unresolved function or method fetch()

[weixin_40286844]

WebStorm里面提示unresolved function or method fetch()怎么解决，求大神解决

[斯洛文尼亚旅游]

https://stackoverflow.com/questions/20136714/how-can-i-fix-webstorm-warning-unresolved-function-or-method-for-require-fi https://stackoverflow.com/questions/21616683/phpstorm-unresolved-function-or-method

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[weixin_40286844]

这样有什么问题么？，fetch函数为什么不能用啊？