By definition, the length property of an array is an unsigned, 32-bit integer that is always numerically greater than the highest index in the array. The value ... ... <看更多>

Where have you found Array.size() method in native JavaScript? – VisioN. Jan 7 '13 at 19:23. ... <看更多>

Javascript tutorial :: Objects & Arrays :: Length of an array (31/65). 416 views416 views. Aug 11, 2016. 5. 0 ... ... <看更多>

The length of an array is the number of elements it contains whereby it does not matter if those elements are valid objects or values or just "undefined". ... <看更多>

samuelstein commented on Aug 4, 2017. this changes only the length and does not add null values. ... <看更多>