Solve the problem of extjs grid not adapting to the change of window size_extjs

I recently encountered a problem. When using the grid, the window changed but the grid could not change adaptively. So I added this line of statement
The problem was solved. The rendering

Drag to enlarge The final effect

Added statement:

Copy code The code is as follows:

Ext.EventManager.onWindowResize(function(){
grid1.getView().refresh()
})

See the complete code;

Copy code The code is as follows: