Expressions

If a directive requires a value, it will be anexpression.

In the JavaScript language, expressions are small, evaluable statements that produce a single value. Expressions can be used wherever a value is expected, for example in the parenthesis of anifstatement:

if (expression) {
  ...
}

The expression here could be any of the following:

• A mathematical expression, for examplex + 7
• A comparison, for examplev <= 7
• A Vuedataproperty, for examplethis.myval

Directives and text interpolations both accept expression values:

<p v-dir="someExpression">{{ firstName + " " + lastName }}</p>