Html тег onclick if

How to Make Button onclick in HTML

The onclick attribute is an event attribute that is supported by all browsers. It appears when the user clicks on a button element. If you want to make a button onclick, you need to add the onclick event attribute to the element.

How to add URL to the window object

The button onclick runs a script when the user clicks a button. Let’s see an example where we have a button, clicking on which you’ll go to our website. To achieve this, we’ll just add the URL of the website to the window object.

Example of adding URL to the window object:

html> html> head> title>Title of the document title> head> body> button onclick="window.location.href='https://w3docs.com';">Click Here button> body> html>

You can also use a button onclick in order to know the current date just by adding «getElementById(‘demo’).innerHTML=Date()» to the onclick event.

Example of using a button onclick to know the current date:

html> html> head> title>Title of the document title> head> body> p>Click the button to see the current date. p> button onclick="getElementById('demo').innerHTML=Date()">What day is today? button> p id="demo"> p> body> html>

The onclick event is used to call a function when an element is clicked. That is why it is mostly used with the JavaScript function. Let’s consider an example where you need to click the button to set a function that will output a message in a element with id=»demo».

Example of adding an onclick event:

html> html> head> title>Title of the document title> head> body> p>There is a hidden message for you. Click to see it. p> button onclick="myFunction()">Click me! button> p id="demo"> p> script> function myFunction( ) < document.getElementById("demo").innerHTML = "Hello Dear Visitor!
 We are happy that you've chosen our website to learn programming languages. We're sure you'll become one of the best programmers in your country. Good luck to you!"; > script> body> html>

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onclick Event

The onclick event occurs when the user clicks on an HTML element.

Mouse Events

Event	Occurs When
onclick	The user clicks on an element
oncontextmenu	The user right-clicks on an element
ondblclick	The user double-clicks on an element
onmousedown	A mouse button is pressed over an element
onmouseenter	The pointer is moved onto an element
onmouseleave	The pointer is moved out of an element
onmousemove	The pointer is moving over an element
onmouseout	The mouse pointer moves out of an element
onmouseover	The mouse pointer is moved over an element
onmouseup	The mouse button is released over an element

See Also:

Tutorial:

Syntax

In JavaScript, using the addEventListener() method:

Technical Details

Bubbles:	Yes
Cancelable:	Yes
Event type:	MouseEvent
Supported HTML tags:	All exept: , , , , , , , , , , and

More Examples

Click a to display the date:

Click a element to change the text color:

Click me to change my color.

Another example on how to change the color of an element:

Click me to change my color.

Click to copy text from one input field to another:

function myFunction() document.getElementById(«field2»).value = document.getElementById(«field1»).value;
>

How to assign an «onclick» event to the window object:

function myFunction() document.getElementsByTagName(«BODY»)[0].style.backgroundColor = «yellow»;
>

Use onclick to create a dropdown:

function myFunction() document.getElementById(«myDropdown»).classList.toggle(«show»);
>

Browser Support

onclick is a DOM Level 2 (2001) feature.

It is fully supported in all browsers:

Chrome	Edge	Firefox	Safari	Opera	IE
Yes	Yes	Yes	Yes	Yes	9-11

COLOR PICKER

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