removing all option of dropdown box in javascript

Question

How can i dynamically remove all options of a drop down box in javascript?

Answer 1

The fastest solution I was able to find is the following code (taken from this article):

// Fast javascript function to clear all the options in an HTML select element
// Provide the id of the select element
// References to the old  object will become invalidated!
// This function returns a reference to the new select object.
function ClearOptionsFast(id)
{
    var selectObj = document.getElementById(id);
    var selectParentNode = selectObj.parentNode;
    var newSelectObj = selectObj.cloneNode(false); // Make a shallow copy
    selectParentNode.replaceChild(newSelectObj, selectObj);
    return newSelectObj;
}

    

             

                                                        
            
            

              
                
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