javascript - Is it possible to get negative coordinates for mouse movement -

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i using function mouse location. receiving negative values logs. not able find scenario in function return negative values.

function mousemovetracker(event) {     var dot, eventdoc, doc, body, pagex, pagey;     event = event || window.event;      if (event.pagex == null && event.clientx != null) {         eventdoc = event.target && event.target.ownerdocument || document;         doc = eventdoc.documentelement;         body = eventdoc.body;          event.pagex =              event.clientx +              (doc && doc.scrollleft || body &&   body.scrollleft || 0) -             (doc && doc.clientleft || body && body.clientleft || 0);          event.pagey =             event.clienty +             (doc && doc.scrolltop || body && body.scrolltop || 0) -             (doc && doc.clienttop || body && body.clienttop || 0);     }      var mm = {x: event.pagex, y: event.pagey, time: date.now()}; }

try this

var x; var y; if (e.pagex || e.pagey) {    x = e.pagex;   y = e.pagey; } else {    x = e.clientx + document.body.scrollleft + document.documentelement.scrollleft;    y = e.clienty + document.body.scrolltop + document.documentelement.scrolltop;  }  x -= gcanvaselement.offsetleft; y -= gcanvaselement.offsettop;

hope helps !


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