Add input to form using JS
It’s possible to add inputs that are created dynamically by the user to a form?
Let’s say I have this when the page loads:
And after that, I create an input (after the page loads)
How can I add it inside the form that has «my-form» as id? I need to add it inside because i want to use a GitHub plugin that will affect only the inputs that are inside the form.
Is this possible?
PS: Before posting this, searched on the forum but found 2013 post and seems there are some deprecated ways.
How to create an input box in JavaScript?
When you need to handle user data without sending it back to the server, Javascript is extremely beneficial. JavaScript is significantly faster than sending everything to the server to be processed, but you must be able to receive user input and operate with it using the proper syntax. The focus of this tutorial will be on obtaining user input and displaying it on the screen using HTML elements or prompts.
Method 1: Using Prompts
To connect with users, Javascript offers us a few window object methods of which one is the prompt() method. The basic function of the prompt() method is to display a dialog box and take input from a user. The prompt() method is most commonly used to store/save small amounts of information about the user and is most commonly used when the developer wants the user to input data before proceeding to the webpage.
Syntax
The prompt() method takes two parameters: the first is the text parameter, which appears in the dialogue box, and the second is the default parameter, which is the default text displayed in the prompt’s input box. These options are both optional and can be left blank.
prompt() Method Example
In the above JavaScript code, we called the prompt() method and asked the user to input his name. The default value will be Enter name:
Let’s remove the Enter name and type your name:
Now when you click on the OK button you will see the Hello! Nas message alert:
Method 2: HTML and JavaScript
Another method to create an input box in Javascript is to use an HTML input box and then reference that in JavaScript and get its value.
HTML:
In the above code, first, we defined an input box and then a button with the anime of Save. We then referenced the code.js file using the script tag. In the code.js file, all our javascript code will be present.
JavaScript:
const btn = document. getElementById ( "btn" ) ;
btn. addEventListener ( ‘click’ , function ( ) {
var name = document. getElementById ( "myName" ) . value ;
alert ( "Name: " + name ) ;
} ) ;
In the above code, we referenced the button with the id of btn from html and then added an event listener of click to it which will listen continuously and when someone clicks on the save button a function will run. In this function, first, we get the value of the input box using the id given to it which is myName. Then we alert this value.
Conclusion
JavaScript is the programming language whose community is increasing day by day and rightly so as it is the programming language that makes our web page interactive. JavaScript offers us to interact with the users by taking input from the user and then saving that input or displaying that input.
In this article, we took input from the user and displayed that input using two methods i-e prompt() method and referencing an input box from HTML in JavaScript.
Dynamically add button, textbox, input, radio elements in html form using JavaScript.
[ad name=”AD_INBETWEEN_POST”] Adding Elements like textbox, button, radio button etc in a html form using JavaScript is very simple. JavaScript’s document object has a method called createElement() which can be used to create html elements dynamically. We had used this function in our tutorial: Dynamic combobox-listbox-drop-down using javascript to add dynamic options to a combo box-listbox. Let us use this function to create textboxes, radio buttons, buttons etc dynamically and add them in our page. Following is the source code of our example.Also note that we have used setAttribute() method to assign the attributes to our dynamically created element.
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131 Comments
This works fine but it is important to note that the setting of the “name” attribute will fail in IE. It sets the name for the form submission, but does NOT set it in terms of javascript access (you won’t be able to access it by name).
Thanks Harold for the information. I din’t knew that.
How can use the added text box value in php?
description:
the text box will be dynamically added by user and then the added text box value posted to php file.
Hi Saran,
Use normal html form to post the textbox value in PHP script. The dynamically created textbox’s value can be access in PHP using normal $_GET[“textboxname”] variable in PHP.
Hi Viral,
How to label those text boxes,buttons and radio buttons?
Hi Angeline,
To add labels to textboxes, buttons etc you can add text to the parent attribute.
For example:
I have text box A1, B1, C1. I click ADD and the table will append and text box A2, B2, B3 appeared…. and the next row appear when i click ADD again. but i have a button name SUM, when i click SUM, how can i make it to be A1+B1 and the result appear in C1 and also to A2, B2, B3 and below…
Hi jAi,
For implementing such a functionality, you may have to use javascript dom manipulation heavily.
First you may iterate through all the rows of table, get pointer to textboxes Ax and Bx, where x is the row id. Then sum it and update Cx. If I implement such code, my code would be:
You may want to look at similar tutorial: Adding Rows Dynamically in Table.
How to select and deselect the radio elsement created by your code. //
@Chirag,
I think you are using Internet Explorer to view the example.
