I want to generate random equations in JavaScriptp and then output them into an HTML tag. This is the code:
<!DOCTYPE html>
<body>
<p>Click the button below to generate a random equation.</p>
<button onclick="change();">Generate</button>
<p id="generate"></p>
<script>
function getRandomizer(bottom, top) {
return function() {
return Math.floor( Math.random() * ( 1 + top - bottom ) ) + bottom;
}
}
function getRandomNumber(results) {
var rollDie = getRandomizer( 1, 10 );
for ( var i = 0; i < 3; i++ ) {
results += rollDie() + "";
}
getRandomNumber.result = results;
}
function getRandomEquation(num1, num2, num3, num4, num5, num6, num7, output) {
var num_7,
num_6,
num_5,
num_4,
num_3,
num_2,
num_1
getRandomNumber(num1).result = num_7;
getRandomNumber(num2).result = num_6;
getRandomNumber(num3).result = num_5;
getRandomNumber(num4).result = num_4;
getRandomNumber(num5).result = num_3;
getRandomNumber(num6).result = num_2;
getRandomNumber(num7).result = num_1;
var equation1 = "" + num_1 + " x " + num_2 + " + {" + num_3 + " x [(" + num_4 + " x " + num_5 + ") - " + num_6 + "] + " + num_7 + "} = x",
equation2 = "" + num_1 + " x " + num_2 + " = y",
equation3 = "" + num_1 + "s x " + num_2 + " = z, s = " + num_3,
equation4 = "" + num_1 + " + {" + num_2 + " x [" + num_3 + " + (" + num_4 + " x " + num_5 + ") + " + num_6 + "] + " + num_7 + "} = x",
equation5 = "" + num_1 + "e + " + num_2 + "l x " + num_3 + " + " + num_4 + "a, e = " + num_5 + ", l = " + num_6 + ", a = " + num_7,
equation6 = "[" + num_1 + " x " + num_2 + "z] + {" + num_3 + " - " + num_4 + "} + (" + num_5 + " + " + num_6 + ") = e, z = " + num_7,
equation7 = "p" + " x " + num_1 + " / " + num_2 + " - " + num_3 + " + " + num_4 + " = e, p = " + num_5
var values = [
// there is an easier way to do this, too lazy
"" + equation1,
"" + equation2,
"" + equation3,
"" + equation4,
"" + equation5,
"" + equation6,
"" + equation7
]
var i = 0;
var e;
if (i > values.length) {
i = 0;
}
var randomEquation = values[i];
i++;
e = values[i];
this.output = randomEquation;
this.e = e;
}
function getEquation() {
var bl1,
bl2,
bl3,
bl4,
bl5,
bl6,
bl7,
equationOutput;
var eq = getRandomEquation(bl1, bl2, bl3, bl4, bl5, bl6, bl7, equationOutput).e;
getEquation.equation = eq;
}
function change() {
var final = getEquation().equation;
document.getElementById("generate").innerHTML = final;
}
</script>
</body>
</html>
But it dosen't work. Any help?
P.S. My teacher assigned this to me. Please respond as soon as possible. Thanks.
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