Why doesn't this simple JavaScript work in FireFox or Chrome?

Question

Why does this simple code not work in Firefox and Chrome but it works on IE? What's wrong with this script? I just want to find a way too get selected checkbox text (or label) and use it a $_post on another page.

<meta content="text/html; charset=utf-8" http-equiv="Content-Type" />
<script type="text/javascript" language="javascript">

function ReadCheckbox()
{
    var temp = '';
    var radio;
    var popupTag ;

    for (var i=1 ; i<5 ; i++) {
        radio = document.getElementById('chk'+i);

        if(radio.checked == true){temp += radio.value}
    }

      document.getElementById('aaaa').value = temp;

}

</script>
</head>
<body>

<label>What is your Site Address ?</label><br/>
<label>NetNic.ir</label><input id="chk1" type="checkbox" value="NetNic.ir" />
<label>SarirWeb.Com</label><input id="chk2" type="checkbox" value="SarirWeb.Com"/>
<label>LearnCD.ir</label><input id="chk3" type="checkbox" value="LearnCD.ir"/> 
<label>AnimLand.ir</label><input id="chk4" type="checkbox" value="AnimLand.ir"/> 
<br />
<br/>
<textarea rows="2" name="aaaa" cols="20"></textarea>
<input type="button" onclick="ReadCheckbox()" value="ثبت" style="height:32px; width:83px;"/>

Answer 1

name="aaaa" is not an id. So getElementById('aaaa') will not find it.

Answer 2

尝试：

<textarea rows="2" name="aaaa" id="aaaa" cols="20"></textarea>

Why doesn't this simple JavaScript work in FireFox or Chrome?

Question

2 answers

solution1
0 2012-09-04 21:35:55

solution2
0 2012-09-04 21:37:48

Why doesn't this simple JavaScript work in FireFox or Chrome?

Question

2 answers

solution1 0 2012-09-04 21:35:55

solution2 0 2012-09-04 21:37:48

solution1
0 2012-09-04 21:35:55

solution2
0 2012-09-04 21:37:48