What questions are asked in front of byte 1, 2 and 3?

One side

4, HTTP cache 5, HTTP status code 6, 403 Do you know, The sum of the paths from the root node to the leaf node in a binary tree adds up to a tree. 11. Extract the Query part of the URL and place it into an object as key-value pairs.

Second interview

1, responsivity principle 2, vuex principle 3, prototype chain 4, event loop output 5, implement a sleep function and forget

On three sides

1, nextTick principle 2, two side sleep function better implementation method… Diff algorithm 4. Prototype chain output 5. Event loop output 6.