4.12 滑鼠相關事件
click 事件
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
</head>
<body>
<button type="button" id="mybtn">按鈕</button>
<script>
var my_btn_el = document.getElementById("mybtn");
my_btn_el.addEventListener("click", function(){
alert("test");
});
</script>
</body>
</html>使用 JS 來觸發 click 事件
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