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<html> |
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<head> |
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<title>键盘方向键控制表格</title> |
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</head> |
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<body onKeyDown="keyCheck();"> |
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<table width="80" bgcolor="#FFFFFF" height="60" border="1" bordercolor="#FFFFFF" cellpadding="0" cellspacing="0"> |
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<tr> |
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<td id="td1" width="80">第一行</td> |
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</tr> |
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<tr> |
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<td id="td2" width="80">第二行</td> |
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</tr> |
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<tr> |
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<td id="td3" width="80">第三行</td> |
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</tr> |
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<tr> |
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<td id="td4" width="80">第四行</td> |
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</tr> |
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<tr> |
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<td id="td5" width="80">第五行</td> |
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</tr> |
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<tr> |
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<td id="td6" width="80">第六行</td> |
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</tr> |
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</table> |
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<script language="javascript"> |
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var tdIndex = 1; //获取当前行的索引变量 |
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document.all.td1.style.backgroundColor='#3366aa'; //设置列1的背景色 |
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function keyCheck() { |
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if (window.event.keyCode==38) { //向上键 |
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for (var i=1;i<=6;i++) { |
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eval("document.all.td"+i+".style.backgroundColor='#FFFFFF'");//更改所有的行背景色 |
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} |
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if (tdIndex<=1) { |
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document.all.td1.style.backgroundColor='#3366aa'; //到顶端时，只第一行颜色改变 |
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alert('已到顶端'); |
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return false; |
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} |
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else { |
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tdIndex -= 1; //行索引减小 |
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eval("document.all.td"+tdIndex+".style.backgroundColor='#3366aa'");//改变行的背景色 |
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} |
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} |
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if (window.event.keyCode==40) { //向下键 |
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for (var i=1;i<=6;i++) { |
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eval("document.all.td"+i+".style.backgroundColor='#FFFFFF'");//更改所有的行背景色 |
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} |
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if (tdIndex>=6) { |
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document.all.td6.style.backgroundColor='#3366aa'; //到顶端时，只第一行颜色改变 |
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alert('已到底端'); |
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return false; |
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} |
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else { |
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tdIndex += 1; //行索引增加 |
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eval("document.all.td"+tdIndex+".style.backgroundColor='#3366aa'");//改变行的背景色 |
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} |
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} |
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} |
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</script> |
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</body> |
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</html> |
