Validate Currency

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Submitted on: 11/10/2002 11:32:22 PM
By: qwerty1977
Level: Intermediate
User Rating: Unrated
Compatibility:JavaScript

Users have accessed this code 1412 times.

This is a function that will validate american currency formats.

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//**************************************
//     
//HTML for :Validate Currency
//**************************************
//     
<FORM>
<INPUT name="cost" type="text" id="cost">
<INPUT type="submit" value="Test" onclick="return check(this.form)">
</FORM>

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//**************************************
//     
// Name: Validate Currency
// Description:This is a function that w
//     ill validate american currency formats.
// By: qwerty1977
//
// Inputs:function accepts string value.
//     
//
// Returns:returns boolean.
//
// Assumes:basic knowledge of regular ex
//     pressions.
//
// Side Effects:none aware of.
//
//This code is copyrighted and has// limited warranties.Please see http://
//     www.Planet-Source-Code.com/vb/scripts/Sh
//     owCode.asp?txtCodeId=3287&lngWId;=2//for details.//**************************************
//     

function check(form) 
    {
    	var strValue = form.cost.value;
    	if (strValue != '')
        	{
        		if (!(isCurrency(strValue)))
            		{
            			alert('Please enter a valid currency for Cost.');
            			return false;
            		}
            	}
        }

        function isCurrency(strValue)
            {
            	objRegExp = /\)|\(|[,]|[$]/g;
            	var strValue_Temp = strValue.replace(objRegExp,'');
            	if (isNumeric(strValue_Temp))
                	{
                		//BEGINS with NUMBER AND NUMBER = 1,000,000 | 1.99 . . . 
                		objRegExp = /^([0-9]{1,3},([0-9]{3},)*[0-9]{3}|[0-9]+)(\.[0-9][0-9])?$|^([0-9]?\.)([0-9][0-9])$/;
                		if (objRegExp.test(strValue))
                    		{
                    			return objRegExp.test(strValue);
                    		}
                    		//BEGINS with $ AND NUMBER = 1,000,000 | 1.99 . . . 
                    		objRegExp = /^(\${1})([0-9]{1,3},([0-9]{3},)*[0-9]{3}|[0-9]+)(\.[0-9][0-9])?$|^(\${1}[0-9]?\.)([0-9][0-9])$/;
                    		if (objRegExp.test(strValue))
                        		{
                        			return objRegExp.test(strValue);
                        		}		
                        		//BEGINS with $- AND NUMBER = 1,000,000 | 1.99 . . . 
                        		objRegExp = /^(\${1}[-]{1})([0-9]{1,3},([0-9]{3},)*[0-9]{3}|[0-9]+)(\.[0-9][0-9])?$|^(\${1}[-]{1}[0-9]?\.)([0-9][0-9])$/;
                        		if (objRegExp.test(strValue))
                            		{
                            			return objRegExp.test(strValue);
                            		}		
                            		//BEGINS with -$ AND NUMBER = 1,000,000 | 1.99 . . . 
                            		objRegExp = /^([-]{1}\${1})([0-9]{1,3},([0-9]{3},)*[0-9]{3}|[0-9]+)(\.[0-9][0-9])?$|^([-]{1}\${1}[0-9]?\.)([0-9][0-9])$/;
                            		if (objRegExp.test(strValue))
                                		{
                                			return objRegExp.test(strValue);
                                		}	
                                		//BEGINS with - AND NUMBER = 1,000,000 | 1.99 . . . 
                                		objRegExp = /^([-]{1})([0-9]{1,3},([0-9]{3},)*[0-9]{3}|[0-9]+)(\.[0-9][0-9])?$|^([-]{1}[0-9]?\.)([0-9][0-9])$/;
                                		if (objRegExp.test(strValue))
                                    		{
                                    			return objRegExp.test(strValue);
                                    		}		
                                    		//BEGINS with ( ENDS WITH ) AND NUMBER = 1,000,000 | 1.99 . . . 
                                    		objRegExp = /^(\({1})([0-9]{1,3},([0-9]{3},)*[0-9]{3}|[0-9]+)((\.[0-9][0-9]\){1})$|(\){1})$)|^(\({1}\.{1})([0-9][0-9]\){1})$/;
                                    		if (objRegExp.test(strValue))
                                        		{
                                        			return objRegExp.test(strValue);
                                        		}		
                                        		//BEGINS with ($ ENDS WITH ) AND NUMBER = 1,000,000 | 1.99 . . . 
                                        		objRegExp = /^(\({1}\${1})([0-9]{1,3},([0-9]{3},)*[0-9]{3}|[0-9]+)((\.[0-9][0-9]\){1})$|(\){1})$)|^(\(\${1}{1}\.{1})([0-9][0-9]\){1})$/;
                                        		if (objRegExp.test(strValue))
                                            		{
                                            			return objRegExp.test(strValue);
                                            		}	
                                            		//BEGINS with $( ENDS WITH ) AND NUMBER = 1,000,000 | 1.99 . . . 
                                            		objRegExp = /^(\${1}\({1})([0-9]{1,3},([0-9]{3},)*[0-9]{3}|[0-9]+)((\.[0-9][0-9]\){1})$|(\){1})$)|^(\${1}\({1}\.{1})([0-9][0-9]\){1})$/;
                                            		if (objRegExp.test(strValue))
                                                		{
                                                			return objRegExp.test(strValue);
                                                		}					
                                                		return false
                                                	}
                                                	else
                                                    	{
                                                    		return false;
                                                    	}
                                                }

                                                
                                                function isNumeric(strValue)
                                                    {
                                                    	var objRegExp = /(^-?\d\d*\.\d*$)|(^-?\d\d*$)|(^-?\.\d\d*$)/; 
                                                    	//check for numeric characters 
                                                    	return objRegExp.test(strValue);
                                                }

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