Set value in html textbox

HTML Textbox

HTML textbox is the single line text entry element. It is used to let the users type a single line of text whose length can be restricted by specifying the maximum length. The example of data that can be entered in an HTML textbox are name of a person, name of product, city name, search box etc.

Syntax – HTML Textbox

A textbox or simply a text field in an HTML form is created by using INPUT tag. The TYPE attribute is set to value “TEXT” to indicate that the control will accept only text/alphanumeric/symbol characters.

Attributes- HTML Textbox

HTML Textbox control uses the following attributes.

TYPE

The TYPE attribute is used to define the type of control to be added in the HTML form.

ID

This attribute is used to give identification to the textbox in a web form element. The ID must be an alphanumeric string. The ID value for each field of web form must be unique. This ID is used in a script to manipulate the data entered by a user in the textbox.

NAME

The NAME attribute is used to give name to the textbox that is used to access its values by the associated php or asp script file since the data is passed as keyword-value pairs. It is like a variable name holding a value given by user.

SIZE

The SIZE attribute is used to define how much wide (in characters) the textbox is going to be. It’s the width of the textbox with which the textbox will be displayed to the visitor. If the user types more characters than the width of the textbox then these excess characters will be automatically left scrolled. The extra characters can be accessed by pressing the right arrow key.

MAXLENGTH

This attribute defines how many characters can be typed in the textbox. The textbox will inhibit the user to enter any more characters than the value set in MAXLENGTH attribute.

VALUE

The VALUE attribute represents the text entered by the user in the textbox. If you wish to have a default value to appear in the textbox when the HTML form renders in the browser window, you can specify it in the VALUE attribute.

Example using HTML Textbox

  Your Name   Email ID   Job Designation

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  Источник

  HTML Textbox: A Comprehensive Guide

  

  A textbox is a common input control in HTML, but it has various hidden attributes. An HTML text box is an area on the screen wherein the user can enter the text input. It is a common input element found in many software programs, such as web browsers, email clients, and word processors. When you click on the text box, a cursor is enabled, indicating the user can begin typing.

  What is an HTML Textbox?

  The HTML textbox is an input control that allows the user to enter the text input on the web page. The is used to create a textbox.

  

  

  Here’s How to Land a Top Software Developer Job

  Setting a Default Value for the Textbox

  If you want to set the default value to a textbox, you can use the value attribute. Whenever the form is loaded, the default value is shown inside the textbox.

  

  

  Multiline Textbox

  The HTML is a tag used within a form to declare a multiline textbox that allows the user to input text over multiple lines.

  

  

  Specific Attributes of a Textbox

  The HTML textbox supports the following attributes:

  It specifies that the text box should automatically get focused when the page loads.

  It specifies the width of the text box.

  It specifies the height of the text box.

  It specifies the text to be wrapped in a text box.

  It specifies the width of the text box based on the number of visible characters.

  It specifies one or more forms.

  It specifies the maximum number of characters in a text box.

  It assigns the name to the text box.

  It specifies the short hint about the text box.

  Browser Support

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  Next Steps

  We sincerely hope that this article on HTML textbox offered you a brief insight into how you can enter the text input on your web pages. Although this is informational, to learn more about web development in its entirety, an appropriate certification is highly recommended for jumpstarting your coding career. Simplilearn’s Full Stack Java Developer will help you master web development and help you enhance your skills. The course explores a wide range of relevant topics, that cover front-end, middleware, and back-end technologies of web development using Java. You will learn to build an end-to-end application, test and deploy code, store data using MongoDB, and much more.

  If you have any questions or feedback regarding the HTML tags article, let us know in the comments section of this article. Our experts will get back to you on the same, as soon as possible.

  About the Author

  Aryan Gupta

  Aryan is a tech enthusiast who likes to stay updated about trending technologies of today. He is passionate about all things technology, a keen researcher, and writes to inspire. Aside from technology, he is an active football player and a keen enthusiast of the game.

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  Источник

  How to Assign Value to Textbox Using JavaScript

  

  Sometimes, you may need to set a textbox value based on any event. You can do this by adding an input textbox element in the HTML file and setting its attribute value based on the requirement. JavaScript has predefined methods that can be useful for the stated purpose.

  This post will define the procedure for assigning value to the textbox using JavaScript.

  How to Assign Value to Textbox Using JavaScript?

  For assigning value to the textbox, use the following methods:

  Let’s look at the working of these methods separately!

  Method 1: Assign Value to Textbox Using setAttribute() Method

  The “setAttribute()” method is used to assign a value to the textbox. It is utilized to add or set an attribute to a certain element and give it a value. This method takes two parameters as an argument, and both are mandatory.

  Follow the below-mentioned syntax for setAttribute() method:

  Here, “attributeValue” is the value of the attribute whose name is specified.

