Angular lazy one-time binding for expressions
angularjs, binding, javascript, lazy-evaluation
Solution
Yes. You can prefix every expressions with `::`, even the ones in `ngIf` or `ngClass`:
<div ng-if="::(user.isSomething && user.isSomethingElse)"></div>
<div ng-class="::{classNameFoo: user.isSomething}"></div>
Actually, the code simply checks that the two first characters in the expression are `:` in order to activate the one-time binding (and then removes them, thus the parenthesis aren't even needed). Everything else remains the same.
Problem
AngularJS has a new feature since the version 1.3.0-beta.10: the "lazy one-time binding". Simple expressions can be prefixed with `::`, telling angular to stop watching after the expression was first evaluated. The common example given is something like: ``` <div>{{::user.name}}</div> ``` Is there a similar syntax for expressions like the following ones? ``` <div ng-if="user.isSomething && user.isSomethingElse"></div> <div ng-class="{classNameFoo: user.isSomething}"></div> ```