Javascript获取select的选中值和选中文本

<pre class="javascript" name="code">jquery  

var t1 = $("#selMain").find("option:selected").text();
            var t2 = $("#selChild").find("option:selected").text();

var obj = document.getElementById(”select_id”); //selectidvar index = obj.selectedIndex; // 选中索引var text = obj.options[index].text; // 选中文本var value = obj.options[index].value; // 选中值