when I start to write in the htPrice field, Nan appears in the ttcPrice field, how can i fix this?
calculatTTC() {
const htPrice = parseFloat(this.htpriceTargets[0].value);
const tvaPercent = parseFloat(this.tvaTargets[0].value);
const ttcPrice= parseFloat(preTaxPrice + vatPercent);
if (isNaN(htPrice) && isNaN(tvaPercent)) {
this.ttcPriceTargets[0].value = 'the value is not correct';
} else {
this.ttcPriceTargets[0].value = ttcPrice;
}
}
You should check that htPrice OR tvaPercent is NaN. And only if both are not - calculate TTC.
calculatTTC() {
const htPrice = parseFloat(this.htpriceTargets[0].value);
const tvaPercent = parseFloat(this.tvaTargets[0].value);
if (isNaN(htPrice) || isNaN(tvaPercent)) {
this.ttcPriceTargets[0].value = 'the value is not correct';
} else {
const ttcPrice= parseFloat(preTaxPrice + vatPercent);
this.ttcPriceTargets[0].value = ttcPrice;
}
}