//**1、设置选中值:(根据索引确定选中值)**//var osel=document.getElementById("selID"); //得到select的IDvar opts=osel.getElementsByTagName("option");//得到数组optionvar obt=document.getElementById("bt");obt.onclick=function(){opts[3].selected=true;//设置option第4个元素,即value="3"为默认选中 }//**2、通过原生JS来实现设置选中值,(根据value值确定选中值)**///** * 设置select控件选中 * @param selectId select的id值 * @param checkValue 选中option的值 //实际情况中可能不是options,而是context,具体自定*/ function set_select_checked(selID, checkValue){ var select = document.getElementById(selID); for (var i = 0; i < select.options.length; i++){ if (select.options[i].value == checkValue){ select.options[i].selected = true; break; } } }//**3、设置禁止选择:**//$("#selectId").attr("disabled", "disabled");$("#selectId").attr("style", "background-color: #EEEEEE;");//设为灰色,看起来更像不能操作的按钮//**4、按钮禁止点击**//$('#buttonId').attr("disabled", true);$("#buttonId").attr("style", "background-color: #EEEEEE;");//设为灰色,看起来更像不能操作的按钮
实例:
<!---省略部分代码---><tbody><tr class="firstRow"><td valign="top" style="word-break: break-all; width: 20%;" rowspan="1" colspan="1"><select id="mekeupType" onchange="MekeupTypeChange();"><option value="moneyWay">货币补偿</option><option value="houseWay">房屋补偿</option></select> </td><td valign="top" style="word-break: break-all; width: 50%;" rowspan="1" colspan="1"><input type="button" value="计算" id="buttonCount" onclick="buttonCountClick();" style="background-color: #339999; color: white;border-color: #339999"" /> <input type="button" value="协议打印" id="buttonPoint" onclick="Painting()" style="background-color: #339999; color: white;border-color: #339999""/> <input type="button" value="签约确认" id="buttonSign" onclick="Sign()" style="background-color: #339999; color: white;border-color: #339999"/>@*<input type="button" value="返回列表" id="buttonBack" onclick="GoBackList();"/>*@</td><td width="189" valign="top"></td><td width="189" valign="top"></td><td width="189" valign="top"></td><td width="189" valign="top"></td></tr></tbody></table><!---省略部分代码---><script> $(document).ready(function () {//*****省略部分代码*****//var mekeupel = document.getElementById("mekeupType"); //得到select的IDvar opts = mekeupel.getElementsByTagName("option");//得到数组optionif (compensationMethod.toLowerCase() == "null") {//null//null }else if (compensationMethod.toLowerCase() == "33c3e03a-3bb6-4147-87bd-4c77b84d615b".toLowerCase()) //货币 {opts[0].selected = true;//设置option第1个元素 }else if (compensationMethod.toLowerCase() == "c80ea27b-2d11-4e7d-8d6e-65d2b5210d8a".toLowerCase()) //产权置换 {opts[1].selected = true;//设置option第1个元素 }IsSign = parseInt(data[0]["issign"]);if (1 == IsSign) {//设置安置补偿方式禁止选择//disabled="disabled"//background-color: #EEEEEE; $("#mekeupType").attr("disabled", "disabled");$("#mekeupType").attr("style", "background-color: #EEEEEE;");//设置计算按钮、签约确认按钮 禁止click $('#buttonCount').attr("disabled", true);$("#buttonCount").attr("style", "background-color: #EEEEEE;");$('#buttonSign').attr("disabled", true);$("#buttonSign").attr("style", "background-color: #EEEEEE;");} else {}//*****省略部分代码*****//});</script>
获取select选中值
var select = document.getElementById("HouseType");var index = select.selectedIndex; // 选中索引var text = select.options[index].text; // 选中文本var value = select.options[index].value;//选中值//document.getElementById("ZSGYTD_HouseInfo.HouseType").value = value;
select用法拓展阅读:select用法大全