select框对div的一些应用

    function a(){
      var a="${cusingInfo.rgree}";
if(a=="70C级钢帘线用料情况"){
document.getElementById("di1").style.display="block";
document.getElementById("di2").style.display="none";
}
if(a=="80C级钢帘线用料情况"){
document.getElementById("di2").style.display="block";
document.getElementById("di1").style.display="none";
}

        }

<script>var select = document.getElementById("select1"); select.onchange = function(){var options = select.getElementsByTagName("option");for(var i = 0; i < options.length; i++){if(options[i].selected){var divid = options[i].id.replace("option","div");var divs = document.getElementsByTagName("div");for(var j = 0; j < divs.length; j++){if(divid == divs[j].id){divs[j].style.display = "block";}else{divs[j].style.display = "none";}}} } }</script>