backbone/validation-complex-new.html at master · netsider/backbone · GitHub

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<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <title></title>
</head>
<body>
  <script src="jquery-1.11.2.js"></script>
  <script src="underscore.js"></script>
  <script src="backbone.js"></script>
  <script>
  var myTodo = new Backbone.Model({completed: false});
	myTodo.validate = function(attrs) {

  if(attrs) {
  console.log("Validation Called!1");
  console.log(attrs);
    return 'Valid';
  }
    if(!attrs) {
    console.log("Validation Called!2");
	return 'inValid';
  }
  if(attrs === true) {
    console.log("Validation Called!3");
	return 'Valid';
  }
  if(attrs === false) {
    console.log("Validation Called!4");
	return 'Valid';
  }
};
	myTodo.set({completed: true}, {validate: true});// logs: Remember to set a title for your todo
	//myTodo.set('completed', true, {validate: true}); // logs: Remember to set a title for your todo.
	console.log('completed: ' + myTodo.get('completed')); // completed: false
	//myTodo.set({name: 'Samuel'}, {validate: true});// logs: Remember to set a title for your todo.

</script>
</body>
</html>