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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1" />
<title>jQuery Cascading Dropdown Plugin Examples</title>
<meta name="description" content="" />
<meta name="viewport" content="width=device-width" />
<!-- Stylesheets here -->
<link
rel="stylesheet"
type="text/css"
href="http://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/2.3.0/css/bootstrap.min.css"
/>
<style type="text/css">
.bs-docs-example {
position: relative;
margin: 15px 0;
padding: 39px 19px 14px;
background-color: #fff;
border: 1px solid #ddd;
-webkit-border-radius: 4px;
-moz-border-radius: 4px;
border-radius: 4px;
}
.bs-docs-example:after {
content: 'Example';
position: absolute;
top: -1px;
left: -1px;
padding: 3px 7px;
font-size: 12px;
font-weight: bold;
background-color: #f5f5f5;
border: 1px solid #ddd;
color: #9da0a4;
-webkit-border-radius: 4px 0 4px 0;
-moz-border-radius: 4px 0 4px 0;
border-radius: 4px 0 4px 0;
}
.cascading-dropdown-loading {
cursor: wait;
background: url('res/ajax-loader.gif') 85% center no-repeat transparent;
}
</style>
<link
rel="stylesheet"
type="text/css"
href="http://cdnjs.cloudflare.com/ajax/libs/SyntaxHighlighter/3.0.83/styles/shCore.css"
/>
<link
rel="stylesheet"
type="text/css"
href="http://cdnjs.cloudflare.com/ajax/libs/SyntaxHighlighter/3.0.83/styles/shThemeDefault.css"
/>
</head>
<body>
<div class="container">
<div class="page-header">
<h1>jQuery Cascading Dropdown <small>Examples</small></h1>
</div>
<h4>Basic</h4>
<p>
This is a basic dropdown setup where the second dropdown is dependent on
the first dropdown having a value, and the third dropdown is dependent
on either the first or second one having a value.
</p>
<p>
This example also shows how you can set the selected dropdown item when
you initialise the plugin. This can be done either in code, or by
including the HTML selected attribute on the targeted dropdown item.
</p>
<div id="example1" class="bs-docs-example">
<h4>Phone finder</h4>
<select class="step1" name="screen">
<option value="">Screen size</option>
<option value="4">4.0"</option>
<option value="4.3">4.3"</option>
<option value="4.7">4.7"</option>
<option value="5">5.0"</option>
</select>
<select class="step2" name="resolution">
<option value="">Screen resolution</option>
<option value="540" selected>540p</option>
<option value="720">720p</option>
<option value="1080">1080p</option>
</select>
<select class="step3" name="storage">
<option value="">Storage size</option>
<option value="8">8 GB</option>
<option value="16">16 GB</option>
<option value="32">32 GB</option>
<option value="64">64 GB</option>
</select>
<h4>
Matches <img src="res/ajax-loader.gif" data-bind="visible: loading" />
</h4>
<ul data-bind="foreach: phones, visible: phones().length > 0">
<li>
<span data-bind="text: maker"></span>
<span data-bind="text: model"></span>
</li>
</ul>
<p data-bind="visible: phones().length == 0">No matches</p>
</div>
<h6>Code</h6>
<div>
<pre class="brush: js">
$('#example1').cascadingDropdown({
selectBoxes: [
{
selector: '.step1',
selected: '4.3'
},
{
selector: '.step2',
requires: ['.step1']
},
{
selector: '.step3',
requires: ['.step1', '.step2'],
onChange: function(event, value, requiredValues) {
// do stuff
// event is the change event object for the current dropdown
// value is the current dropdown value
// requiredValues is an object with required dropdown values
// requirementsMet is a boolean value to indicate if all requirements (including current dropdown having a value) have been met
}
}
]
});</pre
>
</div>
<br />
<h4>Dynamic</h4>
<p>
This example shows how you can create a completely dynamic group of
dropdowns. Dropdowns with dependencies will react based on the rules
given, and fetch its own list from the server via Ajax.
</p>
<p>
You can provide an array of strings or objects, or a function as the
dropdown data source.
</p>
<p>
This example also demonstrates how you can set the selected item for a
dropdown in the source option. For example, you can have it select an
item when it is the only item available. The plugin will select that
item and trigger the change event.
