New Twiddle

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName: 'Ember Twiddle',
  maxlength: undefined,
  size: undefined,
  actions: {
    setValues: function() {
     this.setProperties({
       maxlength: 5,
       size: 30
     });
    },
    setUndefined: function() {
     this.setProperties({
       maxlength: undefined,
       size: undefined
     });
    }
  }
});

templates.application.hbs

<h3>This demonstrates a possible bug with the input helper</h3>

<hr />

{{input type='text' maxlength=maxlength size=size}}

<hr />

<button {{action 'setValues'}}>1 Set values</button><br />
<button {{action 'setUndefined'}}>2 Set undefined</button>(will raise <span style="background-color: yellow">`Uncaught IndexSizeError: Failed to set the 'size' property on 'HTMLInputElement': The value provided is 0, which is an invalid size.`</span>, see console)

<hr />

maxlength={{maxlength}}, size={{size}}

twiddle.json

{
  "version": "0.7.1",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "https://cdnjs.cloudflare.com/ajax/libs/ember.js/2.4.3/ember.debug.js",
    "ember-data": "https://cdnjs.cloudflare.com/ajax/libs/ember-data.js/2.4.3/ember-data.js",
    "ember-template-compiler": "https://cdnjs.cloudflare.com/ajax/libs/ember.js/2.4.3/ember-template-compiler.js"
  }
}