Element

object

Error Type

Potential

Guidelines

  • BITV 1.0 (Level 2)
    Guideline GroupLevel 1
    Guideline Subgroup7.1 Until user agents allow users to control flickering, avoid causing the screen to flicker.
  • Section 508
    Guideline GroupJ - avoid flicker
  • Stanca Act
    Guideline GroupRequirement 5: Flicker
  • WCAG 1.0 (Level A)
    Guideline GroupPriority 1
    Guideline Subgroup7.1 Until user agents allow users to control flickering, avoid causing the screen to flicker.
  • WCAG 1.0 (Level AA)
    Guideline GroupPriority 1
    Guideline Subgroup7.1 Until user agents allow users to control flickering, avoid causing the screen to flicker.
  • WCAG 1.0 (Level AAA)
    Guideline GroupPriority 1
    Guideline Subgroup7.1 Until user agents allow users to control flickering, avoid causing the screen to flicker.
  • WCAG 2.0 (Level A)
    Guideline Group2.3 Seizures: Do not design content in a way that is known to cause seizures.
    Guideline SubgroupSuccess Criