文件大小的详细计算-WEBASP.NET

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文件大小的详细计算

日期：2005-06-29 人气：【字体：大中小】【收藏此文】

<HTML>
<HEAD>
<META http-equiv='Content-Type' content='text/html; charset=gb2312'>
<TITLE>文件大小的详细计算</TITLE>
</HEAD>
<BODY >

<form name="bandwidth">
  <p><input type="text" name="original" size="20" value=1024> <select size="1" name="units">
    <option value="Bytes">Bytes</option>
    <option value="Kb">Kb</option>
    <option value="Mb">Mb</option>
    <option value="Gb">Gb</option>
  </select> <input type="button" value="详细计算" name="B1" onClick="calculate()"></p>
</form>

alert (invalue+" "+selectunit+" 等于:\n\n- "+bytevalue+" Bytes\n- "+Math.round(bytevalue/1024)+" Kb\n- "+Math.round(bytevalue/1024/1024)+" Mb\n- "+Math.round(bytevalue/1024/1024/1024)+" Gb\n")
}

</script>

</BODY></HTML>

<form name="bandwidth">
<p><input type="text" name="original" size="20" value=1024> <select size="1" name="units">
<option value="Bytes">Bytes</option>
<option value="Kb">Kb</option>
<option value="Mb">Mb</option>
<option value="Gb">Gb</option>
</select> <input type="button" value="详细计算" name="B1" onClick="calculate()"></p>
</form>

<script>
var bytevalue=0
function calculate(){
var invalue=document.bandwidth.original.value
var selectunit=document.bandwidth.units.options[document.bandwidth.units.selectedIndex].value
if (selectunit=="Bytes")
bytevalue=invalue
else if (selectunit=="Kb")
bytevalue=invalue*1024
else if (selectunit=="Mb")
bytevalue=invalue*1024*1024
else if (selectunit=="Gb")
bytevalue=invalue*1024*1024*1024

alert (invalue+" "+selectunit+" 等于:\n\n- "+bytevalue+" Bytes\n- "+Math.round(bytevalue/1024)+" Kb\n- "+Math.round(bytevalue/1024/1024)+" Mb\n- "+Math.round(bytevalue/1024/1024/1024)+" Gb\n")
}

</script>