jBase-2/wiki/EVENTS-Form.md

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2026-05-17 12:39:25 +02:00
* [`submit`](#usage-submit) | [`change`](#usage-change) | [`input`](#usage-input) | [`focus`](#usage-focus) | [`blur`](#usage-blur)
---
## <a id="usage-submit"></a>.submit
**Description**
Bind an event handler to the "submit" JavaScript event, or trigger that event on an element.
**Parameters**
* `handler` (Function, optional): A function to execute when the event is triggered. If omitted, the event is triggered manually.
**Returns**
* (jBase): Current instance.
**Example**
```js
$('#myForm').submit(function(e) {
e.preventDefault();
// Validate form...
});
```
---
## <a id="usage-change"></a>.change
**Description**
Bind an event handler to the "change" JavaScript event (fires when value is committed), or trigger it.
**Parameters**
* `handler` (Function, optional): Function to execute.
**Returns**
* (jBase): Current instance.
**Example**
```js
$('select').change(function() {
console.log('New selection: ' + $(this).val());
});
```
---
## <a id="usage-input"></a>.input
**Description**
Bind an event handler to the "input" JavaScript event (fires immediately when value changes), or trigger it.
**Parameters**
* `handler` (Function, optional): Function to execute.
**Returns**
* (jBase): Current instance.
**Example**
```js
$('#search').input(function() {
console.log('Typing: ' + $(this).val());
});
```
---
## <a id="usage-focus"></a>.focus
**Description**
Bind an event handler to the "focus" JavaScript event, or trigger it.
**Parameters**
* `handler` (Function, optional): Function to execute.
**Returns**
* (jBase): Current instance.
**Example**
```js
$('input').focus(function() {
$(this).addClass('focused');
});
```
---
## <a id="usage-blur"></a>.blur
**Description**
Bind an event handler to the "blur" JavaScript event (lost focus), or trigger it.
**Parameters**
* `handler` (Function, optional): Function to execute.
**Returns**
* (jBase): Current instance.
**Example**
```js
$('input').blur(function() {
$(this).removeClass('focused');
});
```