本文實例講述了javascript上下方向鍵控製表格行選中並高亮顯示的方法。分享給大家供大家參考。具體實現方法如下：
<style>tr.highlight { background:#08246B; color:white;}</style><table id="ice"> <tr onClick="selectTR();return false;"> <td>123</td> <td>234</td> <td>abc</td> <td>def</td> </tr> <tr onClick="selectTR();"> <td>123</td> <td>234</td> <td>abc</td> <td>def</td> </tr> <tr onClick="selectTR();"> <td>123</td> <td>234</td> <td>abc</td> <td>def</td> </tr> <tr onClick="selectTR();"> <td>123</td> <td>234</td> <td>abc</td> <td>def</td> </tr> <tr onClick="selectTR();"> <td>123</td> <td>234</td> <td>abc</td> <td>def</td> </tr></table><script language="javascript"> <!-- var currentLine = -1; document.onkeydown = function(e) { e = window.event || e; switch(e.keyCode) { case 38: currentLine--; changeItem(); break; case 40: currentLine++; changeItem(); break; default: break; } } function selectTR(){ currentLine=window.event.srcElement.parentElement.rowIndex; //alert(currentLine); changeItem();}//改變選擇項目function changeItem() { if(document.all) var it = document.getElementById("ice").children[0]; else var it = document.getElementById("ice"); for(i=0;i<it.rows.length;i++) { it.rows[i].className = ""; } if(currentLine < 0) currentLine = it.rows.length - 1; if(currentLine == it.rows.length) currentLine = 0; it.rows[currentLine].className = "highlight"; } //--> </script>希望本文所述對大家的javascript程序設計有所幫助。