<canvas canvas-id="myCanvas"></canvas>

/**

  * 组件的生命周期

  */

lifetimes: {

    created() {

        this.paint()

    }

},

methods: {

    paint() {

        const ctx = wx.createCanvasContext('myCanvas')

        ctx.setFillStyle("#EB0000")

        ctx.setFontSize(10)

        ctx.fillText('￥',10,84)

        ctx.draw()

    }

}