如何使用Javascript检查当前鼠标按钮状态 [英] How to check the current mouse button state Using Javascript

问题描述

我希望鼠标处于关闭状态或关闭状态

document.onmousemove = mouseMove;
document.onmousedown = mouseDown;
document.onmouseup   = mouseUp;

function mouseMove(ev) {

    mouseState="";
    //How can I know the state button of mouse button from here 
    if(mouseState=='down') {
        console.log('mouse down state')
    }

    if(mouseState=='up')  {
        console.log('mouse up state')
    }
}

function mouseDown(ev) {
    console.log('Down State you can now start dragging');
    //do not write any code here in this function
}

function mouseUp(ev) {
    console.log('up state you cannot drag now because you are not holding your mouse')
    //do not write any code here in this function
} 

当我移动鼠标时，程序应该在控制台上显示所需的鼠标状态值，现在

When I moved my mouse, program should show the required value of mouseState up or down on console for now

推荐答案

您可以查看 MouseEvent.which 属性。

function mouseMove(ev) {
    if(ev.which==1) {
        console.log('mouse down state with left click');
    } else if(ev.which==3)  {
        console.log('mouse down state with right click');
    } else {
        console.log('mouse update');
    } 
}

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