真是方便呀~
var val = parseInt("11111111", 2); //將 "11111111" 以2為基數剖析 , val = 255
var.toString(16); //將 val 換成16進位表示的字串
有了這兩個方法就可以簡單的完成二進位轉十六進位的程式囉
以下是我試寫的程式碼範例
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>二進位轉十六進位</title>
<script>
function convert(){
var source = document.getElementById("source");
var target = document.getElementById("target");
var arr = source.value.split("\n");
target.value = "";
for (var i in arr )
{
var binval = parseInt(arr[i], 2);
if(!isNaN(binval))
target.value += "0x" + binval.toString(16).toUpperCase() + "\n";
else
target.value += "\n";
}
}
document.onkeyup = convert;
</script>
</head>
<body >
<h2>二進位轉十六進位</h2>
<div style="width:50%; float:left;">
<span style="font-size: 20px;">二進位</span>
<textarea id="source" style="width:100%; height:400px;"></textarea>
</div>
<div style="width:50%; float:left;">
<span style="font-size: 20px;">十六進位</span>
<textarea id="target" style="width:100%; height:400px;"></textarea>
</div>
<div style="text-align:center;">
<button onclick="convert()" >轉換</button>
</div>
</body>
