How to solve the problem of browser scrolling caused by sliding to delete list items on the mobile side in Vue development

How to solve the problem of browser scrolling caused by sliding to delete list items on the mobile side in Vue development

With the development of the mobile Internet, more and more websites and applications are beginning to adopt mobile development. In mobile development, the function of sliding to delete list items is becoming more and more common. However, when we use sliding to delete list items in mobile applications, we will encounter a common problem: sliding to delete list items will cause the browser to scroll, affecting the user's operating experience.

In Vue development, we can solve this problem through some methods. This article will introduce a solution to help developers solve the browser scrolling problem caused by sliding to delete list items on the mobile terminal.

First of all, before solving the problem, we need to clarify the cause of the problem. When we slide a list item on a mobile device, we are actually triggering the browser's default behavior. By default, browsers interpret sliding operations as page scrolling rather than sliding deletion of list items. Therefore, we need to prevent the browser's default behavior to achieve the effect of sliding to delete list items.

In Vue development, we can solve this problem through the following steps:

The first step is to bind touchstart and touchend events to the list items. We need to listen to the touch events of the list items to capture the user's actions of starting and ending the swipe.

The second step is to record the starting position of the user's touch in the touchstart event. We can use the touches attribute of the event object to obtain the coordinates of the touch point.

The third step is to calculate the distance the user slides in the touchend event. We need to compare the coordinates at the end of the user's touch with the coordinates at the start of the touch to determine the user's sliding direction and distance.

The fourth step is to determine whether to perform a sliding delete operation based on the user's sliding direction and distance. If the sliding distance exceeds a certain threshold and the sliding direction is horizontal, the sliding delete operation is performed.

The fifth step is to prevent the browser’s default behavior. When performing a sliding delete operation, we need to prevent the browser's default behavior by calling the preventDefault method of the event object to avoid page scrolling.

The following is a sample code that shows how to use Vue to solve the browser scrolling problem caused by sliding to delete list items on the mobile side:

<template>
  <div>
    <ul>
      <li v-for="(item, index) in list"
        :key="index"
        @touchstart="handleTouchStart"
        @touchend="handleTouchEnd"
      >
        {{ item }}
      </li>
    </ul>
  </div>
</template>

<script>
export default {
  data() {
    return {
      list: ['Apple', 'Banana', 'Orange']
    }
  },
  methods: {
    handleTouchStart(event) {
      this.startX = event.touches[0].pageX; // 记录触摸起始位置
    },
    handleTouchEnd(event) {
      const endX = event.changedTouches[0].pageX; // 获取触摸结束位置
      const distance = endX - this.startX; // 计算滑动距离

      if (Math.abs(distance) > 50) { // 判断滑动距离是否超过阈值
        // 进行滑动删除操作
        if (distance > 0) {
          // 向右滑动
          console.log('delete item');
        } else {
          // 向左滑动
          console.log('delete item');
        }
      }
      event.preventDefault(); // 阻止浏览器的默认行为
    }
  }
}
</script>

With the above code, we can solve the problem of sliding to delete on the mobile side Browser scrolling issues caused by list items. By listening to touch events and preventing the browser's default behavior, we can implement the function of sliding to delete list items while avoiding the scrolling of the browser.

In summary, the browser scrolling problem caused by sliding to delete list items on the mobile terminal can be solved by preventing the browser's default behavior. In Vue development, we can realize the function of sliding to delete list items by listening to touch events and preventing the browser's default behavior through the preventDefault method of the event object. Through the above methods, we can improve the user experience of mobile applications and make it easier for users to operate list items.

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