Realize text typewriter effect in WeChat applet

Realize the text typewriter effect in WeChat Mini Program

As an emerging application development method, WeChat Mini Program has been widely used in various industries. In mini programs, text is one of the most basic forms of display. Sometimes in order to increase interest and attract user attention, we can use a text typewriter effect to present text content. This article will introduce how to implement text typewriter effects in WeChat mini programs and provide specific code examples.

First, create a view container in the wxml file of the applet to display the text content with the text typewriter effect. The sample code is as follows:

<view class="typewriter-container">
  <text class="typewriter-text">这是文字打字机效果演示</text>
</view>

Next, add styles to the view container and text content in the wxss file. The sample code is as follows:

.typewriter-container {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
}

.typewriter-text {
  font-size: 28rpx;
  font-weight: bold;
}

Then, write the logic code to achieve the text typewriter effect in the js file of the mini program. First define two variables, representing the currently displayed text and the timer of the typewriter effect:

Page({
  data: {
    text: '', // 当前显示的文本
    timer: null // 打字机效果的计时器
  },

  // 生命周期函数--监听页面加载
  onLoad: function() {
    this.typewriterEffect('这是文字打字机效果演示');
  },

  // 实现文字打字机效果的方法
  typewriterEffect(text) {
    let index = 0;
    this.data.timer = setInterval(() => {
      if (index < text.length) {
        this.setData({
          text: this.data.text + text[index]
        });
        index++;
      } else {
        clearInterval(this.data.timer);
      }
    }, 100);
  },
});

In this code, we call the typewriterEffect method when the page is loaded, and pass Enter the text that needs to be displayed. typewriterEffect A timer is used in the method to add a character to the currently displayed text every 100 milliseconds until it is completely displayed. After the text is fully displayed, we clear the timer.

Finally, configure the current page in the entry file app.json of the WeChat applet. The sample code is as follows:

{
  "pages": [
    "pages/index/index"
  ],
  "window": {
    "backgroundTextStyle": "light",
    "navigationBarBackgroundColor": "#fff",
    "navigationBarTitleText": "文字打字机效果",
    "navigationBarTextStyle": "black"
  },
  "sitemapLocation": "sitemap.json"
}

So far, we have completed the process of realizing the Chinese character typewriter effect in the WeChat applet. When users visit the mini program page, they will see the text gradually typing effect. You can modify the corresponding text content and style according to your own needs.

Through the above code examples, we can see that it is not complicated to implement the Chinese character typewriter effect in the WeChat applet. By making reasonable use of the functions and features provided by mini programs, we can bring users a more vivid and interesting application experience. I hope the code examples in this article can help you achieve the text typewriter effect.

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