hack that puts button and error message beside input field, but possibly means cannot use button

projects/FrontendMentor/newbie/base-apparel-coming-soon/css/style.css

@@ -134,19 +134,25 @@ main {
 }
 
 .email-form {
+    margin: 0 auto;
     margin-top: 2rem;
-    position: relative;
+    /* position: relative; */
+    display: flex;
+    justify-content: space-between;
+    border: 1px solid var(--col-field);
+    text-align: center;
+    width: 31ch;
+    border-radius: var(--border-radius);
 }
 .email-form__input {
-    border: 1px solid var(--col-field);
+    /* width: 30ch; */
-    width: 40ch;
-
     font-size: var(--fs-field);
     line-height: var(--lh-field);
     font-weight: var(--fw-field);
     padding: 0.625rem 0 0.625rem var(--adjustment-left-field-and-error);
-    border-radius: var(--border-radius);
+    border: none;
     background: inherit;
+    width: 100%;
     color: var(--col-neutral-dark-grayish-red);
 }
 
@@ -160,13 +166,14 @@ main {
 }
 
 .email-form__button-submit {
-    position: absolute;
+    /* position: absolute; */
     padding: 0.8125rem 1.6938rem 0.8125rem 1.75rem;
     border-radius: var(--border-radius);
     box-shadow: 0px 0.9375rem 1.25rem rgba(198, 110, 110, 0.247569);
     background: var(--gradient-pink);
-    right: 0;
+    /* right: 0; */
     border: none;
+    margin-left: 0.5rem;
 
     cursor: pointer;
 }
@@ -185,6 +192,13 @@ main {
     margin-top: 0.5rem;
 }
 
+.email-form__error-icon {
+    opacity: 0;
+    height: 100%;
+    align-self: center;
+    /* width:  */
+}
+
 .error-hidden {
     opacity: 0;
 }
@@ -275,17 +289,19 @@ main {
     }
 
     .email-form {
+        margin: unset;
         margin-top: 2.5rem;
+        width: 45ch;
     }
 
     .email-form__input {
-        width: 45ch;
+        /* width: 80ch; */
         padding: 0.9375rem 0 0.9375rem var(--adjustment-left-field-and-error);
     }
 
     .email-form__button-submit {
         padding: 1.125rem 2.8188rem 1.125rem 2.875rem;
-        right: 6.875rem;
+        margin-left: 1rem;
     }
 
     .email-form__error-message {

projects/FrontendMentor/newbie/base-apparel-coming-soon/index.html

@@ -51,13 +51,15 @@
         Hello fellow shoppers! We're currently building our new fashion store.
         Add your email below to stay up-to-date with announcements and our launch deals.
       </p>
-      <form class="email-form" id="email-form" action="submit" novalidate>
+      <div class="email-form" id="email-form" action="submit" novalidate>
         <label class="visually-hidden" for="email">Email</label>
         <input class="email-form__input" placeholder="Email Address" type="email" name="email" id="email" required>
-        <button class="email-form__button-submit" type="submit"><img src="images/icon-arrow.svg" alt="Submit Button">
+        <!-- <button class="email-form__button-submit" type="submit"><img src="images/icon-arrow.svg" alt="Submit Button"> -->
-        </button>
+        <!-- </button> -->
+        <img class="email-form__error-icon" id="error-icon" src="images/icon-error.svg" alt="Error icon">
+        <img id="submit-button" class="email-form__button-submit" src="images/icon-arrow.svg" alt="Submit Button">
+      </div>
       <p class="email-form__error-message error-hidden" id="errorMessage">Please provide a valid email</p>
-      </form>
     </section>
   </main>
 

projects/FrontendMentor/newbie/base-apparel-coming-soon/js/script.js

@@ -1,26 +1,67 @@
 "uses strict";
 
