Javascript: hidden embed tag doesn't respond to Play()
In the following code snippet on Firefox (Mac OS), the Play() function is not found/does nothing.
<script> function EvalSound(soundobj) {
var thissound=document.getElementById(soundobj); thissound.Play();
} </script>
<embed src="success.wav" autostart=false width=0 height=0 id="sound1" enablejavascript="true">
<form> <input type="button" value="Play Sound" onClick="EvalSound('sound1')"> </form>
The <embed> tag is non-standard, but the above code works on Windows (IE, Chrome, Firefox) + Mac (Safari + Chrome).
A workaround is to give the <embed> tag attributes height=1 width=1 (resulting in a single pixel showing). Setting either height + width=0 or hidden=true seems to hide the DOM object from Javascript.
Security feature? Optimization?
所有回覆 (2)
Does it work if you place the embed in a DIV container that has display:none or visibility:hidden ?
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Placing the embed in a hidden div container also breaks Play().
As far as I can tell, the <embed> must be visible.