(编辑:jimmy 日期: 2024/10/31 浏览:2)
原生JS实现鼠标按下拖拽效果,供大家参考,具体内容如下
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <meta http-equiv="X-UA-Compatible" content="ie=edge"> <title>鼠标拖动</title> <style type="text/css"> body { margin: 0; } div { width: 200px; height: 200px; position: absolute; background-color: pink; } </style> </head> <body> <div onmousedown="downDiv(this)" onmousemove="moveDiv(this)" onmouseup="upDiv(this)"> </div> <script> //定义变量储存div的宽高 var obj_w, obj_h; //定义一个变量判断是否执行移动函数 var mouseDown = false; //鼠标按下函数 function downDiv(obj) { //获取div的宽高 obj_w = obj.offsetWidth; obj_h = obj.offsetHeight; //鼠标 var e = event || window.event; //e.clientX/Y 是获取鼠标相对浏览器的位置;将div中心自动居中到鼠标 obj.style.left = (e.clientX - obj_w / 2) + "px"; obj.style.top = (e.clientY - obj_h / 2) + "px"; console.log(obj.style.left, obj.style.top) //按下时为ture,松开时为false,以判断是否执行执行mouveDiv mouseDown = true; } //鼠标移动函数 function moveDiv(obj) { obj_w = obj.offsetWidth; obj_h = obj.offsetHeight; var e = event || window.event; console.log(e.clientX, e.clientY); console.log(obj_w, obj_h); if (mouseDown) { obj.style.left = (e.clientX - obj_w / 2) + "px"; obj.style.top = (e.clientY - obj_h / 2) + "px"; console.log(obj.style.left, obj.style.top) } } //鼠标松开函数 function upDiv(obj) { mouseDown = false; } </script> </body> </html>
更多精彩文章请点击专题: Javascript拖拽特效汇总
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持。