Autofilling arrays using templates and sub-templates
Conditional processing with basic comparison operators
Basic math function support
Execute arbitrary inline code with special built-in template variables
Custom member functions
Many special tags and built-in operators that aren't defined as part of * the API, but are supported in the templates that can be created

{@link Ext.DataView}
{@link Ext.ListView}
{@link Ext.form.ComboBox}
{@link Ext.grid.TemplateColumn}
{@link Ext.grid.GroupingView}
{@link Ext.menu.Item}
{@link Ext.layout.MenuLayout}
{@link Ext.ColorPalette}

Sample Data *

*

This is the data object used for reference in each code example:

*


var data = {
    name: 'Jack Slocum',
    title: 'Lead Developer',
    company: 'Ext JS, LLC',
    email: 'jack@extjs.com',
    address: '4 Red Bulls Drive',
    city: 'Cleveland',
    state: 'Ohio',
    zip: '44102',
    drinks: ['Red Bull', 'Coffee', 'Water'],
    kids: [{
        name: 'Sara Grace',
        age:3
    },{
        name: 'Zachary',
        age:2
    },{
        name: 'John James',
        age:0
    }]
};
 *

*

Auto filling of arrays *

*

The tpl tag and the for operator are used * to process the provided data object: *

If the value specified in for is an array, it will auto-fill, * repeating the template block inside the tpl tag for each item in the * array.
If for="." is specified, the data object provided is examined.
While processing an array, the special variable {#} * will provide the current array index + 1 (starts at 1, not 0).

*


<tpl for=".">...</tpl>       // loop through array at root node
<tpl for="foo">...</tpl>     // loop through array at foo node
<tpl for="foo.bar">...</tpl> // loop through array at foo.bar node
 *

* Using the sample data above: *


var tpl = new Ext.XTemplate(
    '<p>Kids: ',
    '<tpl for=".">',       // process the data.kids node
        '<p>{#}. {name}</p>',  // use current array index to autonumber
    '</tpl></p>'
);
tpl.overwrite(panel.body, data.kids); // pass the kids property of the data object
 *

*

An example illustrating how the for property can be leveraged * to access specified members of the provided data object to populate the template:

*


var tpl = new Ext.XTemplate(
    '<p>Name: {name}</p>',
    '<p>Title: {title}</p>',
    '<p>Company: {company}</p>',
    '<p>Kids: ',
    '<tpl for="kids">',     // interrogate the kids property within the data
        '<p>{name}</p>',
    '</tpl></p>'
);
tpl.overwrite(panel.body, data);  // pass the root node of the data object
 *

*

Flat arrays that contain values (and not objects) can be auto-rendered * using the special {.} variable inside a loop. This variable * will represent the value of the array at the current index:

*


var tpl = new Ext.XTemplate(
    '<p>{name}\'s favorite beverages:</p>',
    '<tpl for="drinks">',
       '<div> - {.}</div>',
    '</tpl>'
);
tpl.overwrite(panel.body, data);
 *

*

When processing a sub-template, for example while looping through a child array, * you can access the parent object's members via the parent object:

*


var tpl = new Ext.XTemplate(
    '<p>Name: {name}</p>',
    '<p>Kids: ',
    '<tpl for="kids">',
        '<tpl if="age > 1">',
            '<p>{name}</p>',
            '<p>Dad: {parent.name}</p>',
        '</tpl>',
    '</tpl></p>'
);
tpl.overwrite(panel.body, data);
 *

*

Conditional processing with basic comparison operators *

*

The tpl tag and the if operator are used * to provide conditional checks for deciding whether or not to render specific * parts of the template. Notes:

Double quotes must be encoded if used within the conditional
There is no else operator — if needed, two opposite * if statements should be used.

*


<tpl if="age > 1 && age < 10">Child</tpl>
<tpl if="age >= 10 && age < 18">Teenager</tpl>
<tpl if="this.isGirl(name)">...</tpl>
<tpl if="id==\'download\'">...</tpl>
<tpl if="needsIcon"><img src="{icon}" class="{iconCls}"/></tpl>
// no good:
<tpl if="name == "Jack"">Hello</tpl>
// encode " if it is part of the condition, e.g.
<tpl if="name == &quot;Jack&quot;">Hello</tpl>
 *

* Using the sample data above: *


var tpl = new Ext.XTemplate(
    '<p>Name: {name}</p>',
    '<p>Kids: ',
    '<tpl for="kids">',
        '<tpl if="age > 1">',
            '<p>{name}</p>',
        '</tpl>',
    '</tpl></p>'
);
tpl.overwrite(panel.body, data);
 *

*

Basic math support *

*

The following basic math operators may be applied directly on numeric * data values:

 * + - * /
 *

* For example: *


var tpl = new Ext.XTemplate(
    '<p>Name: {name}</p>',
    '<p>Kids: ',
    '<tpl for="kids">',
        '<tpl if="age &gt; 1">',  // <-- Note that the > is encoded
            '<p>{#}: {name}</p>',  // <-- Auto-number each item
            '<p>In 5 Years: {age+5}</p>',  // <-- Basic math
            '<p>Dad: {parent.name}</p>',
        '</tpl>',
    '</tpl></p>'
);
tpl.overwrite(panel.body, data);

*

Execute arbitrary inline code with special built-in template variables *
*
Anything between {[ ... ]} is considered code to be executed * in the scope of the template. There are some special variables available in that code: *
- values: The values in the current scope. If you are using * scope changing sub-templates, you can change what values is.
- parent: The scope (values) of the ancestor template.
- xindex: If you are in a looping template, the index of the * loop you are in (1-based).
- xcount: If you are in a looping template, the total length * of the array you are looping.
- fm: An alias for Ext.util.Format.
* This example demonstrates basic row striping using an inline code block and the * xindex variable:
*
```
var tpl = new Ext.XTemplate(
    '<p>Name: {name}</p>',
    '<p>Company: {[values.company.toUpperCase() + ", " + values.title]}</p>',
    '<p>Kids: ',
    '<tpl for="kids">',
       '<div class="{[xindex % 2 === 0 ? "even" : "odd"]}">',
        '{name}',
        '</div>',
    '</tpl></p>'
);
tpl.overwrite(panel.body, data);
 * 
```
*
*

Template member functions *

*

One or more member functions can be specified in a configuration * object passed into the XTemplate constructor for more complex processing:

*


var tpl = new Ext.XTemplate(
    '<p>Name: {name}</p>',
    '<p>Kids: ',
    '<tpl for="kids">',
        '<tpl if="this.isGirl(name)">',
            '<p>Girl: {name} - {age}</p>',
        '</tpl>',
        // use opposite if statement to simulate 'else' processing:
        '<tpl if="this.isGirl(name) == false">',
            '<p>Boy: {name} - {age}</p>',
        '</tpl>',
        '<tpl if="this.isBaby(age)">',
            '<p>{name} is a baby!</p>',
        '</tpl>',
    '</tpl></p>',
    {
        // XTemplate configuration:
        compiled: true,
        disableFormats: true,
        // member functions:
        isGirl: function(name){
            return name == 'Sara Grace';
        },
        isBaby: function(age){
            return age < 1;
        }
    }
);
tpl.overwrite(panel.body, data);
 *

*