30秒学会 JavaScript 片段 – castArray

Casts the provided value as an array if it’s not one.

Use Array.prototype.isArray() to determine if val is an array and return it as-is or encapsulated in an array accordingly.

代码片段

const castArray = val => (Array.isArray(val) ? val : [val]);

使用样例

castArray('foo'); // ['foo']
castArray([1]); // [1]