</p>
<div id="example2" class="bs-docs-example">
<h4>Phone finder</h4>
<select class="step1" name="screen">
<option value="">Screen size</option>
</select>
<select class="step2" name="resolution">
<option value="">Screen resolution</option>
</select>
<select class="step3" name="storage">
<option value="">Storage size</option>
</select>
<h4>
Matches <img src="res/ajax-loader.gif" data-bind="visible: loading" />
</h4>
<ul data-bind="foreach: phones, visible: phones().length > 0">
<li>
<span data-bind="text: maker"></span>
<span data-bind="text: model"></span>
</li>
</ul>
<p data-bind="visible: phones().length == 0">No matches</p>
</div>
<h6>Code</h6>
<div>
<pre class="brush: js">
$('#example2').cascadingDropdown({
selectBoxes: [
{
selector: '.step1',
source: [
{ label: '4.0"', value: 4 },
{ label: '4.3"', value: 4.3 },
{ label: '4.7"', value: 4.7 },
{ label: '5.0"', value: 5 }
]
},
{
selector: '.step2',
requires: ['.step1'],
source: function(request, response) {
$.getJSON('/api/resolutions', request, function(data) {
var selectOnlyOption = data.length <= 1;
response($.map(data, function(item, index) {
return {
label: item + 'p',
value: item,
selected: selectOnlyOption // Select if only option
};
}));
});
}
},
{
selector: '.step3',
requires: ['.step1', '.step2'],
requireAll: true,
source: function(request, response) {
$.getJSON('/api/storages', request, function(data) {
response($.map(data, function(item, index) {
return {
label: item + ' GB',
value: item,
selected: index == 0 // Select first available option
};
}));
});
},
onChange: function(event, value, requiredValues, requirementsMet){
// do stuff
}
}
]
});</pre
>
</div>
<br />
<h4>Combined</h4>
<p>
This example demonstrates the plugin's capability to combine both static
and dynamic dropdowns. It also demonstrates how you can set the default
selected dropdown item in a dynamic dropdown scenario.
</p>
<div id="example3" class="bs-docs-example">
<h4>Phone finder</h4>
<select class="step1" name="screen">
<option value="">Screen size</option>
<option value="4" selected="selected">4.0"</option>
<option value="4.3">4.3"</option>
<option value="4.7">4.7"</option>
<option value="5">5.0"</option>
</select>
<select class="step2" name="resolution">
<option value="">Screen resolution</option>
</select>
<select class="step3" name="storage">
<option value="">Storage size</option>
</select>
<h4>
Matches <img src="res/ajax-loader.gif" data-bind="visible: loading" />
</h4>
<ul data-bind="foreach: phones, visible: phones().length > 0">
<li>
<span data-bind="text: maker"></span>
<span data-bind="text: model"></span>
</li>
</ul>
<p data-bind="visible: phones().length == 0">No matches</p>
</div>
<h6>Code</h6>
<div>
<pre class="brush: js">
$('#example3').cascadingDropdown({
selectBoxes: [
{
selector: '.step1'
},
{
selector: '.step2'
},
{
selector: '.step3',
requires: ['.step1', '.step2'],
requireAll: true,
source: function(request, response) {
$.getJSON('/api/storages', request, function(data) {
response($.map(data, function(item, index) {
return {
label: item + ' GB',
value: item,
selected: index == 0 // set to true to mark it as the selected item
};
}));
});
}
}
],
onChange: function(event, dropdownData) {
// do stuff
// dropdownData is an object with values from all the dropdowns in this group
},
onReady: function(event, dropdownData) {
// do stuff
}
});</pre
>
</div>
<br />
<h4>Option Group</h4>
<p>
This example demonstrates the plugin's capability to combine both
standard and grouped (option group) dropdowns.
</p>
<div id="example5" class="bs-docs-example">
<h4>Phone finder</h4>
<select class="step1" name="screen">
<option value="">Screen size</option>
<option value="4" selected="selected">4.0"</option>
<option value="4.3">4.3"</option>
<option value="4.7">4.7"</option>
<option value="5">5.0"</option>
</select>
<select class="step2" name="resolution">
<option value="">Screen resolution</option>
</select>
<select class="step3" name="storage">
<option value="">Storage size</option>
</select>
<h4>
Matches <img src="res/ajax-loader.gif" data-bind="visible: loading" />
</h4>
<ul data-bind="foreach: phones, visible: phones().length > 0">
<li>
<span data-bind="text: maker"></span>
<span data-bind="text: model"></span>
</li>
</ul>
<p data-bind="visible: phones().length == 0">No matches</p>
</div>
<h6>Code</h6>
<div>
<pre class="brush: js">
$('#example5').cascadingDropdown({
selectBoxes: [
{
selector: '.step1'
},
{
selector: '.step2',
source: function(request, response) {
$.getJSON('/api/resolutionsGrouped', request, function(data) {
var newData = {};
$.each(data, function(key, value) {
newData[key] = $.map(value, function(item, index) {
return {
label: item + 'p',
value: item
};
});
});
response(newData);
});
}
},
{
selector: '.step3',
requires: ['.step1', '.step2'],
requireAll: true,
source: function(request, response) {
$.getJSON('/api/storages', request, function(data) {
response($.map(data, function(item, index) {
return {
label: item + ' GB',
value: item,
selected: index == 0 // set to true to mark it as the selected item
};
}));
});
}
}
],
onChange: function(event, dropdownData) {
// do stuff
// dropdownData is an object with values from all the dropdowns in this group
},
onReady: function(event, dropdownData) {
// do stuff
}
});</pre
>
</div>
<br />
<h4>Multiple select</h4>
<p>
You can enable multiple select by including the
<code>multiple</code> attribute. The value for the dropdown will then be
an array of strings instead of a string. However, you will need to
ensure that your backend service supports this type of data.
</p>
<div id="example4" class="bs-docs-example">
<h4>Phone finder</h4>
<select class="step1" name="screen" multiple="multiple">
<option value="4">4.0"</option>
<option value="4.3">4.3"</option>
<option value="4.7">4.7"</option>
<option value="5">5.0"</option>
</select>
<select class="step2" name="resolution" multiple="multiple"> </select>
<select class="step3" name="storage" multiple="multiple"> </select>
<h4>
Matches <img src="res/ajax-loader.gif" data-bind="visible: loading" />
</h4>
<ul data-bind="foreach: phones, visible: phones().length > 0">
<li>
<span data-bind="text: maker"></span>
<span data-bind="text: model"></span>
</li>
</ul>
<p data-bind="visible: phones().length == 0">No matches</p>
</div>
<br />
<p class="text-center">
<small
>Copyright © 2013
<a href="http://dnasir.com">Dzulqarnain Nasir</a></small
>
</p>
</div>
<!-- Scripts here -->
<script
type="text/javascript"
src="https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.2/jquery.js"
></script>
<script
type="text/javascript"
src="https://cdnjs.cloudflare.com/ajax/libs/knockout/2.3.0/knockout-min.js"
></script>
<script
type="text/javascript"
src="https://cdnjs.cloudflare.com/ajax/libs/jquery-mockjax/1.6.1/jquery.mockjax.min.js"
></script>
<script type="text/javascript" src="res/ajax-mocks.js"></script>
<script
type="text/javascript"
src="dist/jquery.cascadingdropdown.min.js"
></script>
<script type="text/javascript">
function viewmodel() {
this.phones = ko.observableArray([]);
this.loading = ko.observable(false);
}
var example1 = new viewmodel(),
example2 = new viewmodel(),
example3 = new viewmodel(),
example4 = new viewmodel();
example5 = new viewmodel();
ko.applyBindings(example1, document.getElementById('example1'));
ko.applyBindings(example2, document.getElementById('example2'));
ko.applyBindings(example3, document.getElementById('example3'));
ko.applyBindings(example4, document.getElementById('example4'));
ko.applyBindings(example5, document.getElementById('example5'));
// Example 1
$('#example1').cascadingDropdown({
selectBoxes: [
{
selector: '.step1',
selected: '4.3'
},
{
selector: '.step2',
requires: ['.step1']
},
{
selector: '.step3',
requires: ['.step1', '.step2'],
onChange: function(event, value, requiredValues, requirementsMet) {
if (!requirementsMet) return;
example1.loading(true);
var ajaxData = requiredValues;
ajaxData[this.el.attr('name')] = value;
$.getJSON('/api/phones', ajaxData, function(data) {
example1.phones(data);
example1.loading(false);
});
}
}
]
});
// Example 2
$('#example2').cascadingDropdown({
