Skip to main content

HTML DOM lastChild & lastElementChild Property in JAVA SCRIPT

Definition and Usage lastChild..
The lastChild property returns the last child node of the specified node, as a Node object.
The difference between this property and lastElementChild, is that lastChild returns the last child node as an element node, a text node or a comment node (depending on which one's last), while lastElementChild returns the last child node as an element node (ignores text and comment nodes).
Note: Whitespace inside elements is considered as text, and text is considered as nodes (See "More Examples").
This property is read-only.
Tip: Use the element.childNodes property to return any child node of a specified node.
Tip: To return the first child node of a specified node, use the firstChild property.
Return Value:A Node object, representing the last child of a node, or null if there are no child nodes.
Syntax : node.lastChild

Definition and Usage lastElementChild..
The lastElementChild property returns the last child element of the specified element.
The difference between this property and lastChild, is that lastChild returns the last child node as an element node, a text node or a comment node (depending on which one's last), while lastElementChild returns the last child node as an element node (ignores text and comment nodes).
This property is read-only.
Tip: Use the children property to return any child element of a specified element.
Tip: To return the first child element of a specified element, use the firstElementChild property.
Return Value:A Node object, representing the last child element of an element, or null if there are no child elements.
Syntax : element.lastElementChild
Differents way how to declare lastChild & lastElementChild Property in program.
CODING:
<!DOCTYPE html>
<html>
<body>
<h4 id="h4">Soft Languages:</h4>
<ul id="lan"><li>C++</li><li>JAVA</li><li>PYTHON</li></ul>
<button onclick="con()">Last Contant</button>
<button onclick="nod()">Last Node Name</button>
<h4 id="h42">Web Languages:</h4>
<select id="Select" size="4"><option>HTML</option><option>CSS</option><option>JAVA SCRIPT</option><option>XML</option></select><br><br>
<button onclick="con2()">Last Contant</button>
<button onclick="nod2()">Last Node Name</button>
<p><strong>Note:</strong> Whitespace inside elements is considered as text, and text is considered as nodes.If you add whitespace before the first LI element, the result will be "undefined".</p>
<script>
function con() {
    var x = document.getElementById("lan").lastChild.innerHTML;
    document.getElementById("h4").innerHTML += x;
}
function nod() {
    var y = document.getElementById("lan").lastChild.nodeName;
    document.getElementById("h4").innerHTML += y;
}
function con2() {
    var a = document.getElementById("Select").lastChild;
    document.getElementById("h42").innerHTML += a.text;
}
function nod2() {
    var b = document.getElementById("Select").lastChild;
    document.getElementById("h42").innerHTML += b.nodeName;
}
</script>
</body>
</html>

Comments

Popular posts from this blog

BCA SEM 5 SHELL SCRIPT PROGRAM

1  Write a shell script to execute following commands 1. Sort file abc.txt and save this sorted file in xyz.txt 2. Give an example of : To execute commands together without affecting result of each other. 3. How to print “this is a three –line 1. Text message” 4. Which command display version of the UNIX? 5. How would u get online help of cat command? echo “sorting the file” sort abc.txt > xyz.txt echo “executing two commands” who ; ls echo “this is \n a three-line \n Text message” # use -e option if required echo “The version is `uname -a`” echo “Help of cat command” man cat 2  Write a shell script to execute following commands 1. How would u display the hidden files? 2. How delete directory with files? 3. How would user can do interactive copying? 4. How would user can do interactive deletion of files? 5. Explain two functionality of “mv” command with example? echo “1. How would u display the hidden files” echo “2. How delete directory with files” echo “3. How

C++

I NTRODUCTION TO OOP,CLASSES & OBJECTS 1. Use of scope Resolution of Operators. 2. Define a function outside a using scope resolution operators. 3. Write a program to calculate the area of circle, rectangle and square using function overloading. 4. Write a program to calculate the area of circle, rectangle and square using with class & object. 5. Write a program to demonstrate the use of returning a reference variable. 6. Create a class student,stores the details about name,roll no,marks of 5 subject,1.get function accept value of data members,2. display function to display,3.total function to return total of 5 subjects marks. 7. Create function power() in c++. & Create function power() in c++ and default argument. 8. Write a C++ program to swap the value of private data members from 2 different classes. 9. Write a program to illustrate the use of this pointer. 10. An election is contested by five candidates. The candidates are numbered 1 to 5 and the voting is do

USER- DEFINED FUNCTIONS

1. Write a program to calculate average temperature of five days.Create temp() function . 2. Write a program that uses recursive function fibo() thatgenerates a Fibonacci series containing N elements. 3. Write a program that uses a recursive function fact() that findsthe factorial of a given number N. 4. Program to find if the given no. is prime or not. The functionshould accept the number as argument and return if the no. isprime or not. 5. Write a function that accepts an array of integer values. Thefunction should find the number which divides all the othernumbers. 6. Write a user-defined function to perform Square of a number 7. Write a user-defined function to perform Area of a number 8. Write a user-defined function to perform Reverse the number 9. Write a program that uses a function to check whether anentered three digit number is palindrome or not. 10. Write a program to calculate the result of following with recursive calls offunction. 11. Simple interset with usin