JavaScript Code References

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arr.shift()

array.length gets the number of items in an array in JavaScript.

Outputs a message to the web console. The message may be a single string, or it may be any one or more JavaScript objects.

Rounds a number up to the next largest integer.

Rounds a number down to the next largest integer less than or equal to the given value.

Returns the value of a number rounded to the nearest integer.

Gets the length of a string a JavaScript.

split() uses a pattern or separator to divide a string into a list of substrings by searching for the pattern or separator.

The trim() removes whitespace from both ends of a string.