Bitovi

Bracket Expression

`[key]`

Evaluates key and looks up the result in the scope.

{{[key]}}

key {Literal Expression|KeyLookup Expression|Call Expression|Helper Expression}:
A Literal, KeyLookup, Call, or Helper expression to evaluate and look up the result in the scope.

Evaluates key and looks up the result in the return value of CALL_EXPRESSION.

{{method()[key]}}

CALL_EXPRESSION {Call Expression|Helper Expression|KeyLookup Expression}:
A Call, Helper, or KeyLookup expression that may or may not return a value.
key {Literal Expression|KeyLookup Expression|Call Expression|Helper Expression}:
A Literal, KeyLookup, Call, or Helper expression to evaluate and look up the result in the result of CALL_EXPRESSION.

A bracket expression can be used to look up a dynamic property in the scope. This looks like:

<!-- Template -->
<h1>{{[key]}}</h1>

{
    key: "name",
    name: "Kevin"
}

<!-- Result -->
<h1>Kevin</h1>

This can be useful for looking up values using keys containing non-alphabetic characters:

<!-- Template -->
<h1>{{["person:"]}}</h1>

{
    "person:name": "Kevin"
}

<!-- Result -->
<h1>Kevin</h1>

Bracket expressions can also be used to look up a value in the result of another expression:

<!-- Template -->
{{getPerson()[key]}}

{
    key: "name",
    getPerson: function() {
        return {
            name: "Kevin"
        };
    }
}

<!-- Result -->
<h1>Kevin</h1>