Question

我尝试了下面的代码片段，但是我在警告中未定义我在哪里访问此Coords.t1，有人可以指导我吗？

<!--fabric js function to get coordinates of active object-->
    function getCoords(oCoords) {
        return {
          tl: new fabric.Point(oCoords.tl.x, oCoords.tl.y),
          tr: new fabric.Point(oCoords.tr.x, oCoords.tr.y),
          bl: new fabric.Point(oCoords.bl.x, oCoords.bl.y),
          br: new fabric.Point(oCoords.br.x, oCoords.br.y)
        }
      }

<!--fabric js mouse move event-->
    canvas.on('mouse:move', function(e){
    console.log('over1',e.target)
    if(e.target && e.target !== canvas.getActiveObject())
     canvas.setActiveObject(e.target)
     var thisCoords = getCoords(canvas.getActiveObject().oCoords);
     alert("coords :"+thisCoords.t1);
    });

Answer 1

getCoords函数返回一个带有键tl, tr, bl, br的对象。您正在尝试访问密钥t1，这肯定是一个错字。只需将alert("coords :"+thisCoords.t1);替换为alert("coords :"+thisCoords.tl);

即可

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