快活林资源网 Design By www.csstdc.com
本文实例为大家分享了js面向对象方式实现拖拽的具体代码,供大家参考,具体内容如下
拖拽功能的实现原理:(直接拿走!)
<!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>Document</title> <style> #box { position: absolute; left: 100px; top: 100px; width: 100px; height: 100px; background: red; } #box2 { position: absolute; left: 200px; top: 200px; width: 100px; height: 100px; background: green; } </style> </head> <body> <div id="box">文字</div> <div id="box2">文字</div> </body> <script> class Drag { startMouse = {}; startEl = {}; #el = null; constructor(el, option) { this.#el = el; this.option = option; this.start(); } start() { let move = (e) => { this.move(e) } this.#el.addEventListener('mousedown', (e) => { this.startMouse = { x: e.clientX, y: e.clientY, } this.ondragstart && this.ondragstart(e) this.startEl = this.getOffset(); document.addEventListener('mousemove', move); document.addEventListener('mouseup', (e) => { document.removeEventListener('mousemove', move); this.end(e); }, { once: true }) e.preventDefault(); }) } move(e) { let nowMouse = { x: e.clientX, y: e.clientY, } let disMouse = { x: nowMouse.x - this.startMouse.x, y: nowMouse.y - this.startMouse.y } this.ondrag && this.ondrag(e) this.setOffset(disMouse) } end(e) { this.ondragend && this.ondragend(e) } getOffset() { return { x: parseFloat(getComputedStyle(this.#el)["left"]), y: parseFloat(getComputedStyle(this.#el)["top"]) } } setOffset(dis) { this.#el.style.left = this.startEl.x + dis.x + 'px' this.#el.style.top = this.startEl.y + dis.y + 'px' } } let box = document.querySelector("#box"); let box2 = document.querySelector("#box2"); let d = new Drag(box); let d2 = new Drag(box2); let clonex = null; d2.ondragstart = (e) => { clonex = box2.cloneNode(true); document.body.appendChild(clonex) box2.style.opacity = 0.5 } d2.ondragend = () => { document.body.removeChild(clonex); box2.style.opacity = 1 } </script> </html>
最终效果(拖动的为绿色块)
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。
快活林资源网 Design By www.csstdc.com
广告合作:本站广告合作请联系QQ:858582 申请时备注:广告合作(否则不回)
免责声明:本站资源来自互联网收集,仅供用于学习和交流,请遵循相关法律法规,本站一切资源不代表本站立场,如有侵权、后门、不妥请联系本站删除!
免责声明:本站资源来自互联网收集,仅供用于学习和交流,请遵循相关法律法规,本站一切资源不代表本站立场,如有侵权、后门、不妥请联系本站删除!
快活林资源网 Design By www.csstdc.com
暂无评论...
更新日志
2024年05月17日
2024年05月17日
- 【佛之吧沙发】VA-BuddhaBar-BestOf2byRavin(FLAC)
- [ABC唱片]-《雪莉—蓝》[SACD-008][SACD][WAV+CUE]
- 黎瑞恩.2002-理想的日子精选2CD【环球】【WAV+CUE】
- 【驰放沙发(J)】VA-2024-WinterTime,Vol.12(FLAC)
- 雷婷《梦里蓝天HQⅡ》 2023头版限量编号低速原抓[WAV+CUE][463M]
- 韩红《青藏高原+红+韩红精选集》3CD[WAV分轨][1.7G]
- 高胜美《经典金选》1991-1994 4CD[WAV整轨][1.9G]
- 【迷幻电音】AstralWaves-2023-Singles,RemixesandRaritiesII(FLAC)
- 中唱唱片群星《好歌珍藏-游子情深》2CDWAV
- 张国荣.2011-极品天碟LPCD45II(雨果版)【环球】【WAV+CUE】
- 张学友《醒着做梦》[DFF][1.1G]
- 刘惜君 《如我》[WAV分轨][403M]
- 白玛多吉《梦》限量1:1母盘直刻[低速原抓WAV+CUE][508M]
- 魏金栋-金歌新曲-梦里全是桂花香2CD[天凡之音][WAV+CUE]
- 鲛岛有美子-樱花赋HQCD[天龙][WAV+CUE]