How do I dynamically check if a particular icon exists in an icon font set using Javascript?

Question

我正在构建一个带有自定义图标字体的 React Native 应用程序，我需要能够显示默认图标而不是问号，其中特定图标不存在或在自定义图标字体集中丢失，这是否可能?

Answer 1

There's a hasIcon function shipped with react-native-vector-icons that will return a boolean on if the value passed into the function is present in the icon set.

See documentation here: Static methods