1. how to input formative json data in console

console.log({
  "message": [
    {
      "cat_id": 1,
      "cat_name": "大家电",
      "cat_pid": 0,
      "cat_level": 0,
      "cat_deleted": false,
      ,,,
      })

2) how to clear unecessary content on Browser console

clear();

3. At browser console, how to jump to another line without terminate the code;
   press Shift & Enter altogether at the same time;