javascript event wheelDelta
| wheelDelta | NN n/a IE 5.5(Win) DOM n/a |
| Read-only | |
|
Returns an integer indicating which direction the user rolled the mouse wheel (for a mouse equipped with a wheel) during an onmousewheel event. A positive value means the user rolled the wheel toward the screen; a negative value means the opposite direction. |
|
| Example | |
if (evt.wheelDelta > 0) {
...
}
|
|
| Value | |
Integer, typically 120 or -120. |
|
| Default | |
None. |
|
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