+/*
+ * this is my "simple" regex for email addresses. It does not cover all the possibilities that are allowed
+ * for the local and domain parts. For a more "correct" / comprehensive regex, there is one at
+ * https://stackoverflow.com/questions/3844431/are-email-addresses-allowed-to-contain-non-alphanumeric-characters
+ *
+ * For local part you can use ASCII:
+ *   Latin letters A - Z a - z
+ *   digits 0 - 9
+ *   special characters !#$%&'*+-/=?^_`{|}~
+ *   dot ., that it is not first or last, and not in sequence
+ *   space and "(),:;<>@[] characters are allowed with restrictions (they are only allowed inside a quoted string, a backslash or double-quote must be preceded by a backslash)
+ *   Plus since 2012 you can use international characters above U+007F, encoded as UTF-8.
+ *
+ * Domain part is more restricted:
+ *   Latin letters A - Z a - z
+ *   digits 0 - 9
+ *   hyphen -, that is not first or last, multiple hyphens in sequence are allowed.
+ *
+ * Recommended regex is: ^(([^<>()\[\]\.,;:\s@\"]+(\.[^<>()\[\]\.,;:\s@\"]+)*)|(\".+\"))@(([^<>()[\]\.,;:\s@\"]+\.)+[^<>()[\]\.,;:\s@\"]{2,})
+ */
+const validEmailFormat = /^[A-Za-z0-9][\w\+]*@[A-Za-z0-9]{3,}\.[A-Za-z]{2,}$/i;
+
 const emailForm = document.getElementById("email-form");
 const emailInput = document.getElementById("email");
+const submitButton = document.getElementById("submit-button");
 const errorMessage = document.getElementById("errorMessage");
+const errorIcon = document.getElementById("error-icon");
 
-emailForm.addEventListener("submit", checkEmailValidity, false);
+submitButton.addEventListener("click", checkEmailValidity, false);
 emailInput.addEventListener("focus", inputFocused, false);
 
 /**
  * @param   {[Event]}  event
  */
 function checkEmailValidity(event) {
-    if (emailForm.checkValidity() === false) {
+    if (validateEmailAddress() === false) {
         event.preventDefault();
         emailInput.classList.add("error-border");
         errorMessage.classList.add("error-visible");
+        errorIcon.classList.add("error-visible");
     } else {
         emailInput.classList.remove("error-border");
         errorMessage.classList.remove("error-visible");
     }
 }
 
+/*
+ */
+function validateEmailAddress() {
+    const submittedEmailAddress = emailInput.value;
+    // test email is valid via regex
+    const isValidEmailAddress = validEmailFormat.test(submittedEmailAddress);
+
+    if (submittedEmailAddress.length === 0) {
+        return false;
+    } else if (!isValidEmailAddress) {
+        return false;
+    } else {
+        return true;
+    }
+}
+
 // When an input has focus I remove the error state,
 function inputFocused(event) {
     /**
@@ -32,5 +73,35 @@ function inputFocused(event) {
     if (input.classList.contains("error-border")) {
         input.classList.remove("error-border");
         errorMessage.classList.remove("error-visible");
+        errorIcon.classList.remove("error-visible");
     }
 }
+
+function testRegex() {
+    console.log("Should all be false");
+    console.log(validEmailFormat.test("submittedEmailAddress"));
+    console.log(validEmailFormat.test("s@.NET"));
+    console.log(validEmailFormat.test("@"));
+    console.log(validEmailFormat.test("@."));
+    console.log(validEmailFormat.test("@.net"));
+    console.log(validEmailFormat.test("@tarasis.net"));
+    console.log(validEmailFormat.test("adsadasds@"));
+    console.log(validEmailFormat.test("__submittedEmailAddress"));
+    console.log(validEmailFormat.test("spam@tarasis.99"));
+    console.log(validEmailFormat.test("rob@.net"));
+    console.log(validEmailFormat.test("spam@tarasis"));
+    console.log(validEmailFormat.test("spam@tarasis.a"));
+    console.log(validEmailFormat.test("s@ta.net"));
+    console.log(validEmailFormat.test("_@tarasis.net"));
+    console.log(validEmailFormat.test("_3@tarasis.net"));
+
+    console.log("\n Should all be true");
+    console.log(validEmailFormat.test("spam@tarasis.net"));
+    console.log(validEmailFormat.test("rob@tad.io"));
+    console.log(validEmailFormat.test("s@tarasis.net"));
+    console.log(validEmailFormat.test("s@tarasis.net"));
+    console.log(validEmailFormat.test("s_@tarasis.net"));
+    console.log(validEmailFormat.test("s+blah@tarasis.net")); // this can be true, some servers use this for filtering
+}
+
+// testRegex();