Most efficient way to create a zero filled JavaScript array?

by

ES6 introduces Array.prototype.fill. It can be used like this:

new Array(len).fill(0);

Not sure if it’s fast, but I like it because it’s short and self-describing.

It’s still not in IE (check compatibility), but there’s a polyfill available.

More Related Contents:

  1. compare each 5 numbers of two array [closed]
  2. Convert string into several integer arrays [duplicate]
  3. How to get all the values associated with an object in array?
  4. Sort array of objects by string property value
  5. How to determine if Javascript array contains an object with an attribute that equals a given value?
  6. How to sort 2 dimensional array by column value?
  7. JQuery .each() backwards
  8. Why does javascript’s “in” operator return true when testing if 0 exists in an array that doesn’t contain 0?
  9. Add property to an array of objects
  10. How to update an “array of objects” with Firestore?
  11. How to randomize (shuffle) a JavaScript array?
  12. Copy array by value
  13. Reverse array in Javascript without mutating original array
  14. Sorting objects by property values
  15. Razor MVC Populating Javascript array with Model Array
  16. Fastest JavaScript summation
  17. How to find duplicate values in a JavaScript array of objects, and output only unique values?
  18. Using promise function inside Javascript Array map
  19. Javascript passing arrays to functions by value, leaving original array unaltered
  20. What does $(selector)[0] mean in jQuery?
  21. Get list of duplicate objects in an array of objects
  22. Change the value of an array changes original array JavaScript
  23. Returning only certain properties from an array of objects in Javascript [duplicate]
  24. Splicing a Javascript array from within the callback passed to forEach
  25. Sum two arrays in single iteration
  26. Array.size() vs Array.length
  27. Create array of all integers between two numbers, inclusive, in Javascript/jQuery
  28. What is the difference between “in operator” and “includes()” for JavaScript arrays
  29. Sorting an Array of JavaScript Objects a Specific Order (using existing function)
  30. default array values

Leave a Comment