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The word count function, the principle is to add onkeyup event to textarea, the event reads textarea content and obtains the length, and assigns the value to the statistic Word number the text node, here one thing to notice is adds onkeypress and the onkeydown event also can achieve the effect, But there are some shortcomings that will cause misunderstandings in some cases, and I have tried to feel that using only one onkeyup event is the wisest choice.
<!DOCTYPE HTML><HTML><Head><MetaCharSet= "Utf-8"><title>Test file</title><Script>functioncal_words () {varlength=document.getElementById ("Test"). Value.length; document.getElementById ("Num"). InnerHTML=length;}</Script></Head><Body><Divclass= "Reply"> <textareaID= "Test"onKeyUp= "Cal_words ()"></textarea> <Div>Words:<spanID= "num">0</span></Div></Div></Body></HTML>
JavaScript word Count
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