Implementation of Input Text Box Extending Automatically with Input Content

  • 2021-07-21 07:09:23
  • OfStack

Examples are as follows:


<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> 
<html xmlns="http://www.w3.org/1999/xhtml"> 
<head> 
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> 
<title> Untitled document </title> 
<script language="javascript"> 
function checkLength(which) { 
  var oTextCount = document.getElementById("char");  
  iCount = which.value.replace(/[^/u0000-/u00ff]/g,"aa"); 
  oTextCount.innerHTML = "<font color=#FF0000>"+ iCount.length+"</font>"; 
  which.style.border = '1px dotted #FF0000'; 
which.size=iCount.length+2; 
} 
 </script> 
</head> 
<body> 
<input name="words" size="2"  onkeyup="checkLength(this)"/> 
  <span id="char">0</span> Characters  
</body> 
</html>

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