IE has a known bug (http://webbugtrack.blogspot.com/2008/03/bug-240-setattribute-name-is-half.html) where setAttribute (name) does not works. You can try running this code in Firefox.
that is the worst piece of code ever
Hello viral. Quick question, I hope you can help, I used your code to dynamically create inputs, which works great. However, I had to edit your code so that the variable passed is the id, and not the type. Unfortunately, this makes the created inputs have and id and name as ‘undefined’. I need them to be defined, as they each need a specific name which I’ll give them. I’ll post my code for you, I hope you can help me! Thanks, I appreciate it!
function add(ids) <
//Create an input type dynamically.
var element = document.createElement(“input”);
//Assign different attributes to the element.
element.setAttribute(“type”, “text”);
element.setAttribute(“name”, ids);
element.setAttribute(“id”, ids);
element.setAttribute(“size”, “50”);
element.setAttribute(“maxlength”, “74”);
//Create break
var br = document.createElement(“span”);
br.innerHTML = “”;
//grab span
var span = document.getElementById(“first”);
//Append the element in page (in span).
span.appendChild(element);
//append innerhtml at end
span.appendChild(br);
>
I have a submit button for my form using the dynamic add row, i need to append unique $_POST values so that every value in every row added can be captured,eg text_1 for the 1st row, text_2 and so on. how can i do that,very new to javascript 🙂
thanks
Thanks lot.
Same tutorials available in the many sites.
But here were very user friendly.
Got the correct answer for my pointed question.
Thanks
I want to create a button (yes and no) on the form. I have a text that is displayed after the user clicks yes and then i want the button to appear which is again yes and no. when the user selects the yes or not again another question is displayed with yes and no buttons again. i am unable to do that. do we need to have span id ?
may i know how to position the html elements you wish to add. and may i know also how to save the numerical inputs in the added textbox be summed up and saved in the mysql database using php.
i think i got the solution from your link about php.
i made a invoice program out of it. i added 3 more input text fields that will get the multiplier, the other one the product. and the last one the sum of the products.
how can i compute for the product while add button is pressed.and this will also sum up the products.
Excellent pieces of code but still one problem:
I have a table with a text input box with an id of , for example, text1
The table is in a form which will be submitted to a mysql database and the id will go to a specific column for that id value
The database table is set up to receive data from text boxes with specific id’s
If I add another row dynamically, how can I assure that the next text box will have the correct id, and the next one and so on …
This is critical to the use of this script .
thats bin very useful. thnx bydy!
hey viral tell me dude how to add data from form to SQL with demo…
plzzzz i need a demo for commiting data to SQL thru SQL insert command and button submit in HTML form.
I want to show a textbox Dynamical when i press add more button. How can i do it please give me the soluton.
i’m searching to add elements in my form , i using symfony framework
Can we add any event with any newly created textbox or button? if yes then please suggest the method.
Thanks
Dude, how can we set runat=”server” attribute to textbox in javascript. This is because i am trying to access the value of it in code behind. Very very urgent requirement. Please answer.
Hi Viral My problem is
I want my column heading configurable i.e those values also come from database ((Ajax call) depending on types of user.Can I use Jquery.Just let me know what is best Idea
Thanks a lot!
This is just the jumping off point I needed to add rows and fields on demand to an input form.
I put the function in an onClick event of a “Add New Item” button and then use a hidden field to keep track of the current number of rows for when the form is submitted.
This way the user can add just as many items as they need and store those in the DB… rather than using a flat and wasteful schema.
This is a good toturial site
i need help. tell me any body that where i can get a script that add group of html controls dynamically e.g (3 textfield,combobox,) at a time on one click. i dont need to add one control at a time . plz help me any body
I m a new user please anyone can help me?how can i create this website dynamically
I need a code following informations
ASP.net and MSSQL server, CSS,Javascript.
1. Create a registration form with the following details
– First Name
– Last Name
– Username
– Password
– Date of Birth (Calender) and
– Nationality
a) The details should be stored in the database.
b) After registration a message should display with a unique customer number.
2. Fetch product details from the database and display it in a grid view.
There should be an option to edit the details.
Thanks a lot.
It’s really a good tutorial.
I want to assign my own id and label to each element how can i do that.
please reply me
Thank you
Kirtikumar Panchal
But how will u access the values of all the new fields.
And how abt if i want labels to the fields.
Hi,I m using a for loop to create textboxes.I dont know how they will come in different lines…
My code is
for (i = 1; i <= count; i++) <
var location=["Street Address1","Street Address2","Street Address3","City","State/Province/Territory","Zip","County","Installation Country"];
var textBoxId = "text_" + i;
var element1 = document.createElement("input");
element1.setAttribute("type","text");
element1.setAttribute("id",textBoxId);
element1.setAttribute("name",location[i]);
foo.appendChild(element1);
>
Hi, thx for the code. It works great.
But for the new textfield, how i want to insert into database?
Добавление текстового поля с использованием JavaScript
Всем привет!
В этой статье вы найдете полезный скрипт, с помощью которого сможете с легкостью добавлять текстовые поля.
Для чего это надо? Допустим, в админке вам нужно сделать возможность добавлять поля для дополнительного ввода контактных данных и т.п.
Скрипт небольшой и, я думаю, он вам пригодится.
Как это выглядит?
При нажатии на кнопку « Добавить поле+ », скрипт добавит еще одно дополнительное поле, и так будет добавлять с каждым нажатием кнопки, пока не устанете нажимать . Посмотрите на демонстрацию: