what's the difference between "I don't have..." and "I have no..."?

Question

Answer

I have no idea........it means I dont know......I suppose that if you use " I have no" and it could emphasize the noun .

Answer

I am not quite sure about this, but I do not think one is able using "I have no time"
in a formal British English document. "I have got no time" should be the original phrase.
 
Spoken English, in particular American English, often left out words unspoken.   
LOL, I have got no idea.

Answer

No as a determiner.
 
We have no grammar exercises, no boring English classes.
The sentence is invalid: I have no grammar found.
I have no cigarettes left.

Not makes a verb „have“ negative.

They do not have a shouder in the morning. 
You don't need to work on weekends, because the office is closed.

Note: No and not are never used in the same sentence.

Answer

just 俚语。

Answer

'I don't have' is the correct way to say you are lacking something

'I have no' is really grammatically incorrect, though English speakers will still use it. I can't think of an exception, though someone my prove me wrong.

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