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/...
代码语言:javascript 复制 //获取Select选择的TextvarcheckText=jQuery("#select_id").find("option:selected").text();//获取Select选择的option ValuevarcheckValue=jQuery("#select_id").val();//获取Select选择的索引值varcheckIndex=jQuery("#select_id ").get(0).selectedIndex;//获取Select最大的索引值...
with jQuery</title> </head> <body> <select id='myColor'> <option value="Red">Red</option> <option value="Blue">Blue</option> <option value="Green">Green</option> </select> <input type="button" value="Click to Remove all Options" onclick="Remove_options()"/> </body> </html...
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 = $("#select1 option");//获取选中的选项 ...
(function(){$(":button").click(function() {$("select option").each(function() {text = $(this).text();if($("select option:contains("+text+")").length > 1)$("select option:contains("+text+"):gt(0)").remove();});});})观察效果 初始状态 点击按钮删除重复项之后 ...
{ if($("#ddlregtype ").get(0).options[i].text == text) { $("#ddlregtype ").get(0).options[i].selected = true; break; } } $("#select_id option[text='jquery']").attr("selected", true); 设置select option项: $("#select_id").append("<option value='value'>text</option...
这个问题搞得头大,新增成功后 ,这个下拉框老清空不了,还是要看文档啊,在这里记录下 <v-select label="name" :options="advertisers" v-model="form.advertiser_id..." :reduce="name => name.id" ref="ad">...
Class Selector (“.class”) Selects all elements with the given class.Effects > Custom | Data | Utilities .clearQueue() Remove from the queue all items that have not yet been run.Events > Mouse Events click event Bind an event handler to the “click” event, or trigger that event ...
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