Text box can only enter numbers js code of with decimal point

  • 2021-07-02 23:08:01
  • OfStack

You can only enter more than 0-9 including decimal points

<meta http-equiv="content-Type" content="text/html;charset=gb2312">
<title>js  You can only enter numbers and decimal points </title>

<script language="JavaScript" type="text/javascript">
function clearNoNum(obj)
  obj.value = obj.value.replace(/[^\d.]/g,""); // Clear "number" and " . Characters other than " 
  obj.value = obj.value.replace(/^\./g,""); // Verify the 1 Characters are numbers instead of .
  obj.value = obj.value.replace(/\.{2,}/g,"."); // Keep only the 1 A .  Clear the redundant .
  obj.value = obj.value.replace(".","$#$").replace(/\./g,"").replace("$#$",".");

 Text boxes for which only numbers and decimal points can be entered: <input name="input1" onkeyup="clearNoNum(this)">

Related articles: