JavaScript&jQuery.DOM事件監聽器
阿新 • • 發佈：2018-07-07
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<script>
var elbtn = document.getElementById(‘a‘);
elbtn.addEventListener(‘click‘, msg, false);
function msg(){
alert("DOM事件監聽器");
}
</script>
</body>
</html>
<head>
<title>DOM事件監聽器2</title>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
</head>
<body>
<button id="a">按鈕</button>
<script>
var elbtn = document.getElementById(‘a‘);
elbtn.addEventListener(‘click‘, function () {
say(‘DOM‘);
}, false);
function say(name) {
alert(‘你好,‘ + name + "！");
}
</script>
</body>
</html>
DOM是事件監聽器
DOM事件監聽器予許一個事件觸發多個方法，在實際工作中應用比較多。
<!DOCTYPE html>
<html>
<head>
<title>DOM事件監聽器1</title>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
</head>
<body>
<button id=‘a‘>按鈕</button>
<script>
var elbtn = document.getElementById(‘a‘);
elbtn.addEventListener(‘click‘, msg, false);
function msg(){
alert("DOM事件監聽器");
}
</script>
</body>
</html>
在監聽器中調用到參數函數
<!DOCTYPE html>
<html>
<head>
<title>DOM事件監聽器2</title>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
</head>
<body>
<button id="a">按鈕</button>
<script>
var elbtn = document.getElementById(‘a‘);
elbtn.addEventListener(‘click‘, function () {
say(‘DOM‘);
}, false);
function say(name) {
alert(‘你好,‘ + name + "！");
}
</script>
</body>
</html>
JavaScript&jQuery.DOM事件監聽器