js小校验

//预防脚本请入的js校验
function chkScript(element,msg) {
var reg = /.*\<script.*\>.*\<\/script\>.*/i;
var reg2 = /.*\<iframe.*\>.*\<\/iframe\>.*/i;
if (reg.test(element.value) || reg2.test(element.value))
{
    alert(msg);
    element.focus();
    element.style.background = "#D0D0D0";
    return false;
}

element.style.background = "#FFFFFF";
return true;
}

function queryFeedback(){
   //校验：防脚本注入
var contractNo = document.checkerForm.contractNo; if(!chkScript(contractNo,"合同号不合法！"))
{
   return false;
}
document.checkerForm.actionFlag.value = "getCheckerConfig";
document.checkerForm.submit();

    }