Implement web recording based on jquery

With the development of the Internet industry, more and more people are beginning to conduct voice communication online. However, for some websites or applications that need to record voice data, how to implement the recording function is an important challenge. This article will introduce a web recording solution based on jQuery to help developers quickly implement the recording function.

1. Requirements Analysis

Before implementing the web recording function, we need to determine some demand issues first.

1. Recording format: The recording format needs to be a format that supports Web Audio API, such as OGG or WAV.
2. Recording duration: You need to consider the maximum recording duration and the size of the recording capacity.
3. Recording device: You need to consider which recording devices are supported, such as microphones or microphones.
4. Recording control: It is necessary to provide control for starting recording, stopping recording, and re-recording.
5. Recording results: It is necessary to save and share the recording results.

2. Technical Solution

After determining the needs, we need to choose a suitable technical solution to realize the recording function. Currently, the more commonly used solutions include Flash recording, HTML5 recording and third-party plug-in solutions. This article will use the HTML5 recording solution based on jQuery to explain.

1. HTML5 Recording

HTML5 recording uses the Web Audio API to implement a series of operations such as audio recording, playback, and compression. Web audio API consists of two parts: audio interface and audio processing interface. Among them, the audio interface is used to control basic operations such as audio playback and recording, and the audio processing interface is used to process audio data and implement advanced functions such as audio special effects.

2. jQuery-based recording solution

We will use the jQuery library to control and operate audio on the Web page. For the implementation of HTML5 recording, we use the third-party library recorder.js, which provides some convenient and easy-to-use APIs to help us complete the recording function.

3. Specific implementation

The following are the specific steps to implement web recording based on jQuery:

1. Introduce relevant library files

Introduce the JS and css files of jQuery and Recorder.js.

<script src="https://cdn.bootcss.com/jquery/1.12.4/jquery.min.js"></script>
<script src="recorder.js"></script>
<link rel="stylesheet" href="recorder.css">

2. Define the HTML structure

Define the relevant HTML structure of recording in the page, including starting recording and stopping recording , re-recording and other operation buttons.

<div>
  <button id="btnStart">开始录音</button>
  <button id="btnStop">停止录音</button>
  <button id="btnRedo">重新录制</button>
</div>
<div>
  <div id="audio" style="display:none"></div>
  <audio controls="controls" id="audioSource"></audio>
</div>

3. Initialize Recorder.js

var audio = $('#audio');
audio.hide();
var rec = Recorder({
  type: 'ogg',
  sampleBits: 16, 
  sampleRate: 16000,
  onData: function(data) {

  },
  onStop: function(audioURL) {
    $('#audioSource').attr('src', audioURL);
    audio.show();
  }
});

4. Bind operation button events

$('#btnStart').click(function(){
  rec.record();     
});

$('#btnStop').click(function(){
  rec.stop();       
});

$('#btnRedo').click(function(){
  rec.clear();      
});

five , Rendering

The final effect is shown in the figure below:

6. Summary

This article introduces web recording based on jQuery solution, the recording function can be easily implemented using the Recorder.js library. Of course, in actual development, details need to be adjusted according to specific needs. We hope that the introduction in this article can help developers better implement the web recording function, so that more users can enjoy a better voice communication experience.

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