# 9. Learn backbone.js tutorial from scratch for beginners(Part 12) Model Events in backbone.js

![](/files/-MS3dcRmvGhquGGkrayB)

![](/files/-MS3ejG8l0nfAR6Jn6G_)

C:\Users\Administrator\Desktop\gulp\app.js

```
jQuery(document).ready(function($) {
  var FirstModel = Backbone.Model.extend({
    initialize: function() {
      
    }
  });
  fmodel = new FirstModel();
  fmodel.set({
  	name: "<p>Tuong</p>",
  	author: "Lionel Pham"
  });
  var ModelView = Backbone.View.extend({
  	model: fmodel,
  	initialize: function() {
  		this.render();
  	},
  	render: function() {
  		console.log(this.model.escape("name"));
  		console.log(this.model.get("name"));
  		console.log(this.model.toJSON());
  	}
  });
  vmodel = new ModelView();
});
```

![](/files/-MS3fppZPx6p5CzajySq)

C:\Users\Administrator\Desktop\gulp\app.js

```
jQuery(document).ready(function($) {
  var FirstModel = Backbone.Model.extend({
    initialize: function() {
      
    }
  });
  fmodel = new FirstModel();
  fmodel.set({
  	name: "<p>Tuong</p>",
  	author: "Lionel Pham"
  });
  var ModelView = Backbone.View.extend({
  	model: fmodel,
  	initialize: function() {
  		this.render();
  	},
  	render: function() {
  		if(this.model.has("name")) {
  			console.log("Has key");
  		}else {
  			console.log("Has't key");
  		}
  		this.model.unset("name");
  		console.log(this.model.toJSON());
  	}
  });
  vmodel = new ModelView();
});
```

![](/files/-MS3g74Omy2ePPY-_7ft)

C:\Users\Administrator\Desktop\gulp\app.js

```
jQuery(document).ready(function($) {
  var FirstModel = Backbone.Model.extend({
    initialize: function() {
      
    }
  });
  fmodel = new FirstModel();
  fmodel.set({
  	name: "<p>Tuong</p>",
  	author: "Lionel Pham"
  });
  var ModelView = Backbone.View.extend({
  	model: fmodel,
  	initialize: function() {
  		this.render();
  	},
  	render: function() {
  		if(this.model.has("name")) {
  			console.log("Has key");
  		}else {
  			console.log("Has't key");
  		}
  		// this.model.unset("name");
  		this.model.clear("name");
  		console.log(this.model.toJSON());
  	}
  });
  vmodel = new ModelView();
});
```

![](/files/-MS3hcOquu16tXB0tFYy)

```
jQuery(document).ready(function($) {
  var FirstModel = Backbone.Model.extend({
  	defaults: {
    	name: 'first',
    	author: 'Default Author', 
    },
    initialize: function() {
      
    }
  });
  fmodel = new FirstModel({
  	
  });
  fmodel.set({
  	name: "<p>Tuong</p>"
  });
  var ModelView = Backbone.View.extend({
  	model: fmodel,
  	initialize: function() {
  		this.render();
  	},
  	render: function() {
  		console.log(this.model.toJSON());
  	}
  });
  vmodel = new ModelView();
});
```


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