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bug fixed: add options componentInstance #234

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bug fixed: add options componentInstance #234

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8 changes: 6 additions & 2 deletions src/app.js
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Original file line number Diff line number Diff line change
Expand Up @@ -20,7 +20,11 @@ let Charts = function(opts) {

this.opts = opts;
this.config = config;
this.context = wx.createCanvasContext(opts.canvasId);

// https://mp.weixin.qq.com/debug/wxadoc/dev/api/canvas/create-canvas-context.html
// componentInstance 自定义组件实例 this ，表示在这个自定义组件下查找拥有 canvas-id 的 <canvas/>
// 如果省略，则不在任何自定义组件内查找
this.context = wx.createCanvasContext(opts.canvasId, opts.componentInstance);
// store calcuated chart data
// such as chart point coordinate
this.chartData = {};
Expand Down Expand Up @@ -121,4 +125,4 @@ Charts.prototype.scrollEnd = function (e) {
}
}

export default Charts;
export default Charts;