angularjs directive not working

js 

app.directive('onlyLabelName', function($http) {

......

}

html

<input onlyLabelName><input>

when I open AngularJS websites(https://docs.angularjs.org/guide/directive),I see information on below:

The normalization process is as follows:

Strip x- and data- from the front of the element/attributes.
Convert the :, -, or _-delimited name to camelCase.





So,I  need change onlyLabelName to only-label-name