js智力小游戏
<style>
#board {cursor: default}
#board TD {width: 25px; height: 25px; }
</style>
<script language="JavaScript">
var size=10
var moves = 0
var off = size*2
var on = 0
var current = null
function doOver() {
if ((event.srcElement.tagName=="TD") && (current!=event.srcElement)) {
if (current!=null)
current.style.backgroundColor = current._background
event.srcElement._background = event.srcElement.style.backgroundColor
event.srcElement.style.backgroundColor = "lightgrey"
current = event.srcElement
}
}
function setColor(el) {
if ((el._background=="") || (el._background==null)) {
el.style.backgroundColor = "yellow"
el._background = "yellow"
} else {
el.style.backgroundColor = ""
el._background = ""
}
}
function countLights() {
off = 0; on = 0
for (var x=0; x < size; x++)
for (var y=0; y < size; y++) {
var p = board.rows[x].cells[y]
if (p._background=="yellow")
on++
else
off ++
}
document.all.on.innerText = on
if (off!=0)
document.all.off.innerText = off
else
document.all.off.innerText = "你赢了！"
return (off==0)
}
function doClick() {
setColor(current)
var cellIdx = current.cellIndex
var rowIdx = current.parentElement.rowIndex
if (rowIdx>0)
setColor(board.rows[rowIdx-1].cells[cellIdx])
if (rowIdx<size-1)
setColor(board.rows[rowIdx+1].cells[cellIdx])
if (cellIdx>0)
setColor(board.rows[rowIdx].cells[cellIdx-1])
if (cellIdx<size-1)
setColor(board.rows[rowIdx].cells[cellIdx+1])
moves++
document.all.moves.innerText = moves
win = countLights()
if (win) {
board.onclick = null
board.onmouseover = null
current.style.background = "yellow"
}
}
function buildBoard() {
var str = "<TABLE ID=board ONSELECTSTART="return false" ONCLICK="doClick()" ONMOUSEOVER="doOver()" cellspacing=0 cellpadding=0 border=5>"
for (var x=0; x < size; x++) {
str+="<TR>"
for (var y=0; y < size; y++) {
str+="<TD> </TD>"
}
str+="</TR>"
}
str+="</TABLE>"
return str
}
function newGame() {
size = document.all.gameSize.value
if (size<3)
size=3
if (size>15)
size=15
document.all.gameSize.value = size
document.all.board.outerHTML = buildBoard()
moves=0
document.all.moves.innerText = moves
countLights()
}
</script>
<p align="center"><font color="#0000FF">在方格上点击，你可以将下面的方格全部填成黄色吗？</font></p>
<p align="center"><font color="#0000FF">快开动你智慧脑筋，看看有什么技巧与规律。</font></p>
<table border="1" width="100%">
<tr>
<td width="50%"><div align="right"><table ID="score" border="0" width="284">
<tr>
<td width="52">移动: </td>
<td id="moves" width="33">0</td>
<td width="42">灯灭:</td>
<td id="off" width="36">25</td>
<td width="46">灯亮:</td>
<td id="on" width="39">0</td>
</tr>
</table>
</div></td>
<td width="50%"><div align="left"><table width="204">
<tr>
<td width="54">大小: </td>
<td width="41"><input ID="gameSize" TYPE="text" VALUE="10" SIZE="2"></td>
<td width="97"><input ONCLICK="newGame()" TYPE="button" VALUE="开始游戏"></td>
</tr>
</table>
</div></td>
</tr>
</table>
<p align="center">
<script language="JavaScript">
document.write(buildBoard())
</script></p>