Try/catch statements are used in conjunction with methods that can throw exceptions. If HTML5 audio is supported, there are other errors that might happen.
#Html5 audio element code
If the audio element does not exist no code is executed. Each function tests by using if (window.HTMLAudioElement) to see if the audio element exists. The first is when you check for HTML5 audio support. In the JavaScript section of the code, there are areas where errors are likely. Fail silently but show in F12 developer tools console }// Tests the paused attribute and set state. Var audioURL = document.getElementById(‘mylist’) //Skip loading if current file hasn’t changed. Var btn = document.getElementById(‘play’) Var oAudio = document.getElementById(‘myaudio’) Var currentFile = “” //Global variable to track current file If these values are different, the src property is set to the new file URL, the “currentFile” variable is updated, and the load method is called. When the user clicks the Play button, the “currentFile” variable is compared to the value in the text field that is specified by “audioURL.value”. The global variable “currentFile” is defined so that it keeps track of the URL for the file that is currently playing. To play more than one file, you can set the audio object’s src property to a URL of an audio file from within JavaScript. In the JavaScript portion, using document.getElementById, the audio object is returned in oAudio, the button object is returned in btn and list object is returned in audioURL. When a file is first loaded, the paused property returns true (playback is paused) even though the pause method has not explicitly been called. If the file is paused, the paused property returns true, and the play method is called, the button label is updated to Pause. If the audio file is playing, the paused property returns false, and the pause method is called to pause the playback. The state is checked every time the “playAudio” function is called.
The button object is retrieved so that the button label can be toggled between Play and Pause, depending on the state of the audio object’s paused property. The play and pause methods are used to provide playback control.
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