请问一下各位，之前有createCanvasContext相关的指令，现在要怎么切换为canvas？
之前的代码如下：
const ctx = wx.createCanvasContext("scene");
ctx.drawImage(uploadData.tempFilePaths[0], 0, 0)
ctx.draw()
相关问题
相关文档
- wx.createCanvasContext: 小程序/开发/API/画布/wx.createCanvasContext
- wx.createCanvasContext#功能描述: 小程序/开发/API/画布/wx.createCanvasContext
- wx.createCanvasContext#参数: 小程序/开发/API/画布/wx.createCanvasContext
- wx.createCanvasContext#返回值: 小程序/开发/API/画布/wx.createCanvasContext
- Canvas.getContext: 小程序/开发/API/画布/Canvas/Canvas.getContext
<canvas class="contents-signCanvas" disable-scroll="true" canvas-id="signCanvas" id="signCanvas"
type="2d" @touchmove="move" @touchstart="start($event)" @touchend="end" @mousedown="mouseDown"
@mousemove="move" @mouseout="mouseOut" @mouseup="mouseUp"></canvas>
wx.createSelectorQuery().select('#signCanvas').fields({
size: true,node: true}).exec((res) => {
console.log(res, 'reeeeeeeeeee')
})
获取exec返回的res时有问题，res是[null]，有人遇到过吗？
麻烦问一下，楼主搞好了吗
参考文档 https://developers.weixin.qq.com/miniprogram/dev/api/canvas/Canvas.html
类似H5的原生写法
可以参考这个文档
https://developers.weixin.qq.com/community/develop/article/doc/0000a6593d8f38898dbb4f2cc54413