function schage() {
var obj = document.getElementById("type");
var 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
if (value=='1BM'){
setDisplay("BM1,BM2", "block");
setDisplay("R1,R2", "none");
} else if (value=='2Z'||value=='3R'){
setDisplay("BM1,BM2", "none");
setDisplay("R1,R2", "block");
}
}
转载于:https://my.oschina.net/u/230843/blog/340976