JavaScript | string.codePointAt()
The string.codePointAt() is an inbuilt function in JavaScript which is used to return a non-negative integer value i.e, code point value of the specified element of the given string.
List of code point values of different elements:
Syntax:
string.codePointAt(A)
Parameters: It accepts a parameter which shows the index of an element in the string. Index starts form zero (0).
Return Values: It returns the code point value of the element which is denoted by parameter in the string. It returns undefined if there is no element present at the specified location i.e, at “A”th index.
Code #1:
<script> // Taking a string "gfg" a = "gfg" // Pointing each elements of the string b = a.codePointAt(0); c = a.codePointAt(1); d = a.codePointAt(2); // Printing the code point value of each element document.write(b + "<br>") document.write(c + "<br>") document.write(d) </script> |
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Output:
103 102 103
Code #2:
<script> // Taking a string "gfg" a = "gfg" // Pointing 4th index of the string // index starts from 0 b = a.codePointAt(3); // Printing the code point value document.write(b + "<br>") </script> |
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Output:
undefined
Note: Output is undefined because in “gfg” there is no element at 4th index.
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