本文實例講述了javascript定時器的簡單應用。分享給大家供大家參考，具體如下：
<!DOCTYPE html><html lang="en"><head> <meta charset="UTF-8"> <title>www.survivalescaperooms.com 定時器的應用</title> <style> #Div1 { width: 100px; height: 100px; position: absolute; background-color: red; top: 50px; } </style></head><body><input id="oBtn1" type="button" value="銨鈕"><div id="Div1"></div><script> var oBtn = document.getElementById("oBtn1"); var oDiv = document.getElementById("Div1"); //var timer=null; //oDiv.timer=null; oBtn.onclick = function() { clearInterval(oDiv.timer) oDiv.timer = setInterval(function() { var speed = parseInt(getStyle(oDiv, "left")) + 9; if(speed > 800) { speed = 800; } oDiv.style.left = speed + "px" if(speed == 800) { clearInterval(oDiv.timer); //alert(speed) } }, 50) } function getStyle(obj, attr) { return obj.currentStyle ? obj.currentStyle[attr] : getComputedStyle(obj)[attr] }</script></body></html>
希望本文所述對大家JavaScript程序設計有所幫助。
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