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js实现toast

2026-04-06 16:29:41JavaScript

实现Toast通知的基本方法

使用纯JavaScript实现Toast通知，可以通过动态创建DOM元素并添加动画效果来完成。以下是一个基础实现示例：

function showToast(message, duration = 3000) {
  const toast = document.createElement('div');
  toast.className = 'toast-notification';
  toast.textContent = message;

  document.body.appendChild(toast);

  setTimeout(() => {
    toast.classList.add('show');
  }, 10);

  setTimeout(() => {
    toast.classList.remove('show');
    setTimeout(() => {
      document.body.removeChild(toast);
    }, 300);
  }, duration);
}

配套CSS样式

Toast通知需要基本的样式来确保美观和动画效果：

.toast-notification {
  position: fixed;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  background-color: #333;
  color: white;
  padding: 12px 24px;
  border-radius: 4px;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.toast-notification.show {
  opacity: 1;
}

进阶实现方案

对于更复杂的Toast系统，可以考虑以下增强功能：

js实现toast

class Toast {
  constructor() {
    this.container = document.createElement('div');
    this.container.className = 'toast-container';
    document.body.appendChild(this.container);
  }

  show(message, options = {}) {
    const { duration = 3000, type = 'default' } = options;
    const toast = document.createElement('div');
    toast.className = `toast toast-${type}`;
    toast.textContent = message;

    this.container.appendChild(toast);
    setTimeout(() => toast.classList.add('show'), 10);

    setTimeout(() => {
      toast.classList.remove('show');
      setTimeout(() => toast.remove(), 300);
    }, duration);
  }
}

// 使用示例
const toast = new Toast();
toast.show('操作成功', { type: 'success', duration: 2000 });

配套增强CSS

.toast-container {
  position: fixed;
  bottom: 20px;
  left: 0;
  right: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  pointer-events: none;
  z-index: 1000;
}

.toast {
  margin-bottom: 10px;
  padding: 12px 24px;
  border-radius: 4px;
  opacity: 0;
  transition: opacity 0.3s ease, transform 0.3s ease;
  transform: translateY(20px);
}

.toast.show {
  opacity: 1;
  transform: translateY(0);
}

.toast-default {
  background-color: #333;
  color: white;
}

.toast-success {
  background-color: #4CAF50;
  color: white;
}

.toast-error {
  background-color: #F44336;
  color: white;
}