select标签使用

tip:选择策略数据，是否存在安全性问题，如果不安全 恢复之前的select - option

1.

//策略选择判断开始
var policyIndex=0; 
function clickPolicy(){
    var obj2 = document.getElementById("policy");
    policyIndex = obj2.selectedIndex;
}
function changePolicy(){
     var num = policyIndex;
     // var selectVal = $("#policy").val(); //获取选中记录的value值 
     //var selectText = $("#policy option:selected").text();//获取选中记录的text值
     //ajax请求数据
     //alert(selectVal+":"+selectText);
     var para = ""
     vwf.ajax({
            url : namespace + "/getPolicyById.action",
            data : para,
            success : function(msg) {
                    if(msg.securityScan=='1'){//非安全
                        jConfirm('存在危险性漏洞,确认要添加吗?', '确认框', function(r) {
                             if(r){
                                 
                             }else{
                                 var obj = document.getElementById("policy");
                                 obj.options[num].selected = true;
                             }
                          });
                    }
            },
            waitMsg:"验证漏洞安全性，请稍候..."
        });
     
}
//策略选择判断结束

2.

//策略选择判断开始
var policyIndex=0; 
function clickPolicy(){
    var obj2 = document.getElementById("policy");
    policyIndex = obj2.selectedIndex;
}
function changePolicy(){
     var num = policyIndex;
     // var selectVal = $("#policy").val(); //获取选中记录的value值 
     //var selectText = $("#policy option:selected").text();//获取选中记录的text值
     //ajax请求数据
     //alert(selectVal+":"+selectText);
     var para = ""
     vwf.ajax({
            url : namespace + "/getPolicyById.action",
            data : para,
            success : function(msg) {
                    if(msg.securityScan=='1'){//非安全
                        jConfirm('存在危险性漏洞,确认要添加吗?', '确认框', function(r) {
                             if(r){
                                 
                             }else{
                                 var obj = document.getElementById("policy");
                                 obj.options[num].selected = true;
                             }
                          });
                    }
            },
            waitMsg:"验证漏洞安全性，请稍候..."
        });
     
}
//策略选择判断结束

var num = policyIndex;这行代码写不写效果不一样