$observe(key, fn);
Observes an interpolated attribute.
The observer function will be invoked once during the next $digest
following compilation. The observer is then invoked whenever the interpolated value changes.
Parameters
Param | Type | Details |
---|---|---|
key | string | Normalized key. (ie ngAttribute) . |
fn | function(interpolatedValue) | Function that will be called whenever the interpolated value of the attribute changes. See the Interpolation guide for more info. |
Returns
function() |
Returns a deregistration function for this observer. |
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