<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>闭包之计时器</title>
</head>
<body>
<p>局部变量计数。</p>
<button type="button" onclick="myFunction()">计数!</button>
<p id="demo">0</p>
<script>
var add = (function () {
var counter = 0;
return function () {return counter += 1;}
})();
function myFunction(){
document.getElementById("demo").innerHTML = add();
}
</script>
</body>
</html>
闭包之计时器
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转载自www.cnblogs.com/Longhua-0/p/9101370.html
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