Convert arguments, an array-like object, into an array.

function_convert_arguments_to_array.js

/**
 * Common practice to convert arguments into an array:
 */
 
 var args = Array.prototype.slice.call(arguments);
 
 /* or the shorthand */
 
 var args = [].slice.call(arguments);
 
 /**
  * If you want an array of the arguments that lets you
  * use the optimization of the V8 JavaScript engine used
  * in Chrome and Node you need to resort to this:
  */

var args = new Array(arguments.length);
for(var i = 0; i < args.length; ++i) {
  args[i] = arguments[i];
}

/**
  * Or if you are using ES2015 you can use the
  * spread operator ...:
  */

const args = [...arguments];