Printing pdf from extjs - best solution

Printing pdf from extjs - best solution

By : Rohan Bende
Date : October 28 2020, 04:55 PM
will be helpful for those in need Well, finally I came to the next solution: firstly we use AJAX request to save form details, and generate PDF on server side.
code :

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Extjs change fieldLabel after field is rendered. Any better solution?

Extjs change fieldLabel after field is rendered. Any better solution?

By : Bilal
Date : March 29 2020, 07:55 AM
help you fix your problem Accessing the dom to dynamically change fieldLabels was pre 3.0.1
After 3.0.1 I believe this works
code :
field.labelEl.update('New label');
ExtJS add FormPanel global listener or solution

ExtJS add FormPanel global listener or solution

By : user2332351
Date : March 29 2020, 07:55 AM
This might help you Create an ExtOverrides.js file which will modify base functionality of Ext. And add the following code:
code :
Ext.override(Ext.FormPanel, {
    onRender: function(ct, position){
        Ext.FormPanel.superclass.onRender.call(this, ct, position);

        //Begin edit of default functionality
        var firstFieldItem = this.getForm().items.first();
            //delay the focus for 500ms to make sure the field is visible
        //End edit of default functionality
Is MVC in ExtJs a one-size-fits-all solution?

Is MVC in ExtJs a one-size-fits-all solution?

By : Hang.Yin
Date : March 29 2020, 07:55 AM
Any of those help Do you need to use MVC? No. Assuming you've already got a structure that works well for you, if it's not broke, don't fix it. If you were starting a new project I'd recommend using MVC, but I wouldn't refactor a whole bunch of code for the sake of it. If you did use MVC, you would follow a similar approach. You'd have a base view class where you dynamically push on the items in the subclass. You'd have a base controller to handle all the custom events, then subclass controllers to implement custom functionality on a "per module" basis.
selecting node when using treeStore ExtJS (proxy solution)

selecting node when using treeStore ExtJS (proxy solution)

By : Alex R.
Date : March 29 2020, 07:55 AM
help you fix your problem I have tree store. , for example one solution:
code :
 var storeTree = Ext.create('Ext.data.TreeStore', {
    expanded: false,

    proxy: {
        type: 'ajax',
        url: 'tree2.json',

        extraParams: {o: 'SELECTED'},

    root: {
        text: 'Ext JS',
        id: 'src',
        expanded: true,

    folderSort: true,
    sorters: [{
        property: 'text',
        direction: 'ASC'

    url: 'tree.json'

    'load': function(store) {
        var node = store.getNodeById("select"); // your id here

    single: true
Printing out: no solution, multiple solution with Apache in java

Printing out: no solution, multiple solution with Apache in java

By : Reza Maulana
Date : March 29 2020, 07:55 AM
Hope that helps You can ask for the determinant https://en.wikipedia.org/wiki/Determinant
"A system of linear equations has a unique non-trivial solution if and only if its determinant is non-zero. If this determinant is zero, then the system has either no nontrivial solutions or an infinite number of solutions."
code :
if (lhs.det() == 0) {
    System.out.println("No solution or infinite number of solutions");
} else {
    Matrix ans = lhs.solve(rhs);
    //Printing Answers
    System.out.println("x1 = " + (ans.get(0, 0)));
    System.out.println("x2 = " + (ans.get(1, 0)));
    System.out.println("X3 = " + (ans.get(2, 0)));
    System.out.println("X4 = " + (ans.get(3, 0)));
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