  Example

  We will first create a heading and an input field with the default “Text” placeholder value. Next, add a button that will invoke the “myFunction()” method when it is clicked:

  < h5 >Click the button to see the default value of the text field.

  In JS file, define a function named “myFunction()” and access the textbox using “getElementbyId()” method and then set the value with the help of “setAttribute()” method:

  document. getElementById ( «myText» ) . setAttribute ( ‘value’ , ‘LinuxHint’ ) ;

  It can be seen from the output that when the button is clicked, the value of the textbox is set as “LinuxHint”:

  Let’s see the next procedure for assigning value to the textbox.

  Method 2: Assign Value to Textbox Using Text Value Property

  There is another approach for assigning value to the textbox, which is the “value” property of the text. In this approach, you only have to assign the value to the textbox using the value property.

  Use the following syntax for assigning value to a textbox using the value property of the text element:

  Example

  Here, we will assign the value to the already created textbox in the previous example. To do so, access the textbox in the myFunction() and then, assign the required value to the textbox using the “value” property:

  document. getElementById ( «myText» ) . value = «LinuxHint» ;

  As you can see the output successfully, assign the value to the textbox:

  We have gathered the simplest approaches for assigning value to the textbox using JavaScript.

  Conclusion

  For assigning value to the textbox using JavaScript, you can use the JavaScript predefined method called setAttribute() method or the value property of the text element. Both of these approaches work efficiently for assigning value to the textbox. You can select one of them as per your requirement. In this post, we have discussed the approaches for assigning the value to the textbox using JavaScript with detailed examples.

  About the author

  Farah Batool

  I completed my master’s degree in computer science. I am an academic researcher and love to learn and write about new technologies. I am passionate about writing and sharing my experience with the world.

  Источник

  HTML Input Text Box | Field | Value, Size, Width, Multiline

  HTML Input Text Box is needed when the website has to take input from a user. If the application has signup or sign-in functionality, then you need to take input like Name, user ID and password, etc. This can be done by a Text Box Field in HTML.

  To Create a HTML Input Text Box you need to dine type=”text” attribute in tag. In this tutorial, you will learn how to create an HTML Text input box, Set the Height and Width of the text input box, Get the value from the text field, and Multiline Text box in HTML with examples.

  

  A tag is very important to give to the user to input filed to enter a content (data). Not only text format it also provides an option like – CheckBox and Radio Button.

  Syntax

  A simple syntax of HTML input text box size.

  HTML Input Text Example

  See below simple example, to write a name in a text field. For that in the example used a tag with an type=”text” in element.

  

     
  HTML Input Text Box
   Enter Name:  

  Output: How text box will look see below image.

  

  Important Attributes

  Here are some of the additional attributes you can use in the HTML input type text field. The adding an attribute will automatically support and give additional features to a text field.

  Attribute	Description
  maxlength	Set the limit maximum number of characters the input accepted by input bo
  minlength	Set the limit minimum number of characters long the input shou ld be and still be considered valid
  pattern	A validation of input using a regular expression for contents must match in order.
  placeholder	When input text filed empty that will show as an exemplary value to display.
  readonly	A stop to user input any data, its a Boolean attribute indicating whether input be read-only or not.
  size	This number indicating how many characters wide the input field should be.
  spellcheck	Enable spell checking for the input field.

  Get the HTML Input Text Value

  Get the value of a text field is easy. The Value attribute is a DOMString that contains the current value of the text entered into the input text field.

  var x = document.getElementById("myText").value;

  maxlength & minlength

  See the example of how you can the maxlength & minlength text input attribute in HTML code.

     
  HTML Input Text Box
   Name (3 to 10 characters):  

  Output: Screenshot it.

  

  Size Input Text Box

  Using the Size attribute in the input html tag will indicating how many characters wide the input field should be. The value is numeric. Where the value must be a number greater than 0, and the default value is 20.

  Placeholder – How to use

  Just write a placeholder attribute with its value (what hint you want to show) in a tag.

     
  HTML Input Text Box
   Enter Name:  

  Output: See how placeholder will look in input text box.

  

  Q: How to set HTML input text width and Height?

  Answer: By using the style attribute in the tag you can give width and Height to the HTML input text box. See the below simple example of it.

     
  HTML Input Text Box
   Enter Name: 

  Output: See the below changed width and Height to HTML input text box.

  

  Q: How to code HTML input text multiline?

  Answer: For multiline text, you need to use a to get multiline input. For example address of the customer in the shopping site have to give option multiline. Another example of a comment section also has multiline. See below the code for HTML input multiline.

  Do comment if you have any doubt and suggestions on this tutorial.

  Note: The All HTML Input Text Box Examples are tested on Safari browser (Version 12.0.2).
  OS: macOS 10.14 Mojave
  Code: HTML 5 Version

  Источник