PHP JS The background color of the mobile number button changes color after being clicked. The selected numbers form an array. If the three number buttons 1, 3, and 9 are selected, the button will turn red. After clicking OK, the variable ABC= I wrote 1, 3, and 9 myself. It works for ios but not for Android. Is there any master who can help me? Please attach the entire page of code to the masters. Novices will be confused after reading just one paragraph. . . .
