Ext.ComponentQuerysingleton

• component or .component
• gridpanel or .gridpanel

• #myContainer

• component[autoScroll]
• panel[title="Test"]

var disabledFields = myFormPanel.query("{isDisabled()}");

// Function receives array and returns a filtered array.
Ext.ComponentQuery.pseudos.invalid = function(items) {
    var i = 0, l = items.length, c, result = [];
    for (; i < l; i++) {
        if (!(c = items[i]).isValid()) {
            result.push(c);
        }
    }
    return result;
};

var invalidFields = myFormPanel.query('field:invalid');
if (invalidFields.length) {
    invalidFields[0].getEl().scrollIntoView(myFormPanel.body);
    for (var i = 0, l = invalidFields.length; i < l; i++) {
        invalidFields[i].getEl().frame("red");
    }
}

Default pseudos include:
- not

// retrieve all Ext.Panels in the document by xtype
    var panelsArray = Ext.ComponentQuery.query('panel');

    // retrieve all Ext.Panels within the container with an id myCt
    var panelsWithinmyCt = Ext.ComponentQuery.query('#myCt panel');

    // retrieve all direct children which are Ext.Panels within myCt
    var directChildPanel = Ext.ComponentQuery.query('#myCt > panel');

    // retrieve all gridpanels and listviews
    var gridsAndLists = Ext.ComponentQuery.query('gridpanel, listview');