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純J拖動案例

onmouseup nav on() size script rem emp register fff

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<!DOCTYPE html>
<html>
<head lang="en">
    <meta charset="UTF-8">
    <title></title>
    <style>
        *{margin:0;padding:0;}
        .nav{
            height:30px;
            background: #036663;
            border-bottom:1px solid #369;
            line-height: 30px;
            padding
-left:30px; } .nav a { color:#fff; text-align: center; font-size:14px; text-decoration: none; } .d-box{ width:400px; height:300px; border:5px solid #eee; box-shadow:2px 2px 2px 2px #666; position: absolute; top:
50%; left:50%; margin-top: -155px; margin-left:-205px; } .hd{ width:100%; height:25px; background-color: #7c9299; border-bottom:1px solid #369; line-height: 25px; color:white; cursor: move; } #box_close{
float: right; cursor: pointer; } </style> </head> <body> <div class="nav"> <a href="javascript:;" id="register">註冊信息</a> </div> <div class="d-box" id="d_box"> <div class="hd" id="drop">註冊信息 (可以拖拽) <span id="box_close">【關閉】</span> </div> <div class="bd"></div> </div> </body> </html> <script> var box = document.getElementById("d_box"); var drop = document.getElementById("drop"); startDrop(drop,box); // 鼠標放到 drop 但是移動 是 box function startDrop(current,move) { current.onmousedown = function(event) { var event = event || window.event; var x = event.clientX - move.offsetLeft - 205; // 記錄當前盒子的x 位置 var y = event.clientY - move.offsetTop - 155; // // 記錄當前盒子的y位置 document.onmousemove = function(event) { var event = event || window.event; move.style.left = event.clientX - x + "px"; move.style.top = event.clientY - y + "px"; window.getSelection ? window.getSelection().removeAllRanges() : document.selection.empty(); } } document.onmouseup = function() { // 鼠標彈起之後, 鼠標繼續移動不應該操作 document.onmousemove = null; } }

純J拖動案例