This JS program should return function ggt(x,z). I tried to implement it this way, everything is ok except this part I believe:
document.getElementById("demo").innerHTML=ggt(x,z);
What should be added to make this function work properly?
<!DOCTYPE html>
<html>
<body>
<script type="text/javascript">
function calculate(){
var a=document.getElementById("in1").value;
var b=document.getElementById("in2").value;
if(isNaN(a) || isNaN(b)){
alert("Not a number");
}else{
ggt(a,b);
}
}
function ggt(x,y){
if (y==0){
return x;
}else{
var z=x%y;
document.getElementById("demo").innerHTML=ggt(x,z);
return ggt(x,z);
}
}
</script>
<div>
<input id="in1" type="text" />
<input id="in2" type="text" />
<input type="button" onclick="calculate()" value="pute" />
<p id="demo"></p>
</div>
</body>
</html>
This JS program should return function ggt(x,z). I tried to implement it this way, everything is ok except this part I believe:
document.getElementById("demo").innerHTML=ggt(x,z);
What should be added to make this function work properly?
<!DOCTYPE html>
<html>
<body>
<script type="text/javascript">
function calculate(){
var a=document.getElementById("in1").value;
var b=document.getElementById("in2").value;
if(isNaN(a) || isNaN(b)){
alert("Not a number");
}else{
ggt(a,b);
}
}
function ggt(x,y){
if (y==0){
return x;
}else{
var z=x%y;
document.getElementById("demo").innerHTML=ggt(x,z);
return ggt(x,z);
}
}
</script>
<div>
<input id="in1" type="text" />
<input id="in2" type="text" />
<input type="button" onclick="calculate()" value="pute" />
<p id="demo"></p>
</div>
</body>
</html>
- 1 What does "work properly" mean? What does it do that you don't expect, or not do that you do expect? – Pointy Commented Apr 15, 2015 at 14:56
- Your current ggt recursion can do 2 things: return x, or not terminate at all. What are you trying to achieve? – doldt Commented Apr 15, 2015 at 15:00
- I always get 0 as result, I am expecting function that includes variable x and modulus of the calculation those 2 numbers from input – Aviator Commented Apr 15, 2015 at 15:00
- This function is calling ggt(x,y) recursively until x%y == 0 and then returns x which makes no sense to me since x is never modified, you could simply return x? – RobertoNovelo Commented Apr 15, 2015 at 15:02
- becouse I need modulus also – Aviator Commented Apr 15, 2015 at 15:04
1 Answer
Reset to default 1
function calculate()
{
var a = document.getElementById("in1").value;
var b = document.getElementById("in2").value;
if (isNaN(a) || isNaN(b)) {
alert("Not a number");
} else {
var values = ggt(a, b);
console.log(values);
if (values.valid) {
document.getElementById("demonumber").innerHTML = values.number;
document.getElementById("demomodulus").innerHTML = values.modulo;
}
}
}
function ggt(x, y) {
var res = {};
if (y == 0) {
res.valid = false;
} else {
res.valid = true;
res.number = x;
res.modulo = x % y;
}
return res
}<div>
<input id="in1" type="text" />
<input id="in2" type="text" />
<input type="button" onclick="calculate()" value="pute" />
<p id="demonumber"></p>
<p id="demomodulus"></p>
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