Do .show() and .hide() are only able to be called on click?

Question

Do .show() and .hide() are only able to be called on click?

Answer

Not exactly, no, but mainly on events. As we may remember from this lesson, DOM events are interactions between the user and the site as well as browser manipulation, so we do not have to specifically call .show() or .hide() on a click but we do need an event, for example, if we wanted to hide it on a scroll we could say something like:

$(window).on('scroll', () => {
   $('.first-image').hide();
}

or if we wanted to show the image on a keystroke like enter, we could write something like so:

$(window).keydown(( event ) => {
  if ( event.which == 13 ) {
   $('.first-image').show();
  }
});

and we could also use mouse interaction, like hiding the image when the mouse cursor is on the button, and showing it when the mouse cursor has moved away:

 $('.hide-button').mouseenter( () => { 
    $('.first-image').hide(2000);
  });
  
  $('.hide-button').mouseout( () => {
    $('.first-image').show(2000);
  });

.show() and .hide() might need an event, but luckily there are many types of events. other JQuery event listeners are:

mouse *

.click()
Bind an event handler to the “click” JavaScript event, or trigger that event on an element.

.contextmenu()
Bind an event handler to the “contextmenu” JavaScript event, or trigger that event on an element.

.dblclick()
Bind an event handler to the “dblclick” JavaScript event, or trigger that event on an element.

.hover()
Bind one or two handlers to the matched elements, to be executed when the mouse pointer enters and leaves the elements.

.mousedown()
Bind an event handler to the “mousedown” JavaScript event, or trigger that event on an element.

.mouseenter()
Bind an event handler to be fired when the mouse enters an element, or trigger that handler on an element.

.mouseleave()
Bind an event handler to be fired when the mouse leaves an element, or trigger that handler on an element.

.mousemove()
Bind an event handler to the “mousemove” JavaScript event, or trigger that event on an element.

.mouseout()
Bind an event handler to the “mouseout” JavaScript event, or trigger that event on an element.

.mouseover()
Bind an event handler to the “mouseover” JavaScript event, or trigger that event on an element.

.mouseup()
Bind an event handler to the “mouseup” JavaScript event, or trigger that event on an element.

Browser *

.resize()
Bind an event handler to the “resize” JavaScript event, or trigger that event on an element.

.scroll()
Bind an event handler to the “scroll” JavaScript event, or trigger that event on an element.

Event Attachment *

.off()
Remove an event handler.

.on()
Attach an event handler function for one or more events to the selected elements.

.one()
Attach a handler to an event for the elements. The handler is executed at most once per element per event type.

.trigger()
Execute all handlers and behaviors attached to the matched elements for the given event type.

.triggerHandler()
Execute all handlers attached to an element for an event.

Event Objects *

event.currentTarget
The current DOM element within the event bubbling phase.

event.data
An optional object of data passed to an event method when the current executing handler is bound.

Also in: Events
event.delegateTarget
The element where the currently-called jQuery event handler was attached.

event.isDefaultPrevented()
Returns whether event.preventDefault() was ever called on this event object.

event.isImmediatePropagationStopped()
Returns whether event.stopImmediatePropagation() was ever called on this event object.

event.isPropagationStopped()
Returns whether event.stopPropagation() was ever called on this event object.

event.metaKey
Indicates whether the META key was pressed when the event fired.

event.namespace
The namespace specified when the event was triggered.

event.pageX
The mouse position relative to the left edge of the document.

event.pageY
The mouse position relative to the top edge of the document.

event.preventDefault()
If this method is called, the default action of the event will not be triggered.

event.relatedTarget
The other DOM element involved in the event, if any.

event.result
The last value returned by an event handler that was triggered by this event, unless the value was undefined.

event.stopImmediatePropagation()
Keeps the rest of the handlers from being executed and prevents the event from bubbling up the DOM tree.

event.stopPropagation()
Prevents the event from bubbling up the DOM tree, preventing any parent handlers from being notified of the event.

event.target
The DOM element that initiated the event.

event.timeStamp
The difference in milliseconds between the time the browser created the event and January 1, 1970.

event.type
Describes the nature of the event.

event.which
For key or mouse events, this property indicates the specific key or button that was pressed.

Forms *

.blur()
Bind an event handler to the “blur” JavaScript event, or trigger that event on an element.

.change()
Bind an event handler to the “change” JavaScript event, or trigger that event on an element.

.focus()
Bind an event handler to the “focus” JavaScript event, or trigger that event on an element.

.focusin()
Bind an event handler to the “focusin” event.

.focusout()
Bind an event handler to the “focusout” JavaScript event.

.select()
Bind an event handler to the “select” JavaScript event, or trigger that event on an element.

.submit()
Bind an event handler to the “submit” JavaScript event, or trigger that event on an element.

Keyboard *

.keydown()
Bind an event handler to the “keydown” JavaScript event, or trigger that event on an element.

.keypress()
Bind an event handler to the “keypress” JavaScript event, or trigger that event on an element.

.keyup()
Bind an event handler to the “keyup” JavaScript event, or trigger that event on an element.


*sourced from the JQuery documentation

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