Extjs tips (1)

1. Three methods for obtaining field from form:

1,Ext. getcmp ('id ');

2. formpanel. getform (). findfield ('Id/name ');

3. Ext. Get ('Id/name'); // The premise is that formpanel is displayed on the interface.

 

Ii. How extjs assigns a value to textfield:

VaR value = "value ";

1. fs. Form. findfield (ID/Name). setvalue (value );

2. Ext. Get (ID/Name). setvalue (value );

3. Ext. getcmp (ID). setvalue (value );

 

III,EXT Grid

 

In ext grid, assume that there is an object named grid.

(1) grid. getstore (). getrange (0, store. getcount (); // obtain all rows of the grid.

(2) grid. getselectionmodel (). getselections () // You can select all rows.

(3) grid. selmodel. Selections. items; // You can select all rows.

(4) grid. getselectionmodel (). getselected (); // obtain the first row of the selected row.

 

IV,Automatic combo assignment when formpanel component loads data

Combo has the hiddenname attribute, which is the actually submitted value. When loading, you can set this attribute to reader and then automatically select the specified value, for example: hiddenname: 'value', your reader should have a {Name: 'value '}.

 

V,Extjs form resetting Method:

There are three ways to reset form forms. Assume var FS = new Ext. Form. formpanel ({...});
(1) fs. Form. Reset (); // reset form
(2) fs. getform (). getel (). Dom. Reset (); // reset form
(3) Ext. getcmp ('fs'). Form. Reset ();