JavaScript Array Methods Part2 - JavaScript Tutorial 99

Опубликовано: 04 Март 2022
на канале: ChidresTechTutorials

625

Notes for You:: JavaScript Array Methods Part2 - JavaScript Tutorial 99

JavaScript Array Methods unshift() and shift():

unshift() Method:
adds one or more elements to the beginning of the array
and returns the new length of the array

Syntax:
unshift(...args):number
where:
...args : indicates one or more elements
number: indicates the new length of the array

shift() Method:
removes the element at the beginning of the array
and returns that element

Syntax:
shift():*
where:
*: indicates the first element in the array

Example code:
var studNames = ["Ram","Ravi","Raju","Raghu","Gopal"];

document.write( studNames ); // Ram, Ravi, Raju, Raghu, Gopal
document.write( " " );
document.write( studNames.length ); // 5
document.write( " " );
document.write( " " );

document.write(studNames.unshift("Hitesh")); // 6
document.write( " " );
document.write(studNames); // Hitesh, Ram, Ravi, Raju, Raghu, Gopal
document.write( " " );
document.write( " " );

document.write(studNames.shift()); // Hitesh
document.write( " " );
document.write(studNames); // Ram, Ravi, Raju, Raghu, Gopal
document.write( " " );

Note:
replace < with less-than symbol.
replace > with greater-than symbol.

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Follow the link for next video:
JavaScript Tutorial 100 - splice() Method | slice() Method | JavaScript Array Methods
 • JavaScript Array Methods Part3 - Java...

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JavaScript Tutorial 98 - JavaScript Array Methods | push() Method | pop() Method
 • JavaScript Array Methods Part1 - Java...

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