In the Vue project, a common method split () is encountered. Because it is common and easy to remember, split (”) is recorded here,

The string is cut into an array with spaces as boundaries. Parameters can be written in quotation marks,

For example, split (‘,  ‘) ， This is to   , Cut bounds into arrays

  However, when converting a string into an array, an error will be reported if the string is empty

  In case of the above errors, you can judge first