更多>