I know how to use the JavaScript for loops to cycle through arrays for example, but I still didn't understand what the array.length -1 means, specifically the -1 part.

Jul 10, 2025 · The array object observes the length property, and automatically syncs the length value with the array's content. This means: Setting length to a value smaller than the current length …

Although this is usually when you would use length - 1 vs length, there are many other cases where you would also want one over the other, and thus there is no real specific answer.

Free online length converter - converts between 93 units of length, including meter [m], kilometer [km], decimeter [dm], centimeter [cm], etc. Also, explore many other unit converters or learn more about …

Length is the measure of one spatial dimension, whereas area is a measure of two dimensions (length squared) and volume is a measure of three dimensions (length cubed).

The meaning of LENGTH is the longer or longest dimension of an object. How to use length in a sentence.

Use this easy and mobile-friendly calculator to convert between various units of Length.

LENGTH meaning: 1. the measurement of something from end to end or along its longest side: 2. a piece of something…. Learn more.

Illustrated definition of Length: Distance. How far from end to end. Or from one point to another. Example: the length...

Length is the measurement that describes how long an object is. It is the distance from end to end. Learn the units and methods for measuring length in detail!