Jcblmaster: Created page with "addOnloadHook(calculateMassInit); var EXT_MASS = { "C": 12.0, "H": 1.007825035, "O": 15.99491463, "N": 14.003074002, "S": 31.97207070, "P": 30.9737620, "Na": 2..."

2017-03-27T00:55:52Z

Created page with "addOnloadHook(calculateMassInit); var EXT_MASS = { "C": 12.0, "H": 1.007825035, "O": 15.99491463, "N": 14.003074002, "S": 31.97207070, "P": 30.9737620, "Na": 2..."

New page

addOnloadHook(calculateMassInit);

var EXT_MASS = {
"C": 12.0,
"H": 1.007825035,
"O": 15.99491463,
"N": 14.003074002,
"S": 31.97207070,
"P": 30.9737620,
"Na": 22.9897677,
"K": 38.9637074,
"Ca": 39.9625906
}

var AVE_MASS = {
"C": 12.0107,
"H": 1.00794,
"O": 15.9994,
"N": 14.00674,
"S": 32.066,
"P": 30.973761,
"Na": 22.98977,
"K": 39.0983,
"Ca": 40.078,
}

function calculateMassInit()
{
document.getElementById("{{{1}}}").onclick = function(){
var mass = calculateMassFromFormula(document.getElementById("{{{2}}}").value, false);
document.getElementById("{{{3}}}").value = mass;
}
}

function calculateMassFromFormula(formula, isAve)
{
var items = splitFormula(formula);

var total = 0;
var masses;
if(isAve)
masses = AVE_MASS;
else
masses = EXT_MASS;
for(var i = 0; i < items.length; i += 2){
if(isFinite(masses[items[i]]))
total += masses[items[i]] * items[i+1];
//console.log(masses[items[i]], items[i+1]);
}
//console.log(items)
//console.log(total)
return total;
}

function splitFormula(formula)
{
if(formula.length == 0) // 組成式が無い
return [];

var items = [];
formula += "$"; // 番兵
var ch = formula.substr(0, 1);
if(ch.match(/^[^A-Z]$/)) // フォーマットがおかしい
return [];

var num = 1;
for(var i = 1; i < formula.length; i ++){
var next = formula.substr(i, 1);
if(next.match(/^[0-9]$/)){
// 数字が終わるまでを検索する
for(var j = i+1; j < formula.length; j ++){
if(formula.substr(j,1).match(/^[^0-9]$/)){
// 終了
num = parseInt(formula.substr(i,j-i), 10);
i = j-1;
break;
}
}

} else if(next.match(/^[a-z]$/)){
ch += next;

} else if(next.match(/^[A-Z]$/)){
items.push(ch);
items.push(num);
ch = next;
num = 1;

} else if(next == "$"){
items.push(ch);
items.push(num);
break;

} else { // unknown
return [];
}
}

return items;
}

MediaWiki:CalculateMass.js - Revision history

Jcblmaster: Created page with "addOnloadHook(calculateMassInit); var EXT_MASS = { "C": 12.0, "H": 1.007825035, "O": 15.99491463, "N": 14.003074002, "S": 31.97207070, "P": 30.9737620, "Na": 2..."