SpeechRecognitionResult

Experimental: 这是一个实验中的功能
此功能某些浏览器尚在开发中,请参考浏览器兼容性表格以得到在不同浏览器中适合使用的前缀。由于该功能对应的标准文档可能被重新修订,所以在未来版本的浏览器中该功能的语法和行为可能随之改变。

The SpeechRecognitionResult interface of the Web Speech API represents a single recognition match, which may contain multiple SpeechRecognitionAlternative (en-US) objects.

Properties

SpeechRecognitionResult.isFinal 只读
A Boolean (en-US) that states whether this result is final (true) or not (false) — if so, then this is the final time this result will be returned; if not, then this result is an interim result, and may be updated later on.
SpeechRecognitionResult.length (en-US) 只读
Returns the length of the "array" — the number of SpeechRecognitionAlternative (en-US) objects contained in the result (also referred to as "n-best alternatives".)

Methods

SpeechRecognitionResult.item (en-US)
A standard getter that allows SpeechRecognitionAlternative (en-US) objects within the result to be accessed via array syntax.

Examples

This code is excerpted from our Speech color changer example.

recognition.onresult = function(event) {
  // The SpeechRecognitionEvent results property returns a SpeechRecognitionResultList object
  // The SpeechRecognitionResultList object contains SpeechRecognitionResult objects.
  // It has a getter so it can be accessed like an array
  // The first [0] returns the SpeechRecognitionResult at position 0.
  // Each SpeechRecognitionResult object contains SpeechRecognitionAlternative objects that contain individual results.
  // These also have getters so they can be accessed like arrays.
  // The second [0] returns the SpeechRecognitionAlternative at position 0.
  // We then return the transcript property of the SpeechRecognitionAlternative object
  var color = event.results[0][0].transcript;
  diagnostic.textContent = 'Result received: ' + color + '.';
  bg.style.backgroundColor = color;
}

Specifications

Specification Status Comment
Web Speech API
SpeechRecognitionResult
Draft  

Browser compatibility

BCD tables only load in the browser

See also