Category Archives: Coding
Trailing comma in JavaScript
When trying to find a trailing comma error in JavaScript/JSON (mostly for Internet Explorer) regular expressions come in nicely. Search for the following: ,\s+} It matches a comma followed by one or more whitespaces (tabs, spaces, line breaks), followed by … Continue reading
ExtJS – Method previous is undefined
Having a ‘method.$previous is undefined’ error in ExtJS 4? You’re probably calling ‘callOverridden‘ instead of ‘callParent‘ when extending a class. Ext.define(‘MyApp.controller.BaseController’, { extend: ‘Ext.app.Controller’, myFunction: function() { console.log(‘myFunction in BaseController’); } }); Ext.define(‘MyApp.controller.SpecificController’, { extend: ‘MyApp.controller.BaseController’, myFunction: function() { this.callOverridden(arguments); … Continue reading
Unchecked checkbox in ExtJS 4
I’m currently in the process of converting a ExtJS 3 application to ExtJS 4. One of the things ExtJS 3 couldn’t do is submit the value of an unchecked checkbox. Checkboxes only have a value when they are checked. Two … Continue reading