Canvas中用jQuery获取到的对象无法使用getContext

Posted 2021-05-07 tomatofjy

window.onload=function(){
    var canvas=document.getElementById("draw");
    //$("#draw")不可用
    var context=canvas.getContext("2d");
    context.moveTo(10,10);
    context.lineTo(100,100);
    context.stroke();
}