Javascript字节转KB MB GB TB

字节数字转换为KB、MB、GB、TB

<input type="number" id="byte" value="1024">
<button id="convert-byte">Convert</button>
<div id="preview-size"></div>

<script>
function byte_format(bytes) {
    bytes = bytes.toString().replace(/[^0-9.]/g, '');
    var sizes = ["B", "KB", "MB", "GB", "TB"];
    bytes = parseInt(bytes);
    if (bytes <= 0 || isNaN(bytes)) return "0 B";
    var i = Math.floor(Math.log(bytes) / Math.log(1024));
    return Math.round(bytes / Math.pow(1024, i), 2) + ' ' + sizes[i];
}
document.getElementById("convert-byte").onclick = function(){
  let byte = document.getElementById("byte").value;
  let result = byte_format(byte);
  document.getElementById("preview-size").innerHTML= result
}
</script>

文本内容字节转换

<textarea id="text-val">Lorem ipsum dolor sit amet,....</textarea>
<button id="convert">Convert</button>
<div id="preview-size"></div>

<script>
function byte_format(bytes) {
    bytes = bytes.toString().replace(/[^0-9.]/g, '');
    var sizes = ["B", "KB", "MB", "GB", "TB"];
    bytes = parseInt(bytes);
    if (bytes <= 0 || isNaN(bytes)) return "0 B";
    var i = Math.floor(Math.log(bytes) / Math.log(1024));
    return Math.round(bytes / Math.pow(1024, i), 2) + ' ' + sizes[i];
}

document.getElementById("convert").onclick = function(){
  let text = document.getElementById("text-val").value;
  var size = new Blob([text]).size;
  let result = byte_format(size);
  document.getElementById("preview-size").innerHTML= result
}
</script>

版权声明：本文为原创文章，版权归 全栈开发技术博客 所有。

本文链接：https://www.lvtao.net/dev/javascript-byte-size.html

转载时须注明出处及本声明