Can props be utilized within a computed property in an alternative manner?
Upon attempting this, it seems to add the class 'foo' (the props name) instead of the intended 'fa-foo' (or a different value if props were configured).
If I directly bind one of them in the markup, both options work.
props: {
foo: {
type: String,
default: 'fa-foo'
}
},
computed: {
classObject: function () {
return {
foo: true,
'text-danger': true
}
}
}
When utilizing the object syntax for class bindings, the key is used as the class name if the value is considered truthy. This means that when the computed prop return value contains { foo: true }, the "foo" class will be applied.
To assign the value of the foo prop as the class name, you can specify this.foo as the key within brackets:
computed: {
classObject: function () {
return {
[this.foo]: true,
'text-danger': true
}
}
}
In addition to objects, class bindings also support arrays of strings and objects. Therefore, the computed prop could alternatively be expressed as follows:
computed: {
classObject: function () {
return [
this.foo,
{
'text-danger': true
}
]
}
}
...or simply as an array of strings:
computed: {
classObject: function () {
return [
this.foo,
'text-danger',
]
}
}
To access the property, you will need to utilize this.foo due to the varying scopes.
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