This Ext.js Grid is a simple component to display data, which is a collection of record stored in Ext.data.Store in a tabular format.
Syntax
Following is a simple syntax to create grid in Ext.js.
Ext.create('Ext.grid.Panel',{
grid properties..
columns : [Columns]
});
Example
Following is a simple example showing grid.
<!DOCTYPE html>
<html>
<head>
<link href = "https://cdnjs.cloudflare.com/ajax/libs/extjs/6.0.0/classic/theme-classic/resources/theme-classic-all.css"
rel = "stylesheet" />
<script type = "text/javascript"
src = "https://cdnjs.cloudflare.com/ajax/libs/extjs/6.0.0/ext-all.js"></script>
<script type = "text/javascript">
// Creation of data model
Ext.define('StudentDataModel', {
extend: 'Ext.data.Model',
fields: [
{name: 'name', mapping : 'name'},
{name: 'age', mapping : 'age'},
{name: 'marks', mapping : 'marks'}
]
});
Ext.onReady(function() {
// Store data
var myData = [
{ name : "Asha", age : "16", marks : "90" },
{ name : "Vinit", age : "18", marks : "95" },
{ name : "Anand", age : "20", marks : "68" },
{ name : "Niharika", age : "21", marks : "86" },
{ name : "Manali", age : "22", marks : "57" }
];
// Creation of first grid store
var gridStore = Ext.create('Ext.data.Store', {
model: 'StudentDataModel',
data: myData
});
// Creation of first grid
Ext.create('Ext.grid.Panel', {
id : 'gridId',
store : gridStore,
stripeRows : true,
title : 'Students Grid', // Title for the grid
renderTo :'gridDiv', // Div id where the grid has to be rendered
width : 600,
collapsible : true, // property to collapse grid
enableColumnMove :true, // property which allows column to move to different position by dragging that column.
enableColumnResize:true, // property which allows to resize column run time.
columns :
[{
header: "Student Name",
dataIndex: 'name',
id : 'name',
flex: 1, // property defines the amount of space this column is going to take in the grid container with respect to all.
sortable: true, // property to sort grid column data.
hideable: true // property which allows column to be hidden run time on user request.
},{
header: "Age",
dataIndex: 'age',
flex: .5,
sortable: true,
hideable: false // this column will not be available to be hidden.
},{
header: "Marks",
dataIndex: 'marks',
flex: .5,
sortable: true,
// renderer is used to manipulate data based on some conditions here
// who ever has marks greater than 75 will be displayed as
// 'Distinction' else 'Non Distinction'.
renderer : function (value, metadata, record, rowIndex, colIndex, store) {
if (value > 75) {
return "Distinction";
} else {
return "Non Distinction";
}
}
}]
});
});
</script>
</head>
<body>
<div id = "gridDiv"></div>
</body>
</html>
The above program will produce the following result −
Grid Poperties
Collapsible − This property is to add a collapse feature to the grid. Add “Collapsible : true” feature in grid properties to add this feature.
Sorting − This property is to add a sorting feature to the grid. Add Column property”sortable : true” in the grid to apply sorting ASC/DESC. By default, it is true. It can be made false, if you don’t want this feature to appear.
columns : [{
header: "Student Name",
dataIndex: 'name',
id : 'name',
flex: 1,
sortable: true // property to sort grid column data
}]
By default, sorting can be applied with property sorters : {property: ‘id’, direction : ‘ASC’} in store. It will sort grid data based on the property provided in the sorters and the direction given, before rendering data into the grid.
Enable Column resize − Column can be resized (its width can be increased or decreased) using grid properties “enableColumnResize: true”.
Column hideable − Add Column property “hideable : true” in a grid to make the column appear or hide. By default, it is true. It can be made false, if you don’t want this feature to appear.
columns : [{
header: "Student Name",
dataIndex: 'name',
id : 'name',
flex: 1,
sortable: true,
hideable: true // property which allows column to be hidden run time on user request
}]
Draggable column − Add Column property “enableColumnMove: true” is grid property with which we can move columns in a grid.
Renderer − This is the property to customize the view of grid data based on the data we get from the store.
columns : [{
header: "Marks",
dataIndex: 'marks',
flex: .5,
sortable: true,
// renderer is used to manipulate data based on some conditions here who
// ever has marks greater than 75 will be displayed as 'Distinction'
// else 'Non Distinction'.
renderer : function (value, metadata, record, rowIndex, colIndex, store) {
if (value > 75) {
return "Distinction";
} else {
return "Non Distinction";
}
}
}]
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