Javascript - How many arguments are there for confirm?

How many arguments are there for confirm box?

What does var del=confirm("Are you sure?","Delete","开发者_开发百科"); mean?

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It has a single argument which represents the text. In your example the last two arguments will be ignored. I suppose it is a failed attempt to personalize the buttons.

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Only the first is meaningful. Any subsequent ones are ignored.

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use this only ....

var del=confirm("Are you sure?");

else must be ignored.....this is the default feature in confirm box... that show "ok" and "cancel" by its own

and this will return true..if "ok" clicked.. and rteurn false...if "cancel " clicked

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confirm accepts only one argument:

var ans=confirm('Your message');

It will display your message with OK and Cancel buttons.