鑑於網上總結的資料排版差、總結混亂、版本陳舊,因此重新總結了一下經常使用的jQuery操做radio、checkbox、select,所用jQuery版本爲 jquery-1.4.2.min.js 。如下,按三種表單元素分別總結:javascript
一、radio:單選框html
HTML代碼:java
- <input type="radio" name="radio" id="radio1" value="1" />1
- <input type="radio" name="radio" id="radio2" value="2" />2
- <input type="radio" name="radio" id="radio3" value="3" />3
- <input type="radio" name="radio" id="radio4" value="4" />4
jquery
js操做代碼:app
- jQuery("input[type='radio'][name='radio']:checked").length == 0 ? "沒有任何單選框被選中" : "已經有選中";
- jQuery('input[type="radio"][name="radio"]:checked').val();
- jQuery("input[type='radio'][name='radio'][value='2']").attr("checked", "checked");
- jQuery("#radio2").attr("checked", "checked");
- jQuery("input[type='radio'][name='radio']").get(1).checked = true;
- var isChecked = jQuery("#radio2").attr("checked");
- var isChecked = jQuery("input[type='radio'][name='radio'][value='2']").attr("checked");
this
二、checkbox:複選框spa
HTML代碼:.net
- <input type="checkbox" name="checkbox" id="checkAll" />全選/取消全選
- <input type="checkbox" name="checkbox" id="checkbox_id1" value="1" />1
- <input type="checkbox" name="checkbox" id="checkbox_id2" value="2" />2
- <input type="checkbox" name="checkbox" id="checkbox_id3" value="3" />3
- <input type="checkbox" name="checkbox" id="checkbox_id4" value="4" />4
- <input type="checkbox" name="checkbox" id="checkbox_id5" value="5" />5
code
js操做代碼:xml
- var val = jQuery("#checkbox_id1").val();
- var isSelected = jQuery("#checkbox_id3").attr("checked");
- jQuery("#checkbox_id3").attr("checked", true);
- jQuery("#checkbox_id3").attr("checked", 'checked');
- jQuery("#checkbox_id3").attr("checked", false);
- jQuery("#checkbox_id3").attr("checked", '');
- jQuery("input[name=checkbox][value=3]").attr("checked", 'checked');
- jQuery("input[name=checkbox][value=3]").attr("checked", '');
- jQuery("input[type=checkbox][name=checkbox]").get(2).checked = true;
- jQuery("input[type=checkbox]:checked").each(function(){
- alert(jQuery(this).val());
- });
- jQuery(function() {
- jQuery("#checkAll").click(function(){
- if(jQuery(this).attr("checked") == true){
- jQuery("input[type=checkbox][name=checkbox]").each(function(){
- jQuery(this).attr("checked", true);
- });
- } else {
- jQuery("input[type=checkbox][name=checkbox]").each(function(){
- jQuery(this).attr("checked", false);
- });
- }
- });
- });
三、select:下拉框
HTML代碼:
- <select name="select" id="select_id" style="width: 100px;">
- <option value="1">11</option>
- <option value="2">22</option>
- <option value="3">33</option>
- <option value="4">44</option>
- <option value="5">55</option>
- <option value="6">66</option>
- </select>
js操做代碼:
- jQuery("#select_id").change(function(){
-
- });
- var checkValue = jQuery("#select_id").val();
- var checkText = jQuery("#select_id :selected").text();
- var checkIndex = jQuery("#select_id").attr("selectedIndex");
- var maxIndex = jQuery("#select_id :last").attr("index");
- jQuery("#select_id").get(0).selectedIndex = 1;
- jQuery("#select_id").val(4);
- jQuery("#select_id").append("<option value='新增'>新增option</option>");
- jQuery("#select_id").prepend("<option value='請選擇'>請選擇</option>");
- jQuery("#select_id").get(0).remove(1);
- jQuery("#select_id :last").remove();
- jQuery("#select_id [value='3']").remove();
- jQuery("#select_id").empty();