Text box can only enter numbers. Implementation method of compatible IE Firefox

  • 2021-07-01 06:14:33
  • OfStack

The text box can only enter numbers (compatible with IE Firefox)


<!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" type="text/javascript"> 
// Note: Firefox uses event When,  
function inputNum(evt){ 
  // Firefox usage evt.which Gets the keyboard key values, IE Use window.event.keyCode Get keyboard key values 
  var ev = evt.which?evt.which:window.event.keyCode;
  if(ev>=48&&ev<=57){
    return true;  
  }else{
    return false;
  } 
}  
</script>  
</head>
<body>
  <input type="text" onKeyPress="return inputNum(event);" > 
</body>
</html>

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