Using Regex In View

I have a controller like this: function Ctrl( $scope ){ $scope.str = ' Misty Mountain Hop '; } And a view like this:

{{ str }}

Solution 1:

Since your question was "Why?", the answer is that expressions in interpolation blocks are not JavaScript expressions, but Angular expressions. They look a lot like JavaScript (on purpose), but Angular uses its own parser to parse the code.

That way it can do more than just evaluate the expression once: it can also do things like analyze the dependencies, so it can watch the ingredients and update when those ingredients change. It can also evaluate the expression relative to the $scope, so that {{foo}} returns $scope.foo rather than a global variable called foo (which in turn makes things like ngRepeat work).

When the Angular team implemented Angular expressions, they obviously didn't implement regular expressions. That's not surprising -- that kind of code should be in your controller anyway, where you can test it.

Share

You may like these posts

• 
  How To Create Regex From Any Letter To A Specific Character
• 
  Brackets In Regular Expression
• 
  Regular Expression To Restrict Special Characters
• 
  Javascript Regular Expression To Replace A Sequence Of Chars