onclick Event

2024.10.04 11:29

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JavaScript

JS Arrays Array[ ] Array( ) at() concat() constructor copyWithin() entries() every() fill() filter() find() findIndex() findLast() findLastIndex() flat() flatMap() forEach() from() includes() indexOf() isArray() join() keys() lastIndexOf() length map() of() pop() prototype push() reduce() reduceRight() reverse() shift() slice() some() sort() splice() toReversed() toSorted() toSpliced() toString() unshift() values() valueOf() with() JS Boolean constructor prototype toString() valueOf() JS Classes constructor() extends static super JS Dates new Date() constructor getDate() getDay() getFullYear() getHours() getMilliseconds() getMinutes() getMonth() getSeconds() getTime() getTimezoneOffset() getUTCDate() getUTCDay() getUTCFullYear() getUTCHours() getUTCMilliseconds() getUTCMinutes() getUTCMonth() getUTCSeconds() now() parse() prototype setDate() setFullYear() setHours() setMilliseconds() setMinutes() setMonth() setSeconds() setTime() setUTCDate() setUTCFullYear() setUTCHours() setUTCMilliseconds() setUTCMinutes() setUTCMonth() setUTCSeconds() toDateString() toISOString() toJSON() toLocaleDateString() toLocaleTimeString() toLocaleString() toString() toTimeString() toUTCString() UTC() valueOf() JS Error name message JS Global decodeURI() decodeURIComponent() encodeURI() encodeURIComponent() escape() eval() Infinity isFinite() isNaN() NaN Number() parseFloat() parseInt() String() undefined unescape() JS JSON parse() stringify() JS Maps new Map clear() delete() entries() forEach() get() groupBy() has() keys() set() size values() JS Math abs() acos() acosh() asin() asinh() atan() atan2() atanh() cbrt() ceil() clz32() cos() cosh() E exp() expm1() floor() fround() LN2 LN10 log() log10() log1p() log2() LOG2E LOG10E max() min() PI pow() random() round() sign() sin() sinh() sqrt() SQRT1_2 SQRT2 tan() tanh() trunc() JS Numbers constructor EPSILON isFinite() isInteger() isNaN() isSafeInteger() MAX_SAFE_INTEGER MIN_SAFE_INTEGER MAX_VALUE MIN_VALUE NaN NEGATIVE_INFINITY POSITIVE_INFINITY parseFloat() parseInt() prototype toExponential() toFixed() toLocaleString() toPrecision() toString() valueOf() JS Objects assign() constructor create() defineProperties() defineProperty() entries() freeze() fromEntries() getOwnPropertyDescriptor() getOwnPropertyDescriptors() getOwnPropertyNames() groupBy() isExtensible() isFrozen() isSealed() keys() preventExtensions() prototype seal() toString() valueOf() values() JS Operators JS Precedence JS Promises all() allSettled() any() catch() finally() race() reject() resolve() then() JS RegExp Modifiers: g i d m Groups: [abc] [^abc] [0-9] [^0-9] (x|y) Metacharacters: . \w \W \d \D \s \S \b \B \0 \n \f \r \t \v \xxx \xdd \uxxxx Quantifiers: + * ? {X} {X,Y} {X,} $ ^ ?= ?! Properties: constructor global ignoreCase lastIndex multiline source Methods: compile() exec() test() toString() JS Sets new Set add() clear() delete() entries() forEach() has() keys() size values() JS Statements break class const continue debugger do while for for in for of function if else let return switch throw try catch var while JS Strings at() charAt() charCodeAt() codePointAt() concat() constructor endsWith() fromCharCode() includes() indexOf() lastIndexOf() length localeCompare() match() padEnd() padStart() prototype repeat() replace() replaceAll() search() slice() split() startsWith() substr() substring() toLocaleLowerCase() toLocaleUpperCase() toLowerCase() toString() toUpperCase() trim() trimEnd() trimStart() valueOf() JS TypedArray

