怎么把下面f()里面的num传给①？

Question

<s:hidden name="sc" value="①"/>
javaScript
function f(){
num=2;

}

Answer 1

<s />添加id<s :hidden name="sc" value="1" id="a"/>然后在f（）里加上var temp=document.getElementById('a');temp.value=num;就ok了 so easy

Answer 2

function f(){num=2;document.getElementByName('sc').value=num;}