How to get the coordinates of the mouse in JS

CopyCode The Code is as follows: var X, Y;

// When the requirement is that the obtained coordinate value is relative to the body, use:

Function positionbody (event ){

Event = event | window. event;

// Obtain the horizontal value relative to the body position;

X = event. clientx

// Obtain the vertical value relative to the positioning of the body;

Y = event. clienty

}

// When the requirement is that the obtained coordinate value is relative to an object, use:

Function positionobj (event, ID ){

// Obtain the abscissa value of the object relative to the page. The ID is the ID of the object.

VaR thisx = Document. getelementbyid (ID). offsetleft;

// Obtain the abscissa value of the object relative to the page;

VaR thisy = Document. getelementbyid (ID). offsettop;

// Obtain the Page scrolling distance;

// Note: document.doc umentelement. scrolltop supports non-Google kernels, and document. Body. scrolltop supports Google kernels.

VaR thisscrolltop = document.doc umentelement. scrolltop + document. Body. scrolltop;

Event = event | window. event;

// Obtain the abscissa value relative to the object positioning = the abscissa value of the current page relative to the mouse-the abscissa value of the object;

X = event. clientx-thisx;

// Obtain the vertical value relative to the object positioning = the vertical coordinate value of the current mouse relative to the page-the object vertical coordinate value + the scroll height of the scroll bar;

Y = event. clienty-thisy + thisscrolltop;

}