JS obtains the key value of the left and right mouse keys. js obtains the left and right keys.

JS obtains the key value of the left and right mouse keys. js obtains the left and right keys.

Function test () {alert (event. x + "" + event. y); alert (event. button);}/* The right-click menu does not display */document. oncontextmenu = function () {return false;}/* document. onmousedown = function () {if (event. button = 1) {alert ("left")} if (event. button = 2) {alert ("right")} */document. onkeydown = function () {alert (event. keyCode) ;}</script>

Event. x horizontal mouse axis
Event. y vertical axis of the mouse
Event. keycode keyboard Value
Events. button = 0 by default. No buttons are pressed.
Events. button = 1 left mouse button
Events. button = 2 right-click
Events. button = 3 press the mouse key at the same time
Events. button = 4 middle mouse buttons
Events. button = 5 press both the left mouse button and the middle mouse button
Events. button = 6 Right-click and press
Events. button = 7 all three keys are pressed

How to output the corresponding arrays of key values in JS one by one

Is your code JavaScript?

For key-value pairs, you can use for traversal, for example:
Var person = {name: 'zhangsan', age: 18 };
For (var p in person)
{
Alert (p + ":" + person [p]);
}

Q (js + html) How can I obtain the arrow keys of the keyboard to control the next image?

In js, the method can listen to buttons, and the left and right direction keys also have a key value. You can write a method to determine whether there are left and right keys, if yes, you can use these methods now! Onkeydown!