dalijs/src/core/directives/DataIf.js

ES6 framework

import {Inject} from '../di/Inject';
import {Directive} from './Directive';
import {Evaluator} from '../evaluator/Evaluator';

@Directive({
  name: 'data-if'
})
@Inject(Evaluator)
export class DataIf {
  constructor(evaluator) {
    this.evaluator = evaluator;
  }

  render(element, data, value) {
    if (!this.evaluator.eval(data, value)) {
      element.parentNode.removeChild(element);
    }
  }
}