CSS HTML Validator Help

Version 2025/v25

Opera Bug

Contents | Index

• About CSS HTML Validator
  • Buying Information
  • Supported Languages
• Getting Started
  • Support & What's New
  • Things to Know
  • Tips
  • Using the Batch Wizard
  • Validating Local Files
• Batch Wizard
  • Batch Wizard Options
    • Export/Import Options
    • Limits
    • Miscellaneous
    • Report Options
      • File Options
      • Link Report
      • Report Format
      • Include Reports
    • Tool to Use
    • When Done
    • When Running
    • Advanced Options
      • XML Output
  • Custom Report Footer
  • Tabs
    • Target List Tab
    • Target List Options Tab
    • Exclusions Tab
    • Advanced Tab
    • Batch Progress
  • Target List File Format
    • Old Formats
  • Target Properties
    • Folder Specific
    • Follow Links
    • General
    • Limit to Age
    • URL Specific
  • Tips
  • Troubleshooting
  • Using the Batch Wizard
  • Ways to Speed Up
• Editor
  • Drag and Drop Default Tool Select Dialog Box
  • Editor Options
    • Clipboard
    • Editor
      • Document Tabs
      • Fonts and Colors
      • HTML/Autotype
      • Line Highlighting
      • Other Editor
      • Spell Checking
    • Files
      • File Options
      • File Types
    • Link Checking
    • Miscellaneous
    • Results Window
    • Startup
    • Style / Theme
    • Updates
    • Web Browser
  • Find/Replace Dialog Boxes
  • Integrated Web Browser
  • Open Documents Window
  • Other Editor Information
  • Results Window
    • Links Tab
  • Selected Text Processing
• How to...
  • Add Words to the Dictionary
  • Add/Edit New Document Templates
  • Backup & Restore
  • Change Validation Sounds
  • Check Documents, URLs, and More
    • Validate Using the Integrated Web Browser
    • Validate to W3C Standards
    • Validate Documents that use Server Side Scripting
    • Validate an Entire Website
    • Validate a URL
    • Validate a Document
    • Check Links or E-mail Addresses
  • Configure the Text Inserters
  • Export Links from a Document
  • Filter/Disable Validator Messages
  • Ignore CSS Properties
  • Ignore Parts of a Document
  • Improve Search Engine Rankings
  • Open a Document
  • Pretty Print and Fix Automatically
  • Print, Export, or Email a Validation Report
  • Schedule Validations or Link Checks
  • Transfer or Move License
  • Uninstall CSS HTML Validator
  • Use the Text Inserters
• Tools
  • HTML Tidy
    • Editing HTML Tidy Profiles
  • Template
• Validator Engine
  • Configuration Editor
    • Tag Names Editor
    • Programs Editor
    • Attributes Editor
    • Attribute Groups Editor
    • Attribute Values Editor
    • Categories Editor
    • Character Entities Editor
    • Notes Editor
    • General Information
  • Validator Engine Options
    • Validator Engine
      • Accessibility
        • Section 508
        • WCAG
          • About WCAG 1.0 Accessibility
          • About WCAG 2.0/2.1/2.2 Accessibility
      • Attribute Options
      • Canada CLF
      • Char References
      • Classic
      • Config Files
      • CSS Checker
        • CSS Checker Flags
      • DOCTYPE Control
      • Flags
      • JSON Checker
      • Message Output
        • Message Filters
      • Miscellaneous
      • Mobile Messages
      • Search Engine
      • Security Messages
      • Spell Checking
      • Tag Options
    • Export/Import Options
    • HTML Tidy
    • HTTP Proxy
    • JavaScript
      • JavaScript Lint
      • JSHint
      • JSLint
    • Link Checking
      • Link Filters
      • Path Mapping
      • More Options
    • Logging
    • Nsgmls
    • PHP Checker
    • Sound
    • Tools
  • XML Output Example
• TNPL Scripting
  • Basic Language Syntax
    • Comments
    • Data Types & Operators
    • Flow Control
    • Functions (Defining)
    • Variables & Assignments
  • Batch Wizard Only
    • $_BatchWizard array 
    • $_JOB array
      • XML Message Format Variables
    • Function (Events - Batch Wizard) 
      • onBeforeMainStart()
      • onBeforeReportOpen()
      • onCookieReceived()
      • onCookieSending()
      • onFinishedMainProcessing()
      • onFunctionsLoad()
      • onGetReportFilename()
      • onLinkCanLinkCheck()
      • onLinkReportAdding()
      • onProcessingComplete()
      • onReportFooterLoaded()
      • onReportPrepare()
      • onTargetAdd()
      • onTargetCanAdd()
      • onTargetExpandFolder()
      • onTargetProcessed()
    • Functions (Batch Wizard Only)
      • addTarget()
      • getEngineVar()
      • ProgressMessage()
    • String Keywords
  • Examples
    • Example 'User Functions' File
    • Speeding Up the Batch Wizard
  • Function (Events) Reference
    • onAttributeID_(id)()
    • onAttributeIgnore_Colon()
    • onAttributeQuotedMessage()
    • onAttributeValueID_(id)()
    • onCDATA_HTML()
    • onCommentHTML()
    • onCommentHTML_CHV()
    • onConfigLoad[2]()
    • onCSSEnd[ed|ing]Validation()
    • onCSSInvalidValueMessage()
    • onDocTypeFlagsChange()
    • onEnd[ed|ing]Validation()
    • onEndTag_(tagname)()
    • onEndTagImpliedFromDocEnd()
