This chapter list down the steps to write first Hello World program in Ext JS:
index.htm
Step 1
Create index.htm page in an editor of our choice. Include the required library files in head section of html page as mentioned below:index.htm
<!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"> Ext.onReady(function() { Ext.create('Ext.Panel', { renderTo: 'helloWorldPanel', height: 200, width: 600, title: 'Hello world', html: 'First Ext JS Hello World Program' }); }); </script> </head> <body> <div id="helloWorldPanel" /> </body> </html>
Explanation
- Ext.onReady() method will be called once the Ext JS is ready to render the Ext JS elements.
- Ext.create() method is used to create object in Ext JS here we are creating an object of simple panel class Ext.Panel.
- Ext.Panel is the predefined class in Ext JS for creating a panel.
- Every Ext JS class has different properties to perform some basic functionalities.
- renderTo is the element where this panel has to be render. 'helloWorldPanel' is the div id in Index.html file.
- Height and width properties are for giving custom size of the panel.
- Title property is to provide the title to the panel.
- Html property is the html content to be shown in the panel.
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