Window

Window Object addeventlistener() alert() atob() blur() btoa() clearInterval() clearTimeout() close() closed confirm() console defaultStatus document focus() frameElement frames history getComputedStyle() innerHeight innerWidth length localStorage location matchMedia() moveBy() moveTo() name navigator open() opener outerHeight outerWidth pageXOffset pageYOffset parent print() prompt() removeEventlistener() resizeBy() resizeTo() screen screenLeft screenTop screenX screenY scrollBy() scrollTo() scrollX scrollY sessionStorage self setInterval() setTimeout() status stop() top Window Console assert() clear() count() error() group() groupCollapsed() groupEnd() info() log() table() time() timeEnd() trace() warn() Window History back() forward() go() length Window Location assign() hash host hostname href origin pathname port protocol reload() replace() search Window Navigator appCodeName appName appVersion cookieEnabled geolocation javaEnabled() language onLine platform product taintEnabled() userAgent Window Screen availHeight availWidth colorDepth height pixelDepth width

HTML DOM

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HTML Events

HTML Events abort afterprint animationend animationiteration animationstart beforeprint beforeunload blur canplay canplaythrough change click contextmenu copy cut dblclick drag dragend dragenter dragleave dragover dragstart drop durationchange ended error focus focusin focusout fullscreenchange fullscreenerror hashchange input invalid keydown keypress keyup load loadeddata loadedmetadata loadstart message mousedown mouseenter mouseleave mousemove mouseover mouseout mouseup offline online open pagehide pageshow paste pause play playing progress ratechange resize reset scroll search seeked seeking select show stalled submit suspend timeupdate toggle touchcancel touchend touchmove touchstart transitionend unload volumechange waiting wheel HTML Event Objects Animation Events Clipboard Events Drag Events Events Focus Events HashChange Events Input Events Keyboard Events Mouse Events PageTransition Events PopState Events Progress Events Storage Events Touch Events Transition Events Ui Events Wheel Events HTML Event Properties altKey (Mouse) altKey (Key) animationName bubbles button buttons cancelable charCode clientX clientY code ctrlKey (Mouse) ctrlKey (Key) currentTarget data defaultPrevented deltaX deltaY deltaZ deltaMode detail elapsedTime elapsedTime eventPhase inputType isTrusted key keyCode location metaKey (Mouse) metaKey (Key) newURL oldURL offsetX offsetY pageX pageY persisted propertyName relatedTarget relatedTarget screenX screenY shiftKey (Mouse) shiftKey (Key) target targetTouches timeStamp touches type which (Mouse) which (Key) view HTML Event Methods getModifierState() preventDefault() stopImmidiatePropagation() stopPropagation()

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a abbr address area article aside audio b base bdo blockquote body br button canvas caption cite code col colgroup datalist dd del details dfn dialog div dl dt em embed fieldset figcaption figure footer form head header h1 - h6 hr html i iframe img ins input button input checkbox input color input date input datetime input datetime-local input email input file input hidden input image input month input number input password input radio input range input reset input search input submit input text input time input url input week kbd label legend li link map mark menu menuitem meta meter nav object ol optgroup option output p param pre progress q s samp script section select small source span strong style sub summary sup table tbody td tfoot th thead tr textarea time title track u ul var video

Other References

CSSStyleDeclaration cssText getPropertyPriority() getPropertyValue() item() length parentRule removeProperty() setProperty() JS Conversion

onclick Event

❮ Previous Events Reference Next ❯

Example

Call a function when a button is clicked:

button onclick= myFunction() Click me /button Try it Yourself

More examples below.

Description

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:

The Mouse Event Object

Tutorial:

JavaScript Events

Syntax

In HTML:

element onclick= myScript Try it Yourself

In JavaScript:

object .onclick = function(){ myScript }; Try it Yourself

In JavaScript, using the addEventListener() method:

object .addEventListener( click , myScript ); Try it Yourself

Technical Details

Bubbles: Yes Cancelable: Yes Event type: MouseEvent Supported
HTML tags: All except: 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
Try it Yourself

Click a h3 element to change the text color:

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

script
function myFunction() {
document.getElementById( demo ).style.color = red ;
}
/script
Try it Yourself

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

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

script
function myFunction(element, color) {
element.style.color = color;
}
/script
Try it Yourself

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;
}
/script
Try it Yourself

How to assign an "onclick" event to the window object:

window.onclick = myFunction;

function myFunction() {
document.getElementsByTagName( BODY )[0].style.backgroundColor = yellow ;
}
Try it Yourself

Use onclick to create a dropdown:

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

function myFunction() {
document.getElementById( myDropdown ).classList.toggle( show );
}
Try it Yourself

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

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