[問題] if設置
<!-- 讓東西掉下來 -->
<img id="bigStone" src="4.jpg" style="width:5em; height:5em; position:
relative;">
<script type="text/javascript">
var stone = document.getElementById("bigStone");
function comedown() {
var posDown = parseInt(stone.style.bottom).toString() == "NaN" ? 0 :
parseInt(stone.style.bottom);
stone.style.bottom = (posDown - 1) + "px";
if (parseInt(stone.style.top) == (plane.style.height)) {
clearInterval(stone);
stone.style.top = "0px";
}
setInterval("comedown()", 10);
</script>
<-- plane是另一張圖片 -->
扣除if那行 他圖片會一直往下掉 但網頁一直往下捲動
我希望他碰到plane那張圖時 就會停止
請問我該如何修正
新手請大家多指教...
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