Its output is as follows apples are round substr this

Its output is as follows:
[ 'Apples', 'are', 'round,' ]
substr()
This method returns the characters in a string beginning at the specified location through
the specified number of characters.
Syntax

TypeScript
102
string.substr(start[, length]);
Argument Details
 start − Location at which to start extracting character s (an integer between 0 and
one less than the length of the string).
 length − The number of characters to extract.
Note − If start is negative, substr uses it as a character index from the end of the string.
Return Value
The substr() method returns the new sub-string based on given parameters.
Example
var str = "Apples are round, and apples are juicy.";
console.log("(1,2): " + str.substr(1,2));
console.log("(-2,2): " + str.substr(-2,2));
console.log("(1): " + str.substr(1));
console.log("(-20, 2): " + str.substr(-20,2));
console.log("(20, 2): " + str.substr(20,2));
On compiling, it will generate the same code in JavaScript.
Its output is as follows:
(1,2): pp
(-2,2): y.
(1): pples are round, and apples are juicy.
(-20, 2): nd
(20, 2): d
substring()
This method returns a subset of a String object.
Syntax
string.substring(indexA, [indexB])

TypeScript
103
Argument Details
 indexA − An integer between 0 and one less than the length of the string.
 indexB − (optional) An integer between 0 and the length of the string.
Return Value
The substring method returns the new sub-string based on given parameters.
Example
var str = "Apples are round, and apples are juicy.";
console.log("(1,2): " + str.substring(1,2));
console.log("(0,10): " + str.substring(0, 10));
console.log("(5): " + str.substring(5));
On compiling, it will generate the same code in JavaScript.
Its output is as follows:
(1,2): p
(0,10): Apples are
(5): s are round, and apples are juicy.
toLocaleLowerCase()
This method is used to convert the characters within a string to lowercase while respecting
the current locale. For most languages, it returns the same output as toLowerCase.
Syntax
string.toLocaleLowerCase( )
Return Value
Returns a string in lowercase with the current locale.
Example
var str = "Apples are round, and Apples are Juicy.";
console.log(str.toLocaleLowerCase( ));
On compiling, it will generate the same code in JavaScript.
Its output is as follows:

TypeScript
104
apples are round, and apples are juicy.
toLocaleUpperCase()
This method is used to convert the characters within a string to uppercase while respecting
the current locale. For most languages, it returns the same output as toUpperCase.
Syntax
string.toLocaleUpperCase( )
Return Value
Returns a string in uppercase with the current locale.
Example
var str = "Apples are round, and Apples are Juicy.";
console.log(str.toLocaleUpperCase( ));
On compiling, it will generate the same code in JavaScript.
Its output is as follows:
APPLES ARE ROUND, AND APPLES ARE JUICY.
toLowerCase()
This method returns the calling string value converted to lowercase.
Syntax
string.toLowerCase( )
Return Value
Returns the calling string value converted to lowercase.