The length property of the JavaScript object is used to find out the size of that object. This property is used with many objects like JavaScript string, JavaScript array, etc. In case of strings, this property returns the number of characters present in the string. In case of an array, this property returns the number of elements present in the array.
Syntax: object.length where the object can either be a string object or an array object
Examples:
Input : print("GeeksForGeeks".length)
Output :13
Input : print([1, 2, 3, 4, 5, 6, 7, 8, 9].length)
Output :9
Explanation:
In the first example 13 is the number of character in the string “GeeksForGeeks”, hence the output is 13.
And likewise in second example the length of the array is 9 and so is the output
Program:
<script> // JavaScript to illustrate length property function func() { // length property for array document.write([1,2,3,4,5,6,7,8,9].length); document.write("<br>"); // length property for string document.write("GeeksForGeeks".length) } func(); </script> |
Output:
9 13
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