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🎨 Palette: Add loading states to authentication forms #176

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🎨 Palette: Add loading states to authentication forms #176

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3 changes: 3 additions & 0 deletions .Jules/palette.md
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Original file line number Diff line number Diff line change
@@ -0,0 +1,3 @@
## 2026-06-23 - Form Submitter Loading States
**Learning:** Native `e.submitter` on `submit` events reliably provides the button used to submit a form, allowing for dynamic visual loading states without hardcoding button IDs or changing core app logic.
**Action:** Use `e.submitter` to gracefully handle visual loading styles (disabled, opacity, cursor) during async form submissions.
34 changes: 34 additions & 0 deletions web-demo/js/app.js
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Expand Up @@ -145,6 +145,16 @@ class ClimaAI {
const email = document.getElementById('loginEmail').value;
const password = document.getElementById('loginPassword').value;

const submitBtn = e.submitter;
let originalContent = '';
if (submitBtn) {
originalContent = submitBtn.innerHTML;
submitBtn.innerHTML = '⏳ Loading...';
submitBtn.disabled = true;
submitBtn.style.opacity = '0.7';
submitBtn.style.cursor = 'not-allowed';
}

try {
this.showToast('Logging in...', 'info');
const response = await api.login(email, password);
Expand All @@ -155,6 +165,13 @@ class ClimaAI {
this.checkSubscription();
} catch (error) {
this.showToast(error.message || 'Login failed', 'error');
} finally {
if (submitBtn) {
submitBtn.innerHTML = originalContent;
submitBtn.disabled = false;
submitBtn.style.opacity = '';
submitBtn.style.cursor = '';
}
}
}

Expand All @@ -164,6 +181,16 @@ class ClimaAI {
const email = document.getElementById('registerEmail').value;
const password = document.getElementById('registerPassword').value;

const submitBtn = e.submitter;
let originalContent = '';
if (submitBtn) {
originalContent = submitBtn.innerHTML;
submitBtn.innerHTML = '⏳ Loading...';
submitBtn.disabled = true;
submitBtn.style.opacity = '0.7';
submitBtn.style.cursor = 'not-allowed';
}

try {
this.showToast('Creating account...', 'info');
const response = await api.register(email, password, name);
Expand All @@ -174,6 +201,13 @@ class ClimaAI {
this.checkSubscription();
} catch (error) {
this.showToast(error.message || 'Registration failed', 'error');
} finally {
if (submitBtn) {
submitBtn.innerHTML = originalContent;
submitBtn.disabled = false;
submitBtn.style.opacity = '';
submitBtn.style.cursor = '';
}
}
}

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