我想获取我单击的画布的 ID,但是使用我编写的代码,我总是得到最后一个画布的 ID。是否有可能获得多维数组的值?我应该把 onclick 事件放在开关盒中吗?
function drawFigures(figures) {
var frontDiv = document.createElement("div");
frontDiv.setAttribute("id","frontDiv");
document.getElementById('game').appendChild(frontDiv);
for(var y=0; y<figures.length; y++) {
fieldDiv = document.createElement("div");
fieldDiv.setAttribute("class", "figureFieldDiv");
frontDiv.appendChild(fieldDiv);
for(var x=0; x<figures[y].length; x++) {
var canvas = document.createElement("canvas");
canvas.setAttribute("id", y+","+x);
canvas.width = 20;
canvas.height = 20;
var ctx = canvas.getContext('2d');
fieldDiv.appendChild(canvas);
document.getElementById(y+","+x).onclick = function() {console.log(y+","+x)}, false;
switch(figures[y][x]) {
case 0:
break;
case 1:
ctx.fillStyle = "#F00";
ctx.arc(canvas.width/3,canvas.width/3,canvas.width/3,0,360);
ctx.fill();
break;
case 2:
ctx.fillStyle = "#0F0";
ctx.arc(canvas.width/3,canvas.width/3,canvas.width/3,0,360);
ctx.fill();
break;
case 3:
ctx.fillStyle = "#FF0";
ctx.arc(canvas.width/3,canvas.width/3,canvas.width/3,0,360);
ctx.fill();
break;
case 4:
ctx.fillStyle = "#00F";
ctx.arc(canvas.width/3,canvas.width/3,canvas.width/3,0,360);
ctx.fill();
break;
case 5:
break;
case 6:
ctx.fillStyle = "#0FF";
ctx.arc(canvas.width/3,canvas.width/3,canvas.width/3,0,360);
ctx.fill();
break;
case 7:
break;
}
}
}
}