javascript - Am I using onchange incorrectly? -

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I am trying to put a value ( key ) which is a number corresponding update A text box ( angle ) is divided by a value ( 25 ). However, for some reason, the changeMe function does not execute. Is I misusing the exchange? 

  & lt; Script type = "text / javascript" & gt; The function changes in (x) {var y = document.getElementById (x) .value; Y = (y / 25); Y = (around mathematics (y)); Document.getElementById (key) .Value = y; } & Lt; / Script & gt; & Lt; Form method = "POST" verb = "" & gt; Your angle: & lt; Input type = "text" name = "angle" id = "angle" onchange = "changeMe (this.id)" value = "0" /> Key: & lt; Span id = "key" & gt; 0 & lt; / Span & gt; & Lt; Br / & gt; & Lt; / Form & gt;

change line 

  document.getElementById (key ) .Value = y;

to 

  document.getElementById ('key'). InnerHTML = y;

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