Some time ago, the project needed to use two-way list selection. I wanted to use select directly. It turned out that some styles were not supported, so I had to use div to simulate the following. The function was basically implemented and available. You need to add other functions by yourself, such as displaying multiple items in the list. Column data, etc.
<!doctype html> <html> <head> <meta charset="utf-8"> <title>双向列表选择器DIV模拟</title> <script type="text/javascript" src="../public/jquery-1.8.2.js"></script> <script type="text/javascript"> /** * two_way_list_selector.js - v1.0.0 (2016/7/26) * * Allows you to easily page layout! * by tie. qq:2185987263 * * Copyright (C) 2016, tie. * All rights reserved. * **/ var two_way_list_selector=function(o){ var obj=o; var btn_a=o.find(".btn_a"); var btn_b=o.find(".btn_b"); var btn_c=o.find(".btn_remove_all"); var btn_d=o.find(".btn_add_all"); var select_a=o.find(".select_a"); var select_b=o.find(".select_b"); //是否按下了shift var is_shift=false; //是否按下了ctrl var is_ctrl=false; document.addEventListener("keydown",function(e){ is_shift=e.shiftKey; is_ctrl=e.ctrlKey; },false); document.addEventListener("keyup",function(e){ is_shift = is_ctrl = false; },false); //进行排序 var option_sort=function(o){ o.html(o.find("div").toArray().sort(function(a, b){ return parseInt($(a).attr("data-index")) - parseInt($(b).attr("data-index")); })); obj.find(".item").removeClass("is_select"); obj.find(".item").unbind("dblclick").dblclick(function(){ _dblclick($(this)); }); obj.find(".item").unbind("click").click(function(){ _click($(this)); }); } //在列表中双击时 var _dblclick=function(o){ var flag = o.parent().attr("class"); var a ; if(flag == "select_a"){ a = o.clone(true); select_b.append(a); o.remove(); option_sort(select_b); } else { a = o.clone(true); select_a.append(a); o.remove(); option_sort(select_a); } } //在列表中单击时 var temp_index=0; var _click=function(o){ var flag=o.parent().attr("class"); if(is_shift){ var this_index=o.index(); if(temp_index!=this_index){ obj.find("."+flag+" .item").each(function(index, element) { if(this_index>temp_index && index<this_index && index>=temp_index){ $(this).addClass("is_select"); } if(this_index<temp_index && index>this_index && index<=temp_index){ $(this).addClass("is_select"); } }); } } if(!is_ctrl && !is_shift){ obj.find("."+flag+" .item").each(function() { $(this).removeClass("is_select"); }); } if(o.hasClass("is_select")){ o.removeClass("is_select"); }else{ o.addClass("is_select"); } temp_index=o.index(); } //选项单击时 obj.find(".item").click(function(){ _click($(this)); }); //选项双击时 obj.find(".item").dblclick(function(){ _dblclick($(this)); }); //加入选中 btn_a.click(function(){ var a = select_a.find(".is_select").clone(true); if(a.size() == 0){ return false; } select_b.append(a); select_a.find(".is_select").remove(); option_sort(select_b); }); //删除选中 btn_b.click(function(){ var a = select_b.find(".is_select").clone(true); if(a.size() == 0){ return false; } select_a.append(a); select_b.find(".is_select").remove(); option_sort(select_a); }); //删除全部 btn_c.click(function(){ select_a.append(select_b.find("div")); option_sort(select_a); }); //加入全部 btn_d.click(function(){ select_b.append(select_a.find("div")); option_sort(select_b); }); } //页面加载完毕后 $(document).ready(function(e) { two_way_list_selector($("#two_way_list_selector_a")); two_way_list_selector($("#two_way_list_selector_b")); }); </script> <style type="text/css"> @charset "utf-8"; .two_way_list_selector { width: 100%; height: 250px; } .two_way_list_selector .select_l, .two_way_list_selector .select_r { width: 40%; height: 250px; float: left; border: 1px solid #CCC; } .two_way_list_selector .select_l .option { height: 29px; line-height: 29px; border-bottom: 1px solid #ddd; } .two_way_list_selector .select_l .option .l { width: 30%; float: left; text-indent: 10px; } .two_way_list_selector .select_l .option .r { width: 70%; float: right; text-align: center; } .two_way_list_selector .select_l .select_a, .two_way_list_selector .select_r .select_b { width: 100%; height: 220px; overflow: auto; } .two_way_list_selector .select_r .select_b { height: 250px; } .two_way_list_selector .select_l .select_a div, .two_way_list_selector .select_r .select_b div { padding: 10px; height: 25px; line-height: 25px; border-bottom: 1px solid #ddd; background: #FFF; } .two_way_list_selector .select_l .select_a div:last-child, .two_way_list_selector .select_r .select_b div:last-child { border-bottom: none; } .two_way_list_selector .select_btn { width: 10%; height: 250px; float: left; display: table; text-align: center; } .two_way_list_selector .select_btn div { height: 250px; display: table-cell; vertical-align: middle; } .two_way_list_selector .select_btn div input { width: 90%; margin: 1px; text-align: center; font-weight: 100; color: #999; } .two_way_list_selector .select_l .select_a .is_select, .two_way_list_selector .select_r .select_b .is_select { color: #FFF; background: #3399FF; } </style> </head> <body> <div id="two_way_list_selector_a" class="two_way_list_selector margin_top_10"> <div class="select_l"> <div class="option"> <div class="l">名称</div> <div class="r"><a>数量</a></div> </div> <div class="select_a"> <div data-value="1" data-index="0" class="item">1</div> <div data-value="2" data-index="1" class="item">2</div> <div data-value="3" data-index="2" class="item">3</div> <div data-value="4" data-index="3" class="item">4</div> <div data-value="5" data-index="4" class="item">5</div> <div data-value="6" data-index="5" class="item">6</div> <div data-value="7" data-index="6" class="item">7</div> </div> </div> <div class="select_btn"> <div> <input type="button" value=">" class="button btn_a"> <input type="button" value=">>" class="button btn_add_all"> <input type="button" value="<<" class="button btn_remove_all"> <input type="button" value="<" class="button btn_b"> </div> </div> <div class="select_r"> <div class="select_b"></div> </div> </div> <br> <div id="two_way_list_selector_b" class="two_way_list_selector margin_top_10"> <div class="select_l"> <div class="option"> <div class="l">名称</div> <div class="r"><a>数量</a></div> </div> <div class="select_a"> <div data-value="a" data-index="0" class="item">a</div> <div data-value="b" data-index="1" class="item">b</div> <div data-value="c" data-index="2" class="item">c</div> <div data-value="d" data-index="3" class="item">d</div> <div data-value="e" data-index="4" class="item">e</div> <div data-value="f" data-index="5" class="item">f</div> <div data-value="g" data-index="6" class="item">g</div> </div> </div> <div class="select_btn"> <div> <input type="button" value=">" class="button btn_a"> <input type="button" value=">>" class="button btn_add_all"> <input type="button" value="<<" class="button btn_remove_all"> <input type="button" value="<" class="button btn_b"> </div> </div> <div class="select_r"> <div class="select_b"></div> </div> </div> </body> </html>
The above is the jQuery two-way list selector DIV simulation version introduced by the editor. I hope it will be helpful to everyone

