| <!DOCTYPE html> |
| <html> |
| <head> |
| <style> |
| body { |
| background-color: rgb(255, 255, 255); |
| } |
| |
| .box { |
| width: 100px; |
| height: 100px; |
| } |
| </style> |
| </head> |
| <body> |
| <div> |
| <div class="box" tabindex="-1" id="box0"></div> |
| <div class="box" tabindex="-1" id="box1"></div> |
| <div class="box" tabindex="-1" id="box2"></div> |
| </div> |
| |
| <script> |
| box0 = document.getElementById("box0") |
| box1 = document.getElementById("box1") |
| box2 = document.getElementById("box2") |
| |
| box0.addEventListener("focus", function(){ |
| box0.style.background = "#FF5468"; |
| }); |
| box0.addEventListener("blur", function(){ |
| box0.style.background = "#FFF"; |
| }); |
| |
| box1.addEventListener("focus", function(){ |
| box1.style.background = "#FABE4D"; |
| }); |
| box1.addEventListener("blur", function(){ |
| box1.style.background = "#FFF"; |
| }); |
| |
| box2.addEventListener("focus", function(){ |
| box2.style.background = "#4DFA90"; |
| }); |
| box2.addEventListener("blur", function(){ |
| box2.style.background = "#FFF"; |
| }); |
| |
| i = 1; |
| handle = window.setTimeout(callback, 500); |
| function callback() { |
| i = (i + 2) % 3; |
| document.getElementById("box" + i).focus(); |
| handle = window.setTimeout(callback, 1000); |
| } |
| </script> |
| </body> |
| </html> |
