I am trying to make an alert (once) when the input is clicked. Here is my attempt so far. 

```js
$("#target" ).focus(function() {
  alert( "Handler for .select() called." );
});
```

```html
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<input id="input_text" id="target">
```

What should I do to fix it