1、通过修改select的value值 1 <input type="button" id="btn" value="按钮"/> 2 <select name="select" id="select"> 3 <option value="1">aa</option> 4 <option value="a">bb</option> 5 <option value="c">cc</option> 6 </sel
//方式一:使用select元素的selectedIndex属性,selectedIndex是设置或获取选中选项(<option>)位于 select 对象中的位置 tagSelect.selectedIndex = selectIndex; /*方式二:使用select元素的options集合,options代表select元素中的所有<option>子标记, 如果需要访问options集合中的第二个option时,可以通过options[1]的方式访问;...
<select multiple id="leftSel" onclick="setButton(this)" style="height:200px;width:100px;"> <option value="1">Java</option> <option value="2">JavaScript</option> <option value="3">C++</option> <option value="4">HTML</option> </select> </td> <td> <input type="button" value=...
oSelectMonth.options.length = 0;//清空Select里面的options 三、设置默认选中option varoSelectMonth = document.getElementById("SelectMonth"); //oSelectMonth.selectedIndex = 1;//方法一:默认选中第二项 //setTimeout(function() { oSelectMonth.selectedIndex = 1; }, 0); //用setTimeout延迟是为了防...
// objSelect.add(objOption, objSelect.selectedIndex); } //--> </SCRIPT> </HEAD> <BODY onload="setProvinces()"> <!--Select.selectedIndex (Property) qixy: through experiment: Select.selectedIndex is 0-based.但是第0项是“请选择省份-- ” --> <select name="select" id="province" onchang...
获取HTML网页中option标签元素的值 在进行表单元素的操作时,难免会遇到对option元素的挑选,下面的示例代码能够很好的获取到你option元素选择的值,如果要传递给后端,可通过ajax或者其他方式传递即可。 示例代码 获取option元素 编程语言 select...">JavaScript select> javascript ...
The options.length property specifies the number of elements in the array, as does the select .length property. See the Option object for further details. In JavaScript 1.1, you can modify the options displayed in a Select object in any of the following ways: If you set options.length ...
Example: viewport: '#viewport' or { "selector": "#viewport", "padding": 0 } If a function is given, it is called with the triggering element DOM node as its only argument. The this context is set to the tooltip instance. Data attributes for individual tooltips Options for individual ...
Example: viewport: '#viewport' or { "selector": "#viewport", "padding": 0 } If a function is given, it is called with the triggering element DOM node as its only argument. The this context is set to the popover instance. Data attributes for individual popovers Options for individual ...
最近在跟着老师做一个项目,在项目过程中遇到了动态生成Select的一系列问题,针对解决方案做一个简单的记录。需求描述如下:将后端获取的对象根据varName分类...