獲取滑鼠的盒子內部座標及拖動模態框
阿新 • • 發佈：2022-01-10
滑鼠在盒子內的座標=滑鼠在頁面的座標-盒子在頁面的座標
css:
<style>
div {
width: 300px;
height: 300px;
margin: 200px;
}
</style>
html:
<body>
<div></div>
<script>
var div = document.querySelector('div')
div.addEventListener('mousemove', function (e) {
console.log(e.pageX); //滑鼠在頁面中的座標
console.log(e.pageY);
console.log(this.offsetLeft); //盒子在頁面中的座標
console.log(this.offsetTop);
var x = e.pageX - this.offsetLeft
var y = e.pageY - this.offsetTop
this.innerHTML = '滑鼠的x座標是:' + x + '; y座標是:' + y
})
</script>
</body>
拖動模態框:
效果圖
ul, li, ol, dl, dt, dd, div, p, span, h1, h2, h3, h4, h5, h6, a { padding: 0px; margin: 0px; }
.login { display: none; width: 512px; height: 280px; position: fixed; border: #ebebeb solid 1px; left: 50%; top: 50%; background: #ffffff; box-shadow: 0px 0px 20px #ddd; z-index: 9999; transform: translate(-50%, -50%); }
.login-title { width: 100%; margin: 10px 0px 0px 0px; text-align: center; line-height: 40px; height: 40px; font-size: 18px; position: relative; cursor: move; }
.login-input-content { margin-top: 20px; }
.login-button { width: 50%; margin: 30px auto 0px auto; line-height: 40px; font-size: 14px; border: #ebebeb 1px solid; text-align: center; }
.login-bg { display: none; width: 100%; height: 100%; position: fixed; top: 0px; left: 0px; background: rgba(0, 0, 0, .3); }
a { text-decoration: none; color: #000000; }
.login-button a { display: block; }
.login-input input.list-input { float: left; line-height: 35px; height: 35px; width: 350px; border: #ebebeb 1px solid; text-indent: 5px; }
.login-input { overflow: hidden; margin: 0px 0px 20px 0px; }
.login-input label { float: left; width: 90px; padding-right: 10px; text-align: right; line-height: 35px; height: 35px; font-size: 14px; }
.login-title span { position: absolute; font-size: 12px; right: -20px; top: -30px; background: #ffffff; border: #ebebeb solid 1px; width: 40px; height: 40px; border-radius: 20px; } </style> </head>
<body> <div class="login-header"> <a id="link" href="javascript:;">點選,彈出登入框</a></div> <div class="login" id="login"> <div class="login-title" id="title">登入會員 <span> <a href="javascript:void(0);" id="closeBtn" class="close-login">關閉</a></span> </div> <div class="login-input-content"> <div class="login-input"> <label>使用者名稱:</label> <input type="text" placeholder="請輸入使用者名稱:" name="info[username]" id="username" class="list-input"> </div> <div class="login-input"> <label for="">登入密碼:</label> <input type="password" placeholder="請輸入登入密碼" name="info[password]" id="password" class="list-input"> </div> </div> <div id="loginBtn" class="login-button"><a href="javascript:void(0)" id="login-button-submit"></a></div> </div> <!-- 遮蓋層 --> <div class="login-bg" id="bg"></div> <script> var login = document.querySelector('.login'); var mask = document.querySelector('.login-bg'); var link = document.querySelector('#link') var closeBtn = document.querySelector('#closeBtn') var title = document.querySelector('#title') //點選開啟模態框 link.addEventListener('click', function () { mask.style.display = 'block'; login.style.display = 'block'; }) //點選隱藏模態框 closeBtn.addEventListener('click', function () { mask.style.display = 'none'; login.style.display = 'none'; }) //拖拽效果 :滑鼠按下mousedown 滑鼠移動mousemove 滑鼠抬起mouseup //滑鼠的座標 減去 滑鼠在盒子內的座標, 就是模態框真正的座標位置 //1.滑鼠按下 獲得滑鼠在盒子內的座標(滑鼠在頁面的座標減去盒子在頁面的座標) title.addEventListener('mousedown', function (e) { var x = e.pageX - login.offsetLeft; var y = e.pageY - login.offsetTop; //2.滑鼠移動的時候,把滑鼠在頁面中的(變化的)座標,減去,滑鼠在盒子內的(不變的)座標 document.addEventListener('mousemove', move) function move(e) {//給login模組的座標賦值,必須使用style屬性而不是offsetleft login.style.left = e.pageX - x + 'px'; login.style.top = e.pageY - y + 'px'; } //滑鼠彈起,就讓滑鼠移動事件移除 title.addEventListener('mouseup', function () { document.removeEventListener('mousemove', move) }) })
