only validate if input fields non-empty

index.html

@@ -129,7 +129,7 @@
 <footer class="footer">
     <div class="content has-text-centered">
         <p>
-            <strong>BezahlBrudi v1.0.4</strong> by <a href="https://xengi.de">XenGi</a>.
+            <strong>BezahlBrudi v1.0.5</strong> by <a href="https://xengi.de">XenGi</a>.
             The source code is licensed <a href="https://opensource.org/license/mit">MIT</a>. Find the source code on <a href="https://gitlab.com/xengi/bezahlbrudi/">GitLab</a>.
             <br/>
             This site doesn't store any data outside your browser. This site doesn't provide any financial services. It is a simple QR code generator.

js/index.js

@@ -30,6 +30,7 @@ setCookie = () => {
 // Field data checks
 
 validateName = (target) => {
+  if (target.value.length == 0) return
   if (target.value.length > 0 && target.value.length <= 70) {
     target.classList.remove("is-danger")
     document.querySelector("#name div span").innerHTML = "&#x2705;";
@@ -50,6 +51,7 @@ validateName = (target) => {
 }
 
 validateBic = (target) => {
+  if (target.value.length == 0) return
   const re = /^[a-z]{6}[2-9a-z][0-9a-np-z]([a-z0-9]{3}|x{3})?$/i;
 
   if (re.test(target.value)) {
@@ -72,6 +74,7 @@ validateBic = (target) => {
 }
 
 validateIban = (target) => {
+  if (target.value.length == 0) return
   // IBANs are fucking complicated. this is a hugely simplified check
   const re = /^[a-z]{2}[0-9]{20}$/i;
 
@@ -95,6 +98,7 @@ validateIban = (target) => {
 }
 
 validateAmount = (target) => {
+  if (target.value == 0) return
   if (parseFloat(target.value) > 0 && target.value.toString() === parseFloat(target.value).toFixed(2).toString()) {
     target.value = parseFloat(target.value).toFixed(2);
     target.classList.remove("is-danger")
@@ -106,6 +110,7 @@ validateAmount = (target) => {
 }
 
 validatePurpose = (target) => {
+  if (target.value.length == 0) return
   const re = /[a-zA-Z0-9\/?:().,'+\- ]{1,140}/i;
 
   if (re.test(target.value)) {
@@ -128,38 +133,28 @@ validatePurpose = (target) => {
 }
 
 document.querySelector("#name input").addEventListener("input", (event) => {
-  if (event.target.value.length > 0) {
   validateName(event.target);
   regenerate();
-  }
 });
 
 document.querySelector("#iban input").addEventListener("input", (event) => {
-  if (event.target.value.length > 0) {
   validateIban(event.target);
   regenerate();
-  }
 });
 
 document.querySelector("#bic input").addEventListener("input", (event) => {
-  if (event.target.value.length > 0) {
   validateBic(event.target);
   regenerate();
-  }
 });
 
 document.querySelector("#amount input").addEventListener("input", (event) => {
-  if (event.target.value.length > 0) {
   validateAmount(event.target);
   regenerate();
-  }
 });
 
 document.querySelector("#purpose input").addEventListener("input", (event) => {
-  if (event.target.value.length > 0) {
   validatePurpose(event.target);
   regenerate();
-  }
 });
 
 // Remember inputs