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JavaScript HTML DOM Events Examples

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Examples of using JavaScript to react to events

Input Events

onblur - When a user leaves an input field
onchange - When a user changes the content of an input field
onchange - When a user selects a dropdown value
onfocus - When an input field gets focus
onselect - When input text is selected
onsubmit - When a user clicks the submit button
onreset - When a user clicks the reset button
onkeydown - When a user is pressing/holding down a key
onkeypress - When a user is pressing/holding down a key
onkeyup - When the user releases a key
onkeyup - When the user releases a key
onkeydown vs onkeyup - Both

Mouse Events

onmouseover/onmouseout - When the mouse passes over an element
onmousedown/onmouseup - When pressing/releasing a mouse button
onmousedown - When mouse is clicked: Alert which element
onmousedown - When mouse is clicked: Alert which button
onmousemove/onmouseout - When moving the mouse pointer over/out of an image
onmouseover/onmouseout - When moving the mouse over/out of an image
onmouseover an image map

Click Events

Acting to the onclick event
onclick - When button is clicked
ondblclick - When a text is double-clicked

Load Events

onload - When the page has been loaded
onload - When an image has been loaded
onerror - When an error occurs when loading an image
onunload - When the browser closes the document
onresize - When the browser window is resized

Others

What is the keycode of the key pressed?
What are the coordinates of the cursor?
What are the coordinates of the cursor, relative to the screen?
Was the shift key pressed?
Which event type occurred?

Examples explained


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