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我認爲這是工作,但不是真的。我也不認爲這是最好的方法。如何脈衝圖像並改變脈衝率?
定時器作爲另一個功能運行,同時有能力改變圖像的脈衝速率。
我試圖使用gif而不是因爲它們具有不同的速度,在圖像之間切換時沒有平滑過渡。
<!DOCTYPE HTML>
<html>
<head>
<meta charset="utf-8">
<script type="text/javascript" src="https://code.jquery.com/jquery-latest.js"></script>
<style>
#red-square {
position: absolute;
display: inline-block;
z-index: 1;
top : 200px;
right: 200px;
height: 100px;
width: 100px;
background-color: red;
}
</style>
</head>
<body>
<div id="result"></div>
<div id="red-square"></div>
<button onclick="speedOne();">speed one</button>
<button onclick="speedTwo();">speed two</button>
<button onclick="speedThree();">speed three</button>
<script>
var counter = 0,
stopTimeoutTwo = null,
stopTimeoutThree = null,
currentSpeed = "speed one";
function runCounter() {
counter++;
result.textContent = counter;
if(currentSpeed == "speed one") {
if((counter%60) == 0) {
$("#red-square").hide();
}else if((counter%60) != 0) {
$("#red-square").show();
}
}
else if(currentSpeed = "speed two") {
if((counter%45) == 0) {
$("#red-square").hide();
}else if((counter % 45) != 0) {
$("#red-square").show();
}
}else if(currentSpeed = "speed three") {
if((counter%30) == 0) {
$("#red-square").hide();
}else if((counter%30) != 0) {
$("#red-square").show();
}
}
if(counter < 1e5) timer = setTimeout(runCounter, 0);
}
runCounter();
function stepOne() {
currentSpeed = "speed one";
}
function stepTwo() {
currentSpeed = "speed two";
}
function stepThree() {
currentSpeed = "speed three";
}
</script>
</body>
</html>
使用__ [setInterval](http://www.w3schools.com/jsref/met_win_setinterval.asp)__當點擊速度,改變間隔... –