是不是HTML代码的问题,以下代码执行没错
<input type="checkbox" checked name="answer" value= "1">
<input type="checkbox" checked name="answer" value= "2">
<input type="checkbox" checked name="answer" value= "3">
<input type="checkbox" checked name="answer" value= "4">
<script>
var temp=document.getElementsByName("answer");
var answer = "";
for (i=0;i<temp.length;i++){
if(temp[i].checked) answer += temp[i].value;
}
alert(answer);</script>
<input type="checkbox" checked name="answer" value= "1">
<input type="checkbox" checked name="answer" value= "2">
<input type="checkbox" checked name="answer" value= "3">
<input type="checkbox" checked name="answer" value= "4">
<script>
var temp=document.getElementsByName("answer");
var answer = "";
for (i=0;i<temp.length;i++){
if(temp[i].checked) answer += temp[i].value;
}
alert(answer);</script>
<input type="radio" name="SAnswer1" value="A">A
<input type="radio" name="SAnswer1" value="B">Bjs:
var n=1;
var answer="";
var temp;
while(temp=document.getElementsByName("SAnswer"+n)!=null){
for (i=0;i<temp.length;i++){
if(temp[i].checked) answer += temp[i].value;
}
n=Number(n)+1;
}
单个的是可以,但加上while语句就不行了,会死循环(
把i<temp.length改为 i<5 提示checked为空或不是对象百思不得其解啊
var answer="";
var temp;
while(document.getElementsByName("SAnswer"+n).length>0){
temp=document.getElementsByName("SAnswer"+n);
for (i=0;i<temp.length;i++){
if(temp[i].checked) answer += temp[i].value;
}
n=Number(n)+1;
}