https://www.bestbassgear.com/js/mirasvit/code/searchautocomplete/form.js?q=051216

1jQuery.noConflict();
2jQuery(function($) {
3
4SearchAutocompleteForm = Backbone.View.extend({
5    events : {
6        'focus .UI-SEARCH' : 'focus',
7        'blur .UI-SEARCH'  : 'blur',
8        'submit'           : 'submit'
9    },
10
11    initialize: function() {
12        var self = this;
13        _.bindAll(self);
14    },
15
16    init: function(el) {
17        var self = this;
18        self.setElement(el);
19
20        self.$field    = $('.UI-SEARCH', self.$el);
21        self.emptyText = self.$el.attr('data-tip');
22
23        self.blur();
24    },
25
26    submit: function(e) {
27        var self = this;
28
29        if (self.$field.val() == self.emptyText || self.$field.val() == '') {
30            e.stopPropagation();
31            return false;
32        }
33
34        return true;
35    },
36
37    focus: function() {
38        var self = this;
39
40        if(self.$field.val() == self.emptyText){
41            self.$field.val('');
42        }
43    },
44
45    blur: function() {
46        var self = this;
47
48        if(self.$field.val() == ''){
49            self.$field.val(self.emptyText);
50        }
51    }
52
53});
54
55$(function() {
56    _.each($('.UI-SEARCHAUTOCOMPLETE'), function (el) {
57        var form = new SearchAutocompleteForm();
58        form.init(el);
59    });
60});
61
62});