JavaScript 设置和获得Radio的选中值

设置单选框默认值:

function setCheckedValue(radioName, newValue) {  

    if(!radioName) return;  

     var radios = document.getElementsByName(radioName);     

     for(var i=0; i<radios.length; i++) {  

          radios.checked = false;  

          if(radios.value == newValue.toString()) {  

                radios.checked = true;  

           }  

     }  



获得单选框选中值:

01.function getRadioValue(radioName){//得到radio的值     
02.        var obj=document.getElementsByName(radioName);     
03.        for(var i=0;i<obj.length;i++){     
04.        if(obj.checked){     
01.            alert(obj.value);  
01.            return obj.value;     
01.            }     
02.        }     
03.    } 

你可能感兴趣的:(function,checked,var,radios,radioname)