javascript replace characters

I want to 开发者_运维百科replace all occurent of "-", ":" characters and spaces from a string that appears in this format:

"YYYY-MM-DD HH:MM:SS"

something like:

var date = this.value.replace(/:-/g, "");

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You were close: "YYYY-MM-DD HH:MM:SS".replace(/:|-/g, "")

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/:-/g means ":" followed by "-". If you put the characters in [] it means ":" or "-".

var date = this.value.replace(/[:-]/g, "");

If you want to remove spaces, add \s to the regex.

var date = this.value.replace(/[\s:-]/g, "");

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The regex you want is probably:

/[\s:-]/g

Example of usage:

"YYY-MM-DD HH:MM:SS".replace(/[\s:-]/g, '');

[] blocks match any of the contained characters.

Within it I added the \s pattern that matches space characters such as a space and a tab \t (not sure if you want tabs and newlines, so i went with tabs and skipped newlines).

It seems you already guessed that you want the global match which allows the regex to keep replacing matches it finds.

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You can use either a character class or an | (or):

var date = "YYYY-MM-DD HH:MM:SS".replace(/[:-\s]/g, '');

var date = "YYYY-MM-DD HH:MM:SS".replace(/:|-|\s/g, '');