How to get value from input js

10 ways to read input form examples in javascript|JQuery

In this blog post, We are going to learn the following ways to read the input type text value in javascript and jquery.

Let us declare a form with input elements and a button

Using document getElementById selector

Document is a native inbuilt object in javascript. This is used to interact with HTML DOM objects and returns the data.

getElementById is one of the methods used to get the value of an element with an id selector Input is defined with id value.

In javascript, input value can be read using getElementById selector

It outputs input elements as seen below

Its value property returns the name entered in the input

getElementsByClassName class selector to read input value

This is a method in document objects to select the elements with classname. getElementsByClassName returns the all the elements with classname matched.

It is class select, return HTMLCollection

Input is defined with class value.

In javascript, input value can be read using getElementById selector

And the output in the console is

getElementsByName selector to parse input value

getElementsByName is a method in document object used to select all the elements with the name attribute. This returns NodeList A simple input element is declared without

Let us see javascript code to read input value using getElementsByName

And the output logged in the console is

getElementsByTagName selector to parse input value

This is the standard way of reading directly with input elements without a name, id, and class

getElementsByTagName returns Array of HTMLCollection, use array index to return the specific input element.

Following is an example to read input value with getElementsByTagName

And the output shown in the console is

document querySelector to get html element values

querySelector is a method in document object, It allows a selection of elements with different selectors. The input element is declared as follows

And the output is

document querySelectorAll to get all elements

querySelectorAll returns array NodeList Like querySelector, this is also used to select the elements using CSS selectors

Jquery selectors to read input element value example

First, please include jquery library CDN in an HTML page

Secondly, jquery ready has to be initialized and will be executed once DOM is loaded on the browser

input element css class selector

and jquery code is

input element selector get value

the input text is defined its value is read using jquery CSS selectors by the name of the element

and jquery code is

Jquery id input selector

the input text is declared with the id attribute and its value is read using jquery CSS selectors

and jquery code is

Input events to read input text value

Here are the following examples using button click and keypress events

Following is an example reading input value with a keyUp event

How to Get an Input’s Value with JavaScript

Input fields enable us to receive data from users.

There are many types of input fields, and while getting their value is done similarly in each case, it requires some thought to do well.

Get the value of a text input

Here is a basic example. It creates a text input field, then prints the contents to the console

The input’s value will be printed to the console when the getVal() function is invoked.

Every input can receive an attribute that establishes a “call to action” – in other words, an event that triggers the execution of a function.

In the above example, we use the DOM event onblur to make calls to our event handler function.

Each type of input will require different events to trigger the handler function – that’s the part of retrieving input from the user that requires some thinking. On top of this, multiple events can be used with the same input. Understanding when these events are triggered, and how they interact with your input field, is the key to getting your event handlers working properly.

The onblur event triggers the getVal() function once the field loses focus (i.e. the user navigates away from the field).

Event Handler Syntax and Notes

Working with event handlers properly requires effort at both the DOM level and at the Script level.

1. DOM level:

a. Make sure that the DOM element has an event attribute that triggers your event handler function.

b. Make sure that the DOM event you’ve chosen is the right choice for your input.

Syntax

To specify your event handler, add it as an attribute on the element using the following format:

2. Script level:

At the script level, simply define your handler function:

const val = findHTMLelement.value

Make use of the val

Find an HTML element

Event handlers often require that you find the HTML element being modified as the first step.

There are several ways to do so – mainly by using different DOM queries.

In the text input field example above, we used document.querySelector(‘input’) to find the input field being modified. This query returns the first input. If there are several input fields, this simple query will not work well – you’ll want to use a more specific DOM query in that case.

Input type

Every input has a type. This type determines what the input element looks like when it is rendered on the page, If the input is of type text, a text field is shown on the browser. If the input is of type checkbox, a checkbox appears.

