<script type="text/javascript"> function Main() { ReadElements(); FilterFormula(); ReadFormula(); Output(); } function ReadElements() { H = 1.00794; D = 2.01408; T = 3.01686; He = 4.002602; Li = 6.941; Be = 9.012182; B = 10.811; C = 12.011; N = 14.00674; O = 15.9994; F = 18.9984032; Ne = 20.1797; Na = 22.989768; Mg = 24.3050; Al = 26.981539; Si = 28.0855; P = 30.973762; S = 32.066; Cl = 35.4527; Ar = 39.948; K = 39.0983; Ca = 40.078; Sc = 44.95591; Ti = 47.867; V = 50.9415; Cr = 51.9961; Mn = 54.93805; Fe = 55.845; Co = 58.9332; Ni = 58.6934; Cu = 63.546; Zn = 65.39; Ga = 69.723; Ge = 72.61; As = 74.92159; Se = 78.96; Br = 79.904; Kr = 83.8; Rb = 85.4678; Sr = 87.62; Y = 88.90585; Zr = 91.224; Nb = 92.90638; Mo = 95.94; Tc = 98.9063; Ru = 101.07; Rh = 102.9055; Pd = 106.42; Ag = 107.8682; Cd = 112.411; In = 114.818; Sn = 118.71; Sb = 121.76; Te = 127.6; I = 126.90447; J = 126.90447; Xe = 131.29; Cs = 132.90543; Ba = 137.327; Hf = 178.49; Ta = 180.9479; W = 183.84; Re = 186.207; Os = 190.23; Ir = 192.217; Pt = 195.08; Au = 196.96654; Hg = 200.59; Tl = 204.3833; Pb = 207.2; Bi = 208.98037; Po = 208.9824; At = 209.9871; Rn = 222.0176; Fr = 223.0197; Ra = 226.0254; La = 138.9055; Ce = 140.115; Pr = 140.90765; Nd = 144.24; Pm = 146.9151; Sm = 150.36; Eu = 151.965; Gd = 157.25; Tb = 158.92534; Dy = 162.5; Ho = 164.93032; Er = 167.26; Tm = 168.93421; Yb = 173.04; Lu = 174.967; Ac = 227.0278; Th = 232.0381; Pa = 231.03588; U = 238.0289; Np = 237.0482; Pu = 244.0642; Am = 243.0614; Cm = 247.0703; Bk = 247.0703; Cf = 251.0796; Es = 252.0829; Fm = 257.0951; Md = 258.0986; No = 259.1009; Lr = 260.1053; } function FilterFormula() { var input = document.Chem.Formula.value; var len = input.length; filtered_formula = ""; for (x=0; x<len; x++) { var ccode = input.charCodeAt(x); if (ccode >= 65 && ccode <= 90 || ccode >= 97 && ccode <= 122 || ccode >= 46 && ccode <= 57) filtered_formula += input.charAt(x); if (ccode == 44) filtered_formula += "."; if (ccode == 40 || ccode == 91 || ccode == 123) filtered_formula += "("; if (ccode == 41 || ccode == 93 || ccode == 125) filtered_formula += ")"; } } function ReadFormula() { var input = filtered_formula; var len = input.length; translated_formula = input.charAt(0); for (x=1; x<len; x++) { var ccode = input.charCodeAt(x); var ccodebef = input.charCodeAt(x-1); if (ccode >= 46 && ccode <= 57) {if (ccodebef < 46 || ccodebef > 57) translated_formula += "*";} if (ccode >= 65 && ccode <= 90 && ccodebef != 40) translated_formula += "+"; if (ccode == 40 && ccodebef != 40) translated_formula += "+"; translated_formula += input.charAt(x); } } function Output() { var mm = eval(translated_formula); var rec_mm = 1/mm; with(document) { with(Math) { if (mm > 1000) Chem.Weight.value = round(100*mm)/100 + " g/mol"; if (mm <= 1000) Chem.Weight.value = round(1000*mm)/1000 + " g/mol"; if (rec_mm <= 1 && rec_mm > 0.1) Chem.Reciproc.value = round(10000*rec_mm)/10 + " mmol/g"; if (rec_mm <= 0.1 && rec_mm > 0.01) Chem.Reciproc.value = round(100000*rec_mm)/100 + " mmol/g"; if (rec_mm <= 0.01 && rec_mm > 0.001) Chem.Reciproc.value = round(1000000*rec_mm)/1000 + " mmol/g"; if (rec_mm <= 0.001) Chem.Reciproc.value = round(10000000*rec_mm)/10000 + " mmol/g"; } } } </SCRIPT> </FONT><B><FONT color=#ff0000 size=6>分子量在线计算器</FONT><FONT size=5> </FONT></B> <FORM name=Chem> <TABLE border=0 width=521 height=180> <TBODY> <TR> <TD height=44 width=114><FONT color=#0000ff size=4><FONT face=宋体><FONT size=5>化学式</FONT><B>：</B></FONT></FONT></TD> <TD style="FONT-FAMILY: Times New Roman; FONT-SIZE: 30pt" height=44 colSpan=2><FONT size=5><INPUT style="WIDTH: 257px; HEIGHT: 38px" size=38 name=Formula><FONT face=宋体></FONT></FONT></TD></TR> <TR> <TD height=44 width=114><FONT size=4><FONT face=宋体><FONT color=#ff0000 size=5>分子量</FONT><B>: </B></FONT></FONT></TD> <TD height=44 width=400 colSpan=2><FONT size=5><INPUT style="HEIGHT: 32px" size=15 name=Weight><FONT face=宋体> </FONT></FONT><FONT color=#0000ff size=4 face=宋体><SPAN style="BACKGROUND-COLOR: #ffff00">化学式要区分大小写!</SPAN></FONT></TD></TR> <TR> <TD width=114><FONT size=4><FONT size=5 face=宋体>倒数</FONT><B><FONT face=宋体>:</FONT> </B></FONT></TD> <TD height=44 width=400 colSpan=2><FONT size=5><INPUT style="HEIGHT: 32px" size=15 name=Reciproc></FONT></TD></TR> <TR> <TD width=114> </TD> <TD width=75><FONT color=#ff0000 size=4><INPUT onclick=Main() value=计算 type=button></FONT></TD> <TD width=321><FONT color=#0000ff size=4><INPUT value="清除! 重算" type=reset></FONT></TD></TR></TBODY></TABLE></FORM>