What is the default value of input?

Definition and Usage The value attribute specifies the value of an element. The value attribute is used differently for different input types: For “button”, “reset”, and “submit” – it defines the text on the button. For “text”, “password”, and “hidden” – it defines the initial (default) value of the input field.

What is the value of an input in JavaScript?

Use document. getElementById(id_name) to Get Input Value in JavaScript. We give the id property to our Dom input element, and then use document. getElementById(id_name) to select DOM input element, you can simply use the value property.

What is the default value of number in JavaScript?

Anyways, the default value of a variable in JavaScript is null or undefined .

How do you display input field value?

Input Text value Property

  1. Change the value of a text field: getElementById(“myText”).
  2. Get the value of a text field: getElementById(“myText”).
  3. Dropdown list in a form: var mylist = document.
  4. Another dropdown list: var no = document.
  5. An example that shows the difference between the defaultValue and value property:

What is input type in JavaScript?

Input type: button A push button that activates a JavaScript when it is clicked: Try it Yourself »

What is a default parameter in JavaScript?

Default parameter in Javascript The default parameter is a way to set default values for function parameters a value is no passed in (ie. it is undefined ). In a function, Ii a parameter is not provided, then its value becomes undefined . In this case, the default value that we specify is applied by the compiler.

What are default parameters in JS?

In JavaScript, function parameters default to undefined . However, it’s often useful to set a different default value. This is where default parameters can help. In the past, the general strategy for setting defaults was to test parameter values in the function body and assign a value if they are undefined .

How do you display user input in HTML?

Using HTML forms, you can easily take user input. The tag is used to get user input, by adding the form elements. Different types of form elements include text input, radio button input, submit button, etc.