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VBScript IsNull Function
The IsNull function returns a Boolean value that indicates whether a specified expression contains no valid data (Null). It returns True if expression is Null;
VBScript VarType Function
The VarType function can return one of the following values: 0 = vbEmpty - Indicates Empty (uninitialized); 1 = vbNull - Indicates Null (no valid data)
VBScript InStr Function
VBScript InStr Function The InStr function can return the following values: If string1 is "" - InStr returns 0; If string1 is Null - InStr returns Null; If string2 is "" - InStr
VBScript CStr Function
Reference Complete VBScript Reference. The CStr function converts an expression to type String. Null - then a run-time error will occur. Empty - then the
VBScript Functions
This page contains all the built-in VBScript functions. String functions; Other functions .... IsNull, Returns a Boolean value that indicates whether a specified
VBScript StrComp Function
The StrComp function can return one of the following values: -1 (if string1 < string2); 0 (if string1 = string2); 1 (if string1 > string2); Null (if string1 or string2 is Null)
VBScript InStrRev Function
VBScript InStrRev Function The InStrRev function can return the following values: If string1 is "" - InStrRev returns 0; If string1 is Null - InStrRev returns Null
VBScript Abs Function
VBScript Abs Function. VBScript Reference Complete VBScript Reference Note: If the number parameter contains Null, Null will be returned. Note: If the
VBScript IsEmpty Function
The IsEmpty function returns a Boolean value that indicates whether a x=Null document.write(IsEmpty(x)) </script>. The output of the code above will be: True
VBScript Filter Function
VBScript Filter Function. VBScript Reference Complete VBScript Reference Note: If the parameter inputstrings is Null or is NOT a one-dimensional array,
VBScript Hex Function
Complete VBScript Reference. The Hex function returns a string that represents the hexadecimal value of a specified Null - then the Hex function returns Null.
VBScript Keywords
Dim x 'the variable x is uninitialized! x="ff" 'the variable x is NOT uninitialized anymore x=Empty 'the variable x is uninitialized! Note: This is not the same as Null!
VBScript TypeName Function
The TypeName function returns the subtype of a specified variable. Null - Indicates no valid data; <object type> - Indicates the actual type name of an object
VBScript FormatNumber Function
Parameter, Description. expression, Required. The expression to be formatted. NumDigAfterDec, Optional. Indicates how many places to the right of the decimal
VBScript Int Function
VBScript Int Function The Int function returns the integer part of a specified number. Note: If the number parameter contains Null, Null will be returned. Tip: Also
VBScript IsArray Function
The IsArray function returns a Boolean value that indicates whether a specified variable is an array. If the variable is an array, it returns True, otherwise, it returns
SQL AVG() Function
SQL AVG() Function. « Previous · Next Chapter ». The AVG() Function. The AVG( ) function returns the average value of a numeric column.
SQL UCASE() Function
SQL UCASE() Function. « Previous · Next Chapter ». The UCASE() Function. The UCASE() function converts the value of a field to uppercase.
to check null value from database
Join Date: Jul 2004; Posts: 300. are you using vbscript? try the function isnull( value). it returns a boolean whether the value is null or not.
SQL MID() Function
start, Required. Specifies the starting position (starts at 1). length, Optional. The number of characters to return. If omitted, the MID() function returns the rest of the
MySQL DATE_FORMAT() Function
Definition and Usage. The DATE_FORMAT() function is used to display date/time data in different formats. Syntax. DATE_FORMAT(date,format). Where date is a
SQL COUNT() Function
The COUNT(column_name) function returns the number of values (NULL values will not be counted) of the specified column: SELECT COUNT(column_name)
PHP Misc. Functions
The misc. functions were only placed here because none of the other categories seemed browscap, NULL, Name and location of browser-capabilities file (e.g.
JavaScript abs() Method
Type, Description. Number, The absolute value of the specified number, or NaN if the value is not a number, or 0 if the value is null
SQL NULL Values - IS NULL and IS NOT NULL
This chapter will explain the IS NULL and IS NOT NULL operators. the next chapter we will look at the ISNULL(), NVL(), IFNULL() and COALESCE() functions.
PHP Filter Functions
PHP: indicates the earliest version of PHP that supports the function. for "1", " true", "on" and "yes", FALSE for "0", "false", "off", "no", and "", NULL otherwise
PHP get_browser() Function
Default is the value of $HTTP_USER_AGENT. You can bypass this parameter with NULL. return_array, Optional. If this parameter is set to TRUE, the function
XML DOM - Node Types
A function, loadXMLDoc(), in an external JavaScript is used to load the XML file. Display nodeName and EntityReference, entity reference name, null. Element
XML DOM Parser Errors
Cross Browser Error Check. Here we have created an XML load function that checks for parser errors in both Internet Explorer and Firefox:
ADO BOF and EOF Properties
ADO BOF and EOF Properties. Recordset Object Reference Complete Recordset Object Reference. The BOF property returns True (-1) if the current record
ADO CreateParameter Method
adBSTR, 8, A null-terminated character string. adIDispatch, 9, A pointer adWChar, 130, A null-terminated Unicode character string. adNumeric, 131, An exact
XML DOM lastChild Property
If the selected node has no children, this property returns NULL. So, in the example below, we have a function that checks the node type of the last child node.
XPath Operators
XPath HOME XPath Intro XPath Nodes XPath Syntax XPath Axes XPath Operators XPath Examples XPath Summary. XPath Reference. XPath Functions
XML DOM - Document object
with the given value. If no such element exists, it returns null, 5, 1, 9, Yes. getElementsByTagName(), Returns a NodeList of all elements with a specified name
HTML URL Encoding Reference
In JavaScript, PHP, and ASP there are functions that can be used to URL encode a string. In JavaScript Click the "URL Encode" button to see how the JavaScript function encodes the text. Note: The .... NUL, null character, %00. SOH, start of
onfocus Event
Syntax. In HTML: <element onfocus="SomeJavaScriptCode">. In JavaScript: object.onfocus=function(){SomeJavaScriptCode}
XML DOM nextSibling Property
If there is no such node, this property returns null. So, in the example below, we have a function that checks the node type of the next sibling node. Element
JavaScript Boolean Object
If the Boolean object has no initial value, or if the passed value is one of the following: 0; -0; null; ""; false; undefined; NaN. the object is set to false. For any other
XML DOM removeChild() Method
Definition and Usage. The removeChild() method removes a child node. This function returns the removed node on success, or NULL on failure.
DOM - Node object
5, EntityReference, entity reference name, null. 6, Entity, entity 10, DocumentType, doctype name, null. 11, DocumentFragment, #document fragment, null