Jsdelete usage (delete object attributes and variables)

Jsdelete can delete object attributes and variables. The following are some examples. If you are interested, you can see 1. Delete object attributes.

Function fun () {this. name = 'mm';} var obj = new fun (); console. log (obj. name); // mm delete obj. name; console. log (obj. name); // undefined

2. delete variables

Var name = 'lily'; delete name; console. log (name); // lily

Variables cannot be deleted directly using delelte

3. the variables in the prototype chain cannot be deleted.

Fun. prototype. age = 18; delete obj. age; console. log (obj. age) // 18

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