Convert the children array to a one-bit array

The array format is tree children format

//The array is flattened into an array and implemented recursivelyfunction flatten(checkData){// The map function is to traverse// ...The three dots indicate that the checkData and flatten objects are spread all over and get all their attributes, or you can get a certain attribute, you can modify the item in the concat, such as item.title//Then overwrite the existing attributes with the ones we passed.//This propagation can be thought of as extracting all the individual properties one by one and passing them to the new object.return [].concat(...checkData.map(item => [].concat(item, ...flatten(item.children))));}

Call this function to pass the parameters of the array that needs to be converted.

checkData = flatten(checkData);