http://www.atool.org/hexconvert.php
ss = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ_@";function v10toX(n, m) { m = String(m).replace(/ /gi, ""); if (m == "") { return "" } var a = ss.substr(0, 10); var b = a + "."; if (eval("m.replace(/[" + b + "]/gi,'')") != "") { M("请输入有效的进制数！"); return "" } m = m.split("."); if (m.length > 2) { M("请输入有效的进制数！"); return "" } var a = ss.substr(0, n); if (m.length == 1) { m = m[0]; var t = ""; while (m != 0) { var b = m % n; t = a.charAt(b) + t; m = (m - b) / n } return t } else { var m0 = m[0]; var t = ""; while (m0 != 0) { var b = m0 % n; t = a.charAt(b) + t; m0 = (m0 - b) / n } var cnt = 18; var m1 = m[1]; m1 = parseFloat("0." + m1); var d = "", b = 0; while (m1 != 0 && cnt > 0) { m1 = m1 * n; b = parseInt(m1); d = d + a.charAt(b); m1 = m1 - b; cnt-- } return t + "." + d }}function vXto10(n, m) { m = String(m).replace(/ /gi, ""); if (m == "") { return "" } var a = ss.substr(0, n); var b = a + "."; if (eval("m.replace(/[" + b + "]/gi,'')") != "") { M("请输入有效的" + n + "进制数！"); return "" } m = m.split("."); if (m.length > 2) { M("请输入有效的" + n + "进制数！"); return "" } if (m.length == 1) { m = m[0]; var t = 0, c = 1; for (var x = m.length - 1; x > -1; x--) { t += c * (a.indexOf(m.charAt(x))); c *= n } return t } else { var m0 = m[0]; var t = 0, c = 1; for (var x = m0.length - 1; x > -1; x--) { t += c * (a.indexOf(m0.charAt(x))); c *= n } var m1 = m[1]; var d = 0, c = 1 / n; for (var x = 0; x < m1.length; x++) { d += c * (a.indexOf(m1.charAt(x))); c /= n } return t + d }}function vXtoY(d, b, c) { a = vXto10(d * 1, b); if (a == "") { return "" } a = v10toX(c, a); return a}function M(b) { alert(b)}function convert(g, h, i, f) { var e = document.getElementById(h).value; var d = document.getElementById(f); var b = document.getElementById(g).value; var c = document.getElementById(i).value; d.value = vXtoY(b, e, c)}function convert_c(g, e, f, d) { var c = document.getElementById(e).value; var b = document.getElementById(d); b.value = vXtoY(g, c, f)};
二 进 制：十 进 制：十 进 制：二 进 制：十 进 制：十六进制 ：十六进制 ：十 进 制：十 进 制：六十四进制：六十四进制：十 进 制：