Is it accurate to use one-time binding for a ternary condition within the data-ng-bind directive?
<span data-ng-bind="::model.boolean ? 'json.item.value1' : 'json.item.value2'"></span>
or
<span data-ng-bind="::(model.boolean ? 'json.item.value1' : 'json.item.value2')"></span>
Absolutely. The entire expression, no matter its complexity, will be processed and interpreted just once.
Internally, the process can be likened to the following code snippet:
// If not already assigned
value = $parse("model.boolean ? 'json.item.value1' : 'json.item.value2'")(scope)
Important: When model.boolean evaluates as true, you will only witness the literal string "json.item.value1" rather than its actual value. To access the real value, the single quotes ' must be removed, transforming the expression into:
<span data-ng-bind="::model.boolean ? json.item.value1 : json.item.value2"></span>
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