Javascript: Taking in User-Input

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I have explicitly defined a Javascript file for my HTML document. In my HTML, I have created a text box where the user can type in their name, then click a button called "submit."

In JS, as soon as they click "submit," I want to store what they have entered as their name in a variable (I'm using eventListener to know when they click "submit"). My question is, how would I be able to do this without using onclick in my HTML doc? Here is my following code at the moment:

my_button.addEventListener('click', my_function);

function my_function(){
   alert("Hello world!"); 
}

One way would be to use oninput event and every time the user types in something update the variable in which you want to store the input. The input tag would look like this: <input type="text" oninput="myFunction()"> and in the function that is declared as the handler you can take the input and store wherever you want.

Window prompt() Method, The prompt() method displays a dialog box that prompts the visitor for input. A prompt box is often used if you want the user to input a value before entering a  It’s important to note that a single equal sign ( =) in JavaScript is called the assignment operator. Its job is to put the value on the right into the variable on the left. When you press Return or Enter, a pop‐up window appears in your browser, just as before.


You can have the code separate. All you'd have to do in the HTML document is to load the javascript file.

Here's a snippet. First the content of the javascript file, and below the simplified HTML document.

let myButton = document.getElementById("theButton");
myButton.addEventListener('click', my_function);

function my_function(){
   alert("Hello world!"); 
}
<button id="theButton">Test</button>

User Input and Output in JavaScript, JavaScript has a few window object methods that you can use to interact with your users. The prompt() method lets you open a client-side window and take input  In JavaScript, we can get user input like this: The code above simply prompts the user for information, and the prints out what they entered in. One of the most important things to note here is that we're storing whatever the user entered into a variable.


to add a separate javascript file do this anywhere in your html

<script type='text/javascript' src = 'path/filename' > </script>

Getting User Input | Javascript, Giraffe Academy is rebranding! I've decided to re-focus the brand of this channel to highlight Duration: 4:44 Posted: Oct 21, 2017 Example to take user input and display on screen using JavaScript When the user clicks on the button, the onclick event has been fired and the JavaScript message listed in the value of the attribute are executed.


to get the value of the input yoy need to slect it first. then you get the value via the value property.

see this example:

   <!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width">
  <title>JS Bin</title>
</head>
<body>
<input id="my_input" type="text">
<button id="my_btn">click</button>
</body>
</html>

then you can use the following javascript.

var my_button = document.querySelector('#my_btn');

    var my_input = document.querySelector('#my_input');
    var value;


    my_button.addEventListener('click',function () {
      value = my_input.value;
      alert(value);
    })

hope this helps!

Get userinput in JavaScript, box pops up, the user will have to click either "OK" or "Cancel" to proceed after entering an input value. Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. Learn more Take user input with JavaScript in the console


How to Prompt the User for Input in JavaScript, <input type="text" id="input1" /> <button onclick="myJsFunction()"></button> <​script type="text/javascript"> function myJsFunction(){ var  JavaScript is not a traditional programming language. It is a scripting language basically built for the web. It doesn't support standard input output stream, but using methods we can implement this functionality. In JavaScript, we have a prompt() method which takes the user input through a popup and return the user entered data. Here is an example, Code


Example to take user input and display on screen using JavaScript , One way to ask a user for data is by using the JavaScript prompt command. To try out the prompt command, open the JavaScript console and type the following:. Examples of using JavaScript to access and manipulate HTML input objects. Button Object Disable a button Find the name of a button Find the type of a button Find the value of a button Find the text displayed on a button Find the id of the form a button belongs to


How to get user input in JavaScript, When the user clicks on the button, the onclick event has been fired and the JavaScript message listed in the value of the attribute are executed. Example. Name Definition and Usage. The prompt() method displays a dialog box that prompts the visitor for input. A prompt box is often used if you want the user to input a value before entering a page.