The task is to create an HTML form dynamically with the help of JavaScript. There are two approaches that are discussed below.
Approach 1: Use document.createElement() to create the new elements and use setAttribute() method to set the attributes of elements. Append these elements to the <form> element by appendChild() method. Finally append the <form> element to the <body> element of the document. This example creates a Registration form.
- Example:
<!DOCTYPE html> < html >
< head >
< title >
Create a Form Dynamically with
the JavaScript
</ title >
</ head >
< body style="text-align: center;">
< h1 style="color: green;">
GeeksforGeeks
</ h1 >
< p >
Click on the button to create
a form dynamically
</ p >
< button onClick="GFG_Fun()">
click here
</ button >
< p id="GFG_DOWN"></ p >
< script >
var down = document.getElementById("GFG_DOWN");
// Create a break line element
var br = document.createElement("br");
function GFG_Fun() {
// Create a form dynamically
var form = document.createElement("form");
form.setAttribute("method", "post");
form.setAttribute("action", "submit.php");
// Create an input element for Full Name
var FN = document.createElement("input");
FN.setAttribute("type", "text");
FN.setAttribute("name", "FullName");
FN.setAttribute("placeholder", "Full Name");
// Create an input element for date of birth
var DOB = document.createElement("input");
DOB.setAttribute("type", "text");
DOB.setAttribute("name", "dob");
DOB.setAttribute("placeholder", "DOB");
// Create an input element for emailID
var EID = document.createElement("input");
EID.setAttribute("type", "text");
EID.setAttribute("name", "emailID");
EID.setAttribute("placeholder", "E-Mail ID");
// Create an input element for password
var PWD = document.createElement("input");
PWD.setAttribute("type", "password");
PWD.setAttribute("name", "password");
PWD.setAttribute("placeholder", "Password");
// Create an input element for retype-password
var RPWD = document.createElement("input");
RPWD.setAttribute("type", "password");
RPWD.setAttribute("name", "reTypePassword");
RPWD.setAttribute("placeholder", "ReEnter Password");
// create a submit button
var s = document.createElement("input");
s.setAttribute("type", "submit");
s.setAttribute("value", "Submit");
// Append the full name input to the form
form.appendChild(FN);
// Inserting a line break
form.appendChild(br.cloneNode());
// Append the DOB to the form
form.appendChild(DOB);
form.appendChild(br.cloneNode());
// Append the emailID to the form
form.appendChild(EID);
form.appendChild(br.cloneNode());
// Append the Password to the form
form.appendChild(PWD);
form.appendChild(br.cloneNode());
// Append the ReEnterPassword to the form
form.appendChild(RPWD);
form.appendChild(br.cloneNode());
// Append the submit button to the form
form.appendChild(s);
document.getElementsByTagName("body")[0]
.appendChild(form);
}
</ script >
</ body >
</ html >
|
- Output:
Approach 2: This approach is somewhat similar to the previous one but using the JQuery method to append the elements. Use document.createElement() to create the new elements and use setAttribute() method to set the attributes of elements. Append these elements to the < form > element by append() method of JQuery. Finally append the <form> element to the <body> element of the document. This example creates a LOGIN form.
- Example:
<!DOCTYPE html> < html >
< head >
< title >
Create a Form Dynamically
with the JavaScript
</ title >
</ head >
< body style="text-align: center;">
< h1 style="color: green;">
GeeksforGeeks
</ h1 >
< p >
Click on the button to create
a form dynamically
</ p >
< button onClick="GFG_Fun()">
click here
</ button >
< p id="GFG_DOWN"></ p >
< script >
var down = document.getElementById("GFG_DOWN");
function GFG_Fun() {
// Create a form dynamically
var form = document.createElement("form");
form.setAttribute("method", "post");
form.setAttribute("action", "submit.php");
// Create an input element for emailID
var ID = document.createElement("input");
ID.setAttribute("type", "text");
ID.setAttribute("name", "emailID");
ID.setAttribute("placeholder", "E-Mail ID");
// Create an input element for password
var PWD = document.createElement("input");
PWD.setAttribute("type", "password");
PWD.setAttribute("name", "password");
PWD.setAttribute("placeholder", "Password");
// Create a submit button
var s = document.createElement("input");
s.setAttribute("type", "submit");
s.setAttribute("value", "Submit");
// Append the email_ID input to the form
form.append(ID);
// Append the password to the form
form.append(PWD);
// Append the button to the form
form.append(s);
document.getElementsByTagName("body")[0]
.appendChild(form);
}
</ script >
</ body >
</ html >
|
- Output:
JavaScript is best known for web page development but it is also used in a variety of non-browser environments. You can learn JavaScript from the ground up by following this JavaScript Tutorial and JavaScript Examples.