Question

In: Computer Science

Exercise 1 (a) Create a HTML file that uses createElement and appendChild to dynamically insert three...

Exercise 1
(a) Create a HTML file that uses createElement and appendChild to dynamically insert three paragraphs when
a button is clicked.
(b) Create a HTML file that includes JavaScript that is similar to:
let recs = [“my item …1”,”my item…2”, …]
i.e. an array that contains several CSV item records. When the user clicks a button, each array element will be
rendered as a list element. Use a HTML list. Use createElement and appendChild.
(c) Redo your createTable code from last week’s lab so that it uses createElement and appendChild rather than
setting an innerHTML property.
Exercise 2
(a) Add an additional button to your 1(c) code. When the user clicks this additional button an additional table
column appears that contains a row number. Use createElement and appendChild to achieve this. Do not use
styles or other techniques to hide/show this additional column.
(b) Rework your 2(b) code so that the additional column contains a checkbox for each row. When the
additional column is created an additional filter button is also created. When the user clicks this additional
filter button the table is restricted to those rows the user has ticked. Another button may be used to reset this
filter.

Solutions

Expert Solution

Dear Student ,

As per the requirement submitted above , kindly find the below solution.

Here a new web page with name "Exercise1B.html" is created, which contains following code.

Exercise1B.html :

<!DOCTYPE html>

<html lang="en">

<head>

<!-- title for web page -->

<title>Exercise 1</title>

<meta charset="UTF-8">

<meta name="viewport" content="width=device-width, initial-scale=1">

</head>

<body>

<!-- button to generate para -->

<input type="button" value="click me to create para" onclick="generatePara()">

<!-- button to generate list -->

<input type="button" value="click me to create list" onclick="generateList()">

<!-- <script> is used for javascript -->

<script>

//function to generate paragraphs

function generatePara()

{

//using for loop

for(var i=0;i<3;i++){

//create paragraphs

var para1=document.createElement("p");

//set text

para1.innerHTML="This is para "+(i+1);

//append para to the body

document.body.appendChild(para1);

}

}

//function to generateList()

function generateList()

{

//array

let items = ["my item 1","my item 2","my item 3"];

//create unordered list

var ol=document.createElement("ol");

for(var i=0;i<items.length;i++){

//create listitems

var li=document.createElement("li");

li.innerHTML=items[i];

ol.appendChild(li);

}

//append ol to the body

document.body.appendChild(ol);

}

</script>

</body>

</html>

======================================================

Output : Open web page Exercise1B.html in the browser and will get the screen as shown below

Screen 1 :Exercise1B.html

Screen 2:When para button is clicked

Screen 3:When ol button is clicked

NOTE : PLEASE FEEL FREE TO PROVIDE FEEDBACK ABOUT THE SOLUTION.

venereology answered 1 year ago
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