After extjs checkboxselectionmodel is selected, the checkbox of the table header is cleared.

After extjs is all selected, click Delete and the All selected box is still selected. The all selected box should not be selected after deletion.

 

 

Solution:

Add the following methods to delete an event:

 
Function autocheckgridhead () {var hd_checker = ext. getcmp ("Grid-sysmsg "). getel (). select ('div. x-grid3-hd-checker '); var Hd = hd_checker.first (); // clear the checkbox if (HD. hasclass ('x-grid3-hd-checker-on ') {HD. removeclass ('x-grid3-hd-checker-on ');}}
 

Below is a section I saw on the InternetCodeFor more information, see.

Solution: // monitor whether the store data changes and perform other processing; pl_store.on ('datachanged', function () {var Hd = pl_grid.getel (). select ('div. x-grid3-hd-checker '); If (pl_grid.getselectionmodel (). getselections (). length! = Pagecount) {// if not all are selected, // clear the checkbox if (HD. hasclass ('x-grid3-hd-checker-on ') {HD. removeclass ('x-grid3-hd-checker-on '); // x-grid3-hd-checker-on} else {If (! HD. hasclass ('x-grid3-hd-checker-on ') {HD. addclass ('x-grid3-hd-checker-on '); // x-grid3-hd-checker-on}); this previously written implementation (the above Code) has a problem with pl_grid.getel (). select ('div. x-grid3-hd-checker '); find the wrong element, huh, may cause the grid header checkbox is not available; please refer to the following implementation: // automatically determines whether all checkbox functions autocheckgridhead () {var hd_checker = grid_taskquerypop.getel () are selected or not (). select ('div. x-grid3-hd-checker '); var Hd = hd_checker.first (); If (HD! = NULL) {If (grid_taskquerypop.getselectionmodel (). getselections (). length! = Grid_taskquerypop.getstore (). getcount () {// clear the checkbox if (HD. hasclass ('x-grid3-hd-checker-on ') {HD. removeclass ('x-grid3-hd-checker-on '); // x-grid3-hd-checker-on // grid_taskquerypop.getselectionmodel (). clearselections () ;}} else {If (grid_taskquerypop.getstore (). getcount () = 0) {// empty if no record exists; return;} HD. addclass ('x-grid3-hd-checker-on '); grid_taskquerypop.getselectionmodel (). selectall ();}}}