What's the meaning of 'trim' when used in mongoose?

Question

I'm a beginner in mongoosejs. I just don't understand why to trim. I'm designing my first schema today like a 'hello world'.

I want to learn more about it. I'm looking for an explanation for a beginner...

Answer 1

The strings that you have saved through the schema are accurately trimmed with the help of the 'trim' parameter. 

If you add trim to a field in your schema, then trying to save texts with spaces like "  qwerty", or "goat ", or " welcome", would now be stored as "qwerty", "goat" and "welcome" in Mongo - which means that the white spaces will be excluded from both sides of the text. The syntax for trim is : 

{ type: String, trim: true }