    • onEndTagImpliedFromEndTag()
    • onEndTagImpliedFromStartTag()
    • onEndTagPre_(tagname)()
    • onEndTagUnknownCustomElement()
    • onInactiveAttributeMessage()
    • onInactiveElementMessage()
    • onInvalidAttValueMessage()
    • onKeywordDensityStart()
    • onKeywordDensityWord()
    • onLinkChecked_HTTP()
    • onMessageAdded()
    • onMessageAdding()
    • onMessageID_(msgid)()
    • onMisspelledWord()
    • onRepeatedWord()
    • onStartTag_(tagname)()
    • onStartTagCantUseHere()
    • onStartTagFirst()
    • onStartTagImpliedFromEndTag()
    • onStartTagImpliedFromStartTag()
    • onStartTagPre_(tagname)()
    • onStartValidation()
    • onTextHTML()
    • onTool_QuoteAttVal_Value()
    • onUnknownAttribute_SB()
    • onUnknownAttribute_hx() 
    • onUnknownAttribute_sse()
    • onUnknownAttribute_ws()
    • onUnknownAttributeMessage()
    • onUnknownCSSPropertyMessage()
    • onUnknownCustomElement()
    • onUnknownElement_amp()
    • onUnknownElementMessage()
    • onXMLPI_HTML()
  • Function Reference
    • Array
      • checkArray()
      • checkArrayKeys()
      • dissect()
      • getHTTPHeaderValue()
    • Boolean
      • hasAtt[ForStartTag]()
      • hasAttWithStringValue()
      • hasChildElement()
      • hasCSSProperty()
      • hasDescendentElement()
      • hasEqual()
      • hasHTTPHeader()
      • hasSiblingElement()
      • isAttValueEmpty()
      • isCatActive()
      • isChildOf()
      • isDescendentOf()
      • isFlagSet()
      • isNChildTag()
    • File
      • deleteFile()
      • existsFile()
      • existsFolder()
      • getFileInfo()
      • readFile()
      • writeFile()
    • Float
      • getValueFloat()
      • toFloat()
    • Integer
      • getAttIndex[ForStartTag]()
      • getNumAncestorElements()
      • getNumAttributes()
      • getNumChildElements()
      • getValueInt()
      • matchNumber()
      • random()
      • toInt()
    • Location
      • getAttLocation[ForStartTag]()
      • getAttValueLocation[ForStartTag]()
      • getLocation()
    • Obsolete
      • setClosed()
    • Other
      • checkVersion()
      • clearCookies()
      • date()
      • eval()
      • playSound()
      • setPriority()
      • ShellExecute()
      • sleep()
      • time()
    • String
      • beginsWith[No]Case()
      • checkString()
      • checkStringEx()
      • convertString[Ex]()
      • encodeUrl()/decodeUrl()
      • endsWith[No]Case()
      • getAttName()
      • getAttValue[ForStartTag]()
      • getAttValueEx()
      • getCurrentNodePath()
      • getHashString()
      • getMessageCategory()
      • getMidString()
      • getSourceLine()
      • getStringBetween()
      • getTagName()
      • getValueString()
      • htmlspecialchars()
      • isInRangeEx()
      • json_decode()
      • json_encode()
      • match[No]Case()
      • matchRegEx()
      • pluralize()
      • replaceRegEx()
      • replaceString[No]Case()
      • str[i]pos()
      • str[ni]cmp()
      • strlen()
      • toLower()
      • toString[F]()
      • toUpper()
      • trim(), ltrim(), rtrim()
    • Validation
      • abortValidation()
      • activateCategory[ies]()
      • addLink()
      • checkAttributes()
      • checkAttributeValue()
      • checkDocument()
      • checkJSON()
      • checkRange[Ex]()
      • checkStyle()
      • checkTagAttributes()
      • checkTag()
      • checkTagContents()
      • checkTagLocation()
      • checkTagUsed()
      • clearMessages()
      • endCurrentElement()
      • Message()
      • MessageEx()
      • push|popActiveCategories()
      • requireAllAttributes()
      • requireMutuallyExclusiveAttributes()
      • requireOneAttribute()
      • resetLinkCache()
      • runLinkCheckProgramForTags()
      • runProgram()
      • setFlag()
      • setFlagEx()
      • setTagProperty()
      • setValidated()
      • setValueInt()
      • setValueString[Ex]()
      • spellCheckOp()
    • Variable
      • addValue()
      • array()
      • array_search()
      • has[No]Value()
      • isDefined()
      • isSet[Any]()
      • isValueInArray()
      • setInt()
      • unDefine()
      • unset()
  • Keywords
    • Integer (Global)
    • Integer (Validator Engine)
    • Other (Validator Engine)
    • String (Validator Engine)
• Reference
  • Accessibility Tips
  • Character Encodings
  • Command Line Arguments
    • Batch Wizard & Multiple Jobs
    • Batch Wizard Commands
    • Editor Command Line Arguments
    • PowerShell Example
    • Sample Output (JSON)
    • Sample Output for -e (normal)
    • User Account Information
    • Using -f to Execute Commands
  • Configuration File
    • Categories
    • Flag Descriptions
  • External Links
  • Filter/Disable Validator Messages
  • Format Picture Strings
  • Installing and Uninstalling
  • Integration with Other Software
  • Keyboard Shortcuts
  • License & FAQs
  • Message Types
  • Program Limitations
  • Search Engine Optimization Tips
  • Spell Checking
  • Update Checking
  • Validation Modes
  • Warranty

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