arguments.length : arguments « Function « JavaScript Tutorial






  1. JavaScript Tutorial
  2. Function
  3. arguments

The length property contains the number of arguments that were passed into the function.

This number matches the number of elements in the arguments array associated with the Argument object.

<html>
    <form>
    <input type="button" value="A" OnClick=myFunction(this,"A","B","C")>
    <input type="button" value="B" OnClick=myFunction(this,"D","E")>
    <input type="button" value="C" OnClick=myFunction(this,"F")>
    <input type="button" value="D" OnClick=myFunction(this,"G","H")>
    <input type="button" value="E" OnClick=myFunction(this,"I")>
    </form>
    <script language="JavaScript">
    <!--
    function myFunction()
    {
      var aString = arguments[0].value;
      aString += "'s are: ";
      for(var i=1; i<arguments.length; i++)
      {
        aString += arguments[i];
        aString += ", ";
      }
      alert(aString);
    }
    -->
    </script>
    </html>








7.4.arguments
7.4.1.arguments
7.4.2.arguments.callee
7.4.3.arguments.caller
7.4.4.arguments.length
7.4.5.Use arguments.callee.toString() to get the source of the function
7.4.6.Accessing Function Arguments with the arguments Array
7.4.7.Get function parameter length