<!DOCTYPE html>
<h1>PROSTE DZIAŁANIA
</h1>
<form name="form" id="form">
<input type="text" name="x1">
<input type="text" name="x2">
<button type="button" onclick="compute('+', form.x1.value, form.x2.value);">Dodawanie
</button>
<button type="button" onclick="compute('-', form.x1.value, form.x2.value);">Odejmowanie
</button>
<button type="button" onclick="compute('*', form.x1.value, form.x2.value);">Mnożenie
</button>
<button type="button" onclick="compute('/', form.x1.value, form.x2.value);">Dzielenie
</button>
var form = document.getElementById('form');
var result = document.getElementById('result');
function compute(sign, x1, x2) {
if (x1 === '' || x2 === '') {
result.innerHTML = 'Proszę uzupełnić obie liczby.';
} else if (sign === '/' && x2 == 0) {
result.innerHTML = 'Nie wolno dzielić przez zero.';
} else {
result.innerHTML = 'Wynik działania wynosi ' + eval(x1 + '' + sign + '' + x2);
}
}
{"html5":"htmlmixed","css":"css","javascript":"javascript","php":"php","python":"python","ruby":"ruby","lua":"text\/x-lua","bash":"text\/x-sh","go":"go","c":"text\/x-csrc","cpp":"text\/x-c++src","diff":"diff","latex":"stex","sql":"sql","xml":"xml","apl":"apl","asterisk":"asterisk","c_loadrunner":"text\/x-csrc","c_mac":"text\/x-csrc","coffeescript":"text\/x-coffeescript","csharp":"text\/x-csharp","d":"d","ecmascript":"javascript","erlang":"erlang","groovy":"text\/x-groovy","haskell":"text\/x-haskell","haxe":"text\/x-haxe","html4strict":"htmlmixed","java":"text\/x-java","java5":"text\/x-java","jquery":"javascript","mirc":"mirc","mysql":"sql","ocaml":"text\/x-ocaml","pascal":"text\/x-pascal","perl":"perl","perl6":"perl","plsql":"sql","properties":"text\/x-properties","q":"text\/x-q","scala":"scala","scheme":"text\/x-scheme","tcl":"text\/x-tcl","vb":"text\/x-vb","verilog":"text\/x-verilog","yaml":"text\/x-yaml","z80":"text\/x-z80"}