Hallo,
ich versuche gerade 'var waeh' in ein Object-literal umzuformen und das
'fetch' so zu formulieren das es dies aufnimmt. Leider funktioniert es aber
nicht und ich weiss nicht was ich tun kann.
Code
- var waeh = {
- 'CHF': 1.34,
- 'USD': 1.23,
- 'EUR': 1.45
- };
- const from_currencyEl=document.getElementById('from_currency');
- const to_currencyEl=document.getElementById('to_currency');
- const from_ammountEl = document.getElementById('from_ammount');
- const to_ammountEl = document.getElementById('to_ammount');
- const rateEl = document.getElementById('rate');
- const exchange = document.getElementById('exchange');
- for(x=0;x<waeh.length;x++){
- op=document.createElement('option');
- op.value=waeh[x];
- op.innerHTML=waeh[x];
- from_currencyEl.append(op)
- }
- to_currencyEl.innerHTML=from_currencyEl.innerHTML;
- from_currencyEl.addEventListener('change', calculate);
- from_ammountEl.addEventListener('input', calculate);
- to_currencyEl.addEventListener('change', calculate);
- to_ammountEl.addEventListener('input', calculate);
- exchange.addEventListener('click', () => {
- const temp = from_currencyEl.value;
- from_currencyEl.value = to_currencyEl.value;
- to_currencyEl.value = temp;
- calculate();
- });
- function calculate() {
- const from_currency = from_currencyEl.value;
- const to_currency = to_currencyEl.value;
- fetch(`waeh${from_currency}`)
- .then(res => res.json())
- .then(res => {
- const rate = res.rates[to_currency];
- rateEl.innerText = `1 ${from_currency} = ${rate} ${to_currency}`
- to_ammountEl.value = (from_ammountEl.value * rate).toFixed(2);
- })
- }
- calculate();
