var canvas = document.getElementById('php100'); var p100=canvas.getContext("2d"); p100.lineWidth=5; //定义线条宽度 p100.strokeStyle=“red”; //定义线条颜色 p100.moveTo(mouseX,mouseY); //起始位置 p100.lineTo(mouseX,mouseY); //终止位置 p100.stroke(); //结束图形 $( ).mousedown //鼠标按下时 $( ).mousemove //鼠标移动时 $( ).mouseup //鼠标抬起时 $("#php100").mousedown(function(e){ var mouseX = e.pageX - this.offsetLeft; //获得区域坐标x var mouseY = e.pageY - this.offsetTop; //获得区域坐标y }); 此教程由php100提供 下载地址 点击下载 源码下载: |
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