[已解决]wx.base64ToArrayBuffer总是报错thirdScriptErr

时间：2019-05-07 来源：小程序工厂

问题模块框架类型问题类型 API/组件名称终端类型微信版本基础库版本
API和组件微信小程序 Bug wx.base64ToArrayBuffer 工具 2.0.4 2.0.4

就这样两行代码就报错了，

这是后台接口返回的base64位的数据，既res.data.img的数据

"/9j/4AAQSkZJRgABAgAAAQABAAD/2wBDAAgGBgcGBQgHBwcJCQgKDBQNDAsLDBkSEw8UHRofHh0a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"
代码片段
wx.base64ToArrayBuffer

微信小程序开发问题解答

微信小程序开发者回答：

你贴出来的 base64 格式不太对，可以用在线的工具解码试试，可能要你们后台自查一下啦

微信小程序开发者回答：

没错，只是没有加 data:image/png;base64, 开头，在微信小程序还是显示不出来

微信小程序开发者回答：

不是开头的问题，你贴出来的 base64 确实有问题，没法解出图片。你可以用各种在线工具试一下

微信小程序开发者回答：

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GscB+zREtHkk7h0JHY+1FFHRB1Z//9k=

用这个，这个是接口输出的数据，经过
wx.base64ToArrayBuffer(data) 就报错了

微信小程序开发者回答：

测试没有复现错误噢，测试用例：wechatide://minicode/I07iX2mU7m39

微信小程序开发者回答：

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