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请高手看看，哪里错了

时间：2011-11-06

来源：互联网

要点取的checkbox的value值
CSS code


<script>
function checkedall(obj){
var ywly = document.getElementById("ywly"); 
ywly.value = ""; 
var inputs = document.getElementsByTagName("input");
for(var i=0;i<4;i++){
if(inputs[i].type == "checkbox" && inputs[i].checked){
}
}
ywly.value = inputs[i].value + ","                 
}
</script>
<input type=checkbox name="X1" value="111">
<input type=checkbox name="X2" value="222">
<input type=checkbox name="X3" value="333">
<input type=checkbox name="X4" value="444">
<br>
<textarea rows="10" name="ywly" cols="82"></textarea>
<br>
<input type="button" value=" 选 定 " name="B1" onclick="checkedall(this.value)">

作者: yessanya 发布时间: 2011-11-06

HTML code


<script>
function checkedall(obj){
    var ywly = document.getElementById("ywly"); 
    ywly.value = "";
    var s = "";
    var inputs = document.getElementsByTagName("input");
    for(var i=0;i<inputs.length;i++){
        if(inputs[i].type == "checkbox" && inputs[i].checked){
            s += inputs[i].value + ",";
        }
    }
    if(s!="") s = s.substr(0, s.length-1);
    ywly.value = s                
}
</script>
<input type=checkbox name="X1" value="111">
<input type=checkbox name="X2" value="222">
<input type=checkbox name="X3" value="333">
<input type=checkbox name="X4" value="444">
<br>
<textarea rows="10" name="ywly" cols="82"></textarea>
<br>
<input type="button" value=" 选 定 " name="B1" onclick="checkedall(this.value)">

作者: hookee 发布时间: 2011-11-06

JScript code


<script>
function checkedall(obj){
    var ywly = document.getElementById("ywly"); 
    ywly.value = "";
    var inputs = document.getElementsByTagName("input");
    for(var i=0;i<4;i++){
        if(inputs[i].type == "checkbox" && inputs[i].checked){
            ywly.value += inputs[i].value + ","  
        }
    }
               
}
</script>
<input type=checkbox name="X1" value="111">
<input type=checkbox name="X2" value="222">
<input type=checkbox name="X3" value="333">
<input type=checkbox name="X4" value="444">
<br>
<textarea rows="10" name="ywly" cols="82"></textarea>
<br>
<input type="button" value=" 选 定 " name="B1" onclick="checkedall(this.value)">

作者: hanpoyangtitan 发布时间: 2011-11-06

请高手看看，哪里错了

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