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alignContent alignItems alignSelf animation animationDelay animationDirection animationDuration animationFillMode animationIterationCount animationName animationTimingFunction animationPlayState background backgroundAttachment backgroundColor backgroundImage backgroundPosition backgroundRepeat backgroundClip backgroundOrigin backgroundSize backfaceVisibility border borderBottom borderBottomColor borderBottomLeftRadius borderBottomRightRadius borderBottomStyle borderBottomWidth borderCollapse borderColor borderImage borderImageOutset borderImageRepeat borderImageSlice borderImageSource borderImageWidth borderLeft borderLeftColor borderLeftStyle borderLeftWidth borderRadius borderRight borderRightColor borderRightStyle borderRightWidth borderSpacing borderStyle borderTop borderTopColor borderTopLeftRadius borderTopRightRadius borderTopStyle borderTopWidth borderWidth bottom boxShadow boxSizing captionSide caretColor clear clip color columnCount columnFill columnGap columnRule columnRuleColor columnRuleStyle columnRuleWidth columns columnSpan columnWidth counterIncrement counterReset cssFloat cursor direction display emptyCells filter flex flexBasis flexDirection flexFlow flexGrow flexShrink flexWrap font fontFamily fontSize fontStyle fontVariant fontWeight fontSizeAdjust height isolation justifyContent left letterSpacing lineHeight listStyle listStyleImage listStylePosition listStyleType margin marginBottom marginLeft marginRight marginTop maxHeight maxWidth minHeight minWidth objectFit objectPosition opacity order orphans outline outlineColor outlineOffset outlineStyle outlineWidth overflow overflowX overflowY padding paddingBottom paddingLeft paddingRight paddingTop pageBreakAfter pageBreakBefore pageBreakInside perspective perspectiveOrigin position quotes resize right scrollBehavior tableLayout tabSize textAlign textAlignLast textDecoration textDecorationColor textDecorationLine textDecorationStyle textIndent textOverflow textShadow textTransform top transform transformOrigin transformStyle transition transitionProperty transitionDuration transitionTimingFunction transitionDelay unicodeBidi userSelect verticalAlign visibility width wordBreak wordSpacing wordWrap widows zIndex

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Other References

CSSStyleDeclaration JS Conversion

onclick Event


Execute a JavaScript when a button is clicked:

<button onclick="myFunction()">Click me</button>
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Definition and Usage

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


<element onclick="myScript">
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In JavaScript:

object.onclick = function(){myScript};
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In JavaScript, using the addEventListener() method:

object.addEventListener("click", myScript);
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Technical Details

Bubbles: Yes
Cancelable: Yes
Event type: MouseEvent
HTML tags:
All exept: <base>, <bdo>, <br>, <head>, <html>, <iframe>, <meta>, <param>, <script>, <style>, and <title>

More Examples

Click a <button> to display the date:

<button onclick="getElementById('demo').innerHTML = Date()">What is the time?</button>
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Click a <h3> element to change the text color:

<h3 id="demo" onclick="myFunction()">Click me to change my color.</h3>

function myFunction() {
  document.getElementById("demo").style.color = "red";
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Another example on how to change the color of an element:

<h3 onclick="myFunction(this, 'red')">Click me to change my color.</h3>

function myFunction(element, color) {
  element.style.color = color;
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Click to copy text from one input field to another:

<button onclick="myFunction()">Copy Text</button>

function myFunction() {
  document.getElementById("field2").value =   document.getElementById("field1").value;
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How to assign an "onclick" event to the window object:

window.onclick = myFunction;

  function myFunction() {
document.getElementsByTagName("BODY")[0].style.backgroundColor = "yellow";
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Use onclick to create a dropdown:

document.getElementById("myBtn").onclick = function() {myFunction()};

function myFunction() {
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Related Pages

JavaScript Tutorial: JavaScript Events

HTML DOM reference: ondblclick event

HTML DOM reference: onmousedown event

HTML DOM reference: onmouseup event

Browser Support

onclick is a DOM Level 2 (2001) feature.

It is fully supported in all browsers:

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