selectBoxes: [
{
selector: '.step1',
source: [
{ label: '4.0"', value: 4 },
{ label: '4.3"', value: 4.3 },
{ label: '4.7"', value: 4.7 },
{ label: '5.0"', value: 5 }
]
},
{
selector: '.step2',
requires: ['.step1'],
source: function(request, response) {
$.getJSON('/api/resolutions', request, function(data) {
var selectOnlyOption = data.length <= 1;
response(
$.map(data, function(item, index) {
return {
label: item + 'p',
value: item,
selected: selectOnlyOption
};
})
);
});
}
},
{
selector: '.step3',
requires: ['.step1', '.step2'],
requireAll: true,
source: function(request, response) {
$.getJSON('/api/storages', request, function(data) {
response(
$.map(data, function(item, index) {
return {
label: item + ' GB',
value: item,
selected: index == 0
};
})
);
});
},
onChange: function(event, value, requiredValues, requirementsMet) {
if (!requirementsMet) return;
example2.loading(true);
var ajaxData = requiredValues;
ajaxData[this.el.attr('name')] = value;
$.getJSON('/api/phones', ajaxData, function(data) {
example2.phones(data);
example2.loading(false);
});
}
}
]
});
// Example 3
$('#example3').cascadingDropdown({
selectBoxes: [
{
selector: '.step1'
},
{
selector: '.step2',
source: function(request, response) {
$.getJSON('/api/resolutions', request, function(data) {
response(
$.map(data, function(item, index) {
return {
label: item + 'p',
value: item,
selected: index == 0
};
})
);
});
}
},
{
selector: '.step3',
requires: ['.step1', '.step2'],
requireAll: true,
source: function(request, response) {
$.getJSON('/api/storages', request, function(data) {
response(
$.map(data, function(item, index) {
return {
label: item + ' GB',
value: item,
selected: index == 0
};
})
);
});
}
}
],
onChange: function(event, dropdownData) {
example3.loading(true);
$.getJSON('/api/phones', dropdownData, function(data) {
example3.phones(data);
example3.loading(false);
});
},
onReady: function(event, dropdownData) {
example3.loading(true);
$.getJSON('/api/phones', dropdownData, function(data) {
example3.phones(data);
example3.loading(false);
});
}
});
// Example 4
$('#example4').cascadingDropdown({
selectBoxes: [
{
selector: '.step1',
selected: [1, 2],
onChange: function(e, selected) {
console.log(selected);
}
},
{
selector: '.step2',
source: function(request, response) {
$.getJSON('/api/resolutions', request, function(data) {
response(
$.map(data, function(item, index) {
return {
label: item + 'p',
value: item,
selected: index == 0
};
})
);
});
}
},
{
selector: '.step3',
requires: ['.step1', '.step2'],
requireAll: true,
source: function(request, response) {
$.getJSON('/api/storages', request, function(data) {
response(
$.map(data, function(item, index) {
return {
label: item + ' GB',
value: item,
selected: index == 0
};
})
);
});
}
}
],
onChange: function(event, dropdownData) {
example4.loading(true);
$.getJSON('/api/phones', dropdownData, function(data) {
example4.phones(data);
example4.loading(false);
});
},
onReady: function(event, dropdownData) {
example4.loading(true);
$.getJSON('/api/phones', dropdownData, function(data) {
example4.phones(data);
example4.loading(false);
});
}
});
// Example 5
$('#example5').cascadingDropdown({
selectBoxes: [
{
selector: '.step1'
},
{
selector: '.step2',
source: function(request, response) {
$.getJSON('/api/resolutionsGrouped', request, function(data) {
var newData = {};
$.each(data, function(key, value) {
newData[key] = $.map(value, function(item, index) {
return {
label: item + 'p',
value: item
};
});
});
response(newData);
});
}
},
{
selector: '.step3',
requires: ['.step1', '.step2'],
requireAll: true,
source: function(request, response) {
$.getJSON('/api/storages', request, function(data) {
response(
$.map(data, function(item, index) {
return {
label: item + ' GB',
value: item,
selected: index == 0 // set to true to mark it as the selected item
};
})
);
});
}
}
],
onChange: function(event, dropdownData) {
example5.loading(true);
$.getJSON('/api/phones', dropdownData, function(data) {
example5.phones(data);
example5.loading(false);
});
},
onReady: function(event, dropdownData) {
example5.loading(true);
$.getJSON('/api/phones', dropdownData, function(data) {
example5.phones(data);
example5.loading(false);
});
}
});
</script>
<script
type="text/javascript"
src="http://cdnjs.cloudflare.com/ajax/libs/SyntaxHighlighter/3.0.83/scripts/shCore.js"
></script>
<script
type="text/javascript"
src="http://cdnjs.cloudflare.com/ajax/libs/SyntaxHighlighter/3.0.83/scripts/shBrushJScript.js"
></script>
<script type="text/javascript">
SyntaxHighlighter.all();
</script>
</body>
</html>