</script> </body>
程式碼:
<head>
<style> .login-header { width: 100%; text-align: center; height: 30px; font-size: 24px; line-height: 30px; }ul, li, ol, dl, dt, dd, div, p, span, h1, h2, h3, h4, h5, h6, a { padding: 0px; margin: 0px; }
.login { display: none; width: 512px; height: 280px; position: fixed; border: #ebebeb solid 1px; left: 50%; top: 50%; background: #ffffff; box-shadow: 0px 0px 20px #ddd; z-index: 9999; transform: translate(-50%, -50%); }
.login-title { width: 100%; margin: 10px 0px 0px 0px; text-align: center; line-height: 40px; height: 40px; font-size: 18px; position: relative; cursor: move; }
.login-input-content { margin-top: 20px; }
.login-button { width: 50%; margin: 30px auto 0px auto; line-height: 40px; font-size: 14px; border: #ebebeb 1px solid; text-align: center; }
.login-bg { display: none; width: 100%; height: 100%; position: fixed; top: 0px; left: 0px; background: rgba(0, 0, 0, .3); }
a { text-decoration: none; color: #000000; }
.login-button a { display: block; }
.login-input input.list-input { float: left; line-height: 35px; height: 35px; width: 350px; border: #ebebeb 1px solid; text-indent: 5px; }
.login-input { overflow: hidden; margin: 0px 0px 20px 0px; }
.login-input label { float: left; width: 90px; padding-right: 10px; text-align: right; line-height: 35px; height: 35px; font-size: 14px; }
.login-title span { position: absolute; font-size: 12px; right: -20px; top: -30px; background: #ffffff; border: #ebebeb solid 1px; width: 40px; height: 40px; border-radius: 20px; } </style> </head>
<body> <div class="login-header"> <a id="link" href="javascript:;">點選,彈出登入框</a></div> <div class="login" id="login"> <div class="login-title" id="title">登入會員 <span> <a href="javascript:void(0);" id="closeBtn" class="close-login">關閉</a></span> </div> <div class="login-input-content"> <div class="login-input"> <label>使用者名稱:</label> <input type="text" placeholder="請輸入使用者名稱:" name="info[username]" id="username" class="list-input"> </div> <div class="login-input"> <label for="">登入密碼:</label> <input type="password" placeholder="請輸入登入密碼" name="info[password]" id="password" class="list-input"> </div> </div> <div id="loginBtn" class="login-button"><a href="javascript:void(0)" id="login-button-submit"></a></div> </div> <!-- 遮蓋層 --> <div class="login-bg" id="bg"></div> <script> var login = document.querySelector('.login'); var mask = document.querySelector('.login-bg'); var link = document.querySelector('#link') var closeBtn = document.querySelector('#closeBtn') var title = document.querySelector('#title') //點選開啟模態框 link.addEventListener('click', function () { mask.style.display = 'block'; login.style.display = 'block'; }) //點選隱藏模態框 closeBtn.addEventListener('click', function () { mask.style.display = 'none'; login.style.display = 'none'; }) //拖拽效果 :滑鼠按下mousedown 滑鼠移動mousemove 滑鼠抬起mouseup //滑鼠的座標 減去 滑鼠在盒子內的座標, 就是模態框真正的座標位置 //1.滑鼠按下 獲得滑鼠在盒子內的座標(滑鼠在頁面的座標減去盒子在頁面的座標) title.addEventListener('mousedown', function (e) { var x = e.pageX - login.offsetLeft; var y = e.pageY - login.offsetTop; //2.滑鼠移動的時候,把滑鼠在頁面中的(變化的)座標,減去,滑鼠在盒子內的(不變的)座標 document.addEventListener('mousemove', move) function move(e) {//給login模組的座標賦值,必須使用style屬性而不是offsetleft login.style.left = e.pageX - x + 'px'; login.style.top = e.pageY - y + 'px'; } //滑鼠彈起,就讓滑鼠移動事件移除 title.addEventListener('mouseup', function () { document.removeEventListener('mousemove', move) }) })
</script> </body>