regex - HTML5 input pattern search for quote

Question

I need to test an input field (<input type="text" />) against this regex:

[^'"]+

This obviously is no easy task as I cannot use " inside the attribute. Using the quot entity does not seem to work as it gets interpreted literally by the regex engine.

How can I accomplish this?

Answer 1

The HTML5 @pattern attribute regex is based on JavaScript regex, so you can use hexadecimal notation or unicode notation for that char as you would in JavaScript:

" = x22 OR u0022
' = x27 OR u0027

So that you can easily use

pattern="[^'x22]+"

TADA! No JavaScript libraries involved! ;)