Returns the first least index of an element within the array equal to the specified value, or -1 if none is found. Chrome Full support Yes Edge Full support Yes Firefox Full support 1. In general, these are convenient characteristics; but if these features are not desirable for your particular use, you might consider using typed arrays. Assign variable name to array object, then assign values to the array. For example, if you had an object with a property named '3d', it can only be referenced using bracket notation.
Extracts a section of an array and returns a new array. Returns the found value in the array, if an element in the array satisfies the provided testing function or undefined if not found. You should use a two dimensional array only when you have a situation like the above, where sub grouping of a main variable is necessary. Calls a function for each element in the array. Sorts the elements of an array in place and returns the array.
Firefox Android Full support 48 Opera Android? Joins all elements of an array into a string. The old position 6,4 is made blank. Creates a new array with the results of calling a provided function on every element in this array. Removes the last element from an array and returns that element. If the argument is any other number, a exception is thrown.