实现方法:1、用“$("img").delay(毫秒数).fadeOut()”语句,delay()设置延迟秒数;2、用“setTimeout(function(){ $("img").hide(); },毫秒值);”语句,通过定时器来延迟。

修改方法:1、用css()设置新样式,语法“$(元素).css("min-height","新值")”;2、用attr(),通过设置style属性来添加新样式,语法“$(元素).attr("style","min-height:新值")”。

区别:1、axios是一个异步请求框架,用于封装底层的XMLHttpRequest,而jquery是一个JavaScript库,只是顺便封装了dom操作;2、axios是基于承诺对象的,可以用承诺对象中的方法,而jquery不基于承诺对象。

增加元素的方法:1、用append(),语法“$("body").append(新元素)”,可向body内部的末尾处增加元素;2、用prepend(),语法“$("body").prepend(新元素)”,可向body内部的开始处增加元素。

删除方法:1、用empty(),语法“$("div").empty();”,可删除所有子节点和内容;2、用children()和remove(),语法“$("div").children().remove();”,只删除子元素,不删除内容。

在jquery中,apply()方法用于改变this指向,使用另一个对象替换当前对象,是应用某一对象的一个方法,语法为“apply(thisobj,[argarray])”;参数argarray表示的是以数组的形式进行传递。

去掉方法:1、用“$(selector).removeAttr("readonly")”语句删除readonly属性;2、用“$(selector).attr("readonly",false)”将readonly属性的值设置为false。

on()方法有4个参数:1、第一个参数不可省略,规定要从被选元素添加的一个或多个事件或命名空间;2、第二个参数可省略,规定元素的事件处理程序;3、第三个参数可省略,规定传递到函数的额外数据;4、第四个参数可省略,规定当事件发生时运行的函数。


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