extjs

问题 how to refresh a Tree Store ? I tried to do like that: Ext.getStore('myStore').setRootNode({child: []}); And then the Store will request the Server to have children but sometimes it gives me a child in double. In my Tree I get something like: child1 child2 child1 and there is also a javascript error: Uncaught TypeError: Cannot read property 'internalId' of undefined Ext.define.updateIndexes ext-all-debug.js:61588 Ext.define.onAdd ext-all-debug.js:61513 Base.implement.callParent ext-all-debug

问题 I use the UploadFile example in EXTJS (http://dev.sencha.com/deploy/dev/examples/form/file-upload.html) but I don't know what to write in the server side to save the uploaded file (in php) help me please My client side code is : var fp = new Ext.FormPanel({ //renderTo: 'fi-form', fileUpload: true, width: 500, frame: true, title: 'File Upload Form', autoHeight: true, bodyStyle: 'padding: 10px 10px 0 10px;', labelWidth: 50, defaults: { anchor: '95%', allowBlank: false, msgTarget: 'side' },

问题 My task is to put an image on the extjs grid column header whenever filter is applied in that column. When filter is cleared remove the image from the grid column header. How to achieve this in extjs 3? 回答1: In ExtJS 3.4 when filter is active on a column .ux-filtered-column class is added to the header cell. Easiest way is to add custom style for this class. 回答2: GridView has a reference to the grid it is used by. Hence, you could use this.grid.store.isFiltered() to check whether store is

问题 for a menu checkItem, when user clicks at it, by default it will trigger checkchange; i am wondering how to, if a certain case is met, not change its check status after clicked, in other words, stop this event chain. I tried following codes, but not work: listeners: { 'click': function(item, evt) { if(1) { //verify whether that certain case evt.stopEvent(); //since click_event is triggered before setChecked()/checkChange, I thought this may stop its going further... alert('case met!'); } },

问题 hi forum member I am having one problem with setting the radiofield in the extjs 4 my form radiogroup xtype code is given below { xtype: 'radiogroup', dataIndex: 'gender', margin: 5, fieldLabel: 'Gender', items: [{ xtype: 'radiofield', name: 'gender', boxLabel: 'Male', inputValue:'0' }, { xtype: 'radiofield', name: 'gender', boxLabel: 'Female', inputValue:'1' }] } my json data I am receiving is { "total": 1, "success": true, "employeedata": [{ "username": "yaryan997", "surname": "Singh",

问题 By default my website are having multi tabs, when just refresh the web site, the first tabs haven't loaded, then i clicked second tabs. second tabs are working fine, but when u go back first tabs, it is blank. p/s: when the first tabs are haven't loaded finish, u are click a new tabs, that will cause this error from ext-all.js TypeError: b.getComputedStyle(...) is null ...f(p==k){if(a+E+l.width>(O>=0?u.x+u.width-b:b-u.x)){p=M}}else{if(a+E>l.width){p=k... 2 all the tabs header are included ext

问题 I have generated a project using Sencha cmd. This creates a nice folder named 'overrides' where I have put my overridden Ext.Ajax class. I then include it in my app.js file like so requires: [ 'overrides.Ajax' ] This works just fine when using my app, however when I try to build it using Sencha cmd I get the following error: [ERR] BUILD FAILED [ERR] com.sencha.exceptions.BasicException: The following error occurred while e xecuting this line: [ERR] Z:\public_html\LoginScreen\.sencha\app\build

问题 This question probably is asked in other framework, not sure if there is one on ExtJs, which I am new to. I wonder whether there is a simple example with a TextArea and a button. When the button is pressed, a fixed string "???" is inserted at the cursor in the TextArea. Thanks in advance. 回答1: You can actually do this straight from the DOM, using textareas selectionStart attribute to find the caret position. So you could do something along the lines of textArea.value = textArea.value

问题 I need to configure my ExtJs textfield to accept only numbers which can be positive , negative , integer and decimals upto 2 decimals . I tried with maskeRe and regular expression /^-?[0-9]\d*(\.\d+)?$/ . But its accepting only positive integers. User should not be able to type restricted characters. Also it should accept '-' only at first place and '.' in between and only once. So it should accept : 10, -10, 10.12, -10.34 etc Link to my fiddle Thanks 回答1: Change your maskRe to maskRe: /[0-9.

问题 I need to configure my ExtJs textfield to accept only numbers which can be positive , negative , integer and decimals upto 2 decimals . I tried with maskeRe and regular expression /^-?[0-9]\d*(\.\d+)?$/ . But its accepting only positive integers. User should not be able to type restricted characters. Also it should accept '-' only at first place and '.' in between and only once. So it should accept : 10, -10, 10.12, -10.34 etc Link to my fiddle Thanks 回答1: Change your maskRe to maskRe: /[0-9.