四种方法:(以下child指某select)1、循环将option赋值为null;function delAllItems(child) { for(var i=child.options.length-1; i>=0; i--) { child.options[i] = null; } }2、循环用remove将option删除掉function delAllItems(ch javascript 清空对象 ...
<!DOCTYPE html> <html> <head lang="en"> <meta charset="UTF-8"> <title></title> <style> select { width: 200px; background-color: teal; height: 200px; font-size: 20px; } .btn-box { width: 30px; display: inline-block; vertical-align: top; } </style> <script src="vendor/...
</select> </span> <input type="button" value="Add" title="add" id="add_em" /> <input type="button" value="Remove" title="remove" id="remove_em" /> <span class="left"> <b>two</b><br /> <select size="8" id="select_2" name="select_2[]" multiple="multiple"> <option...
(function(){$(":button").click(function() {$("select option").each(function() {text = $(this).text();if($("select option:contains("+text+")").length > 1)$("select option:contains("+text+"):gt(0)").remove();});});})观察效果 初始状态 点击按钮删除重复项之后 ...
select_id option:last").remove();//删除Select中索引值为0的Option(第一个)jQuery("#select_id option[index='0']").remove();//删除Select中Value='3'的OptionjQuery("#select_id option[value='3']").remove();//删除Select中Text='4'的OptionjQuery("#select_id option[text='4']").remove(...
var$options = $("#select1 option:selected");//获取选中的选项 //var $remove = $options.remove(); //删除下拉列表中选中的选项 $options.appendTo("#select2");//追加到select2 }) $("#add_all").click(function() { var$options = $("#select1 option");//获取选中的选项 ...
jQuery Practical exercise Part - I : Exercise-15Using jQuery remove all the options of a select box and then add one option and select it.Sample solution :HTML Code :<!DOCTYPE html> <html> <head> <script src="https://code.jquery.com/jquery-git.js"></script> <meta charset="utf-8"...
get(0).options.length=0; 6、两个select 框之间互相添加删除,从左边到右边,从右边到左边的操作,通常是多选情况。 代码语言:javascript 代码运行次数:0 复制Cloud Studio 代码运行 var $options = $('#select1 option:selected'); //获取当前选中的项 var $remove = $options.remove(); //删除下拉列表中...
:tabbable SelectorSelects elements which can be tabbed to. uniqueIdFunctions to generate and remove uniqueId's Interactions Toggle All These add basic behaviors to any element and are used by many components below. DraggableEnables dragging functionality for any element. ...
linkRemovedaddandremovemethods; userefresh (#7158) Theaddandremovemethods have been removed in favor ofrefresh. Seethe 1.9 deprecation noticefor full details. linkRemovedidPrefix,tabTemplate, andpanelTemplateoptions; userefreshmethod (#7157) TheidPrefix,tabTemplate, andpanelTemplateoptions have been rem...