Loading Spinner Button - Free UI Component

Button Color #2563eb

Text Color #ffffff

Spinner Color #ffffff

Button Label Submit Request

Show Loading State

Rounding (px) 12

Vertical Padding (rem) 1

Horizontal Padding (rem) 2.5

Font Size (rem) 1.1

Glow Intensity (px) 14

Loading Spinner Button

A professional loading state button featuring a smooth spinner animation and layout transition. Perfect for form submissions and AJAX-heavy interactions.

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Loading Spinner Button</title>
    <link rel="preconnect" href="https://fonts.googleapis.com">
    <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
    <link href="https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@500;600;700;800&display=swap" rel="stylesheet">
    <style>
        /* -- Variables ------------------------------------------------- */
        :root {
            --primary: {{primaryColor}};         /* Main Button Color */
            --text: {{textColor}};               /* Button Text Color */
            --spinner: {{spinnerColor}};         /* Spinner Line Color */
            --radius: {{borderRadius}}px;        /* Corner Rounding */
            --v-pad: {{vPadding}}rem;            /* Top/Bottom Padding */
            --h-pad: {{hPadding}}rem;            /* Left/Right Padding */
            --font-size: {{fontSize}}rem;        /* Text Size */
            --glow: {{glowIntensity}}px;         /* Glow/Shadow Spread */
            --page-bg: #0f172a;                  /* Preview Background */
        }

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
            font-family: 'Plus Jakarta Sans', sans-serif;
            background-color: var(--page-bg);
            display: flex;
            align-items: center;
            justify-content: center;
            min-height: 100vh;
            color: #fff;
        }

/* -- Button Implementation --------------------------------------- */
        .btn-loading {
            position: relative;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: var(--v-pad) var(--h-pad);
            font-size: var(--font-size);
            font-weight: 700;
            color: var(--text);
            background: var(--primary);
            border: none;
            border-radius: var(--radius);
            cursor: pointer;
            text-decoration: none;
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            box-shadow: 0 4px 14px 0 color-mix(in srgb, var(--primary), transparent 60%);
            overflow: hidden;
            min-width: 180px; /* Ensure enough room for swap */
            outline: none;
        }

.btn-loading:hover:not(.loading) {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px 0 color-mix(in srgb, var(--primary), transparent 40%);
            filter: brightness(1.1);
        }

.btn-loading:active:not(.loading) {
            transform: translateY(0);
        }

/* Text Layer */
        .btn-text {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: all 0.3s ease;
        }

/* Spinner Layer */
        .spinner {
            position: absolute;
            width: 20px;
            height: 20px;
            border: 3px solid color-mix(in srgb, var(--spinner), transparent 80%);
            border-top: 3px solid var(--spinner);
            border-radius: 50%;
            opacity: 0;
            transform: scale(0.5);
            transition: all 0.3s ease;
        }

/* Loading State Logic */
        .btn-loading[data-loading="Yes"] {
            cursor: wait;
            filter: grayscale(0.2) brightness(0.9);
        }

.btn-loading[data-loading="Yes"] .btn-text {
            opacity: 0;
            transform: translateY(10px);
            visibility: hidden;
        }

.btn-loading[data-loading="Yes"] .spinner {
            opacity: 1;
            transform: scale(1);
            animation: spin 1s linear infinite;
        }

@keyframes spin {
            from { transform: rotate(0deg); }
            to { transform: rotate(360deg); }
        }

</style>
</head>
<body>

<button class="btn-loading" data-loading="{{isLoading}}" onclick="this.setAttribute('data-loading', this.getAttribute('data-loading') === 'Yes' ? 'No' : 'Yes')">
        <span class="btn-text">{{buttonText}}</span>
        <div class="spinner"></div>
    </button>

</body>
</html>