Get the value of input type checkbox

As mentioned above, retrieving the value of a checkbox field is slightly different from other input field types. Take the following example, which creates a checkbox in the browser window and assigns a handler to the DOM event onchange :

To search by class name, use document.getElementsByClassName(“_className_”)[idx]. This will retrieve all elements that have the associated classname value, so it is important to ensure that only one element with the requested class name exists. The getElementsByClassName() selector returns an array, which means you need to pull the input field from the returned array – hence the [idx].

To retrieve the value of a checkbox, use the checked attribute. The checked attribute returns true or false based on the contents of the input field.

Get the value in an input text box

What are the ways to get and render an input value using jQuery?

13 Answers 13

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You can only select a value with the following two ways:

If you want to use straight JavaScript to get the value, here is how:

There is one important thing to mention:

will return the current real value of a text field, for example if the user typed something there after a page load.

will return value from DOM/HTML.

You have to use various ways to get current value of an input element.

Get values from Input

Set value to Input

I just add one attribute to the input field. value=»» attribute is the one who carry the text content that we entered in input field.

you can use this one directly on your input element.

How to get text box value in JavaScript

I am trying to use JavaScript to get the value from an HTML text box but value is not coming after white space

I only get: «software» from the above. I am using a script like this:

How do I get the full value: «software engineer»?

16 Answers 16

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Your element does not have an ID but just a name. So you could either use getElementsByName() method to get a list of all elements with this name:

Or you assign an ID to the element:

+1 Gumbo: ‘id’ is the easiest way to access page elements. IE (pre version 8) will return things with a matching ‘name’ if it can’t find anything with the given ID, but this is a bug.

id-vs-name won’t affect this; I suspect what’s happened is that (contrary to the example code) you’ve forgotten to quote your ‘value’ attribute:

ontop has some problems as unicode encoding/decoding operations so use this function encoding strings/arrays

Provided when you want the text box value. Simple one:

If you are using ASP.NET, the server-side code tags in these examples below will provide the exact control ID, even if you are using Master pages.

If it is in a form then it would be:

Then you would say in javascript:

Here is a simple way

If you are using any user control and want to get any text box values then you can use the below code:

The problem is that you made a Tiny mistake!

This is the JS code I use:

You Need to change your code as below:-

because you used space between software engineer html/php will not support space between value under textbox, you have to use this code It will work

Try that code above.

jobValue : variable name.
FormName : Name of the form in html.
txtJob : Textbox name

This should be simple using jquery:

Set id for the textbox. ie,

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How to Get the Value of Text Input Field Using JavaScript

In this tutorial, you will learn about getting the value of the text input field using JavaScript. There are several methods are used to get an input textbox value without wrapping the input element inside a form element. Let’s show you each of them separately and point the differences.

The first method uses document.getElementById(‘textboxId’).value to get the value of the box:

You can also use the document.getElementsByClassName(‘className’)[wholeNumber].value method which returns a Live HTMLCollection. HTMLCollection is a set of HTM/XML elements:

Or you can use document.getElementsByTagName(‘tagName’)[wholeNumber].value which is also returns a Live HTMLCollection:

Another method is document.getElementsByName(‘name’)[wholeNumber].value which returns a live NodeList which is a collection of nodes. It includes any HTM/XML element, and text content of a element:

Use the powerful document.querySelector(‘selector’).value which uses a CSS selector to select the element:

There is another method document.querySelectorAll(‘selector’)[wholeNumber].value which is the same as the preceding method, but returns all elements with that selector as a static Nodelist:

Nodelist and HTMLCollection

The HTMLCollection represents a generic collection of elements in document order suggesting methods and properties to select from the list. The HTMLCollection in the HTML DOM is live, meaning when the document is changed it will be automatically updated. NodeList objects are collections of nodes returned by properties such as Node. There are two types of NodeList: live and static. It is static when any change in the DOM does not affect the content of the collection. And live when the changes in the DOM automatically update the collection. You can loop over the items in a NodeList using a for loop. Using for. in or for each. in is not recommended.