First, you can create a Vue application to implement your Jiugongge lottery program.
Then, you can use Vue's template syntax to render the nine-square grid layout. You can use a loop to render nine blocks, each of which is a separate component. Each component has a state indicating whether it has been selected.
Next, you can add a click event to each box, which will set the state of the box to selected whenever the user clicks on it.
Finally, you can add a button that when the user clicks, the draw will take place. You can use random numbers to randomly select a block as the winning block and set the status of this block to checked.
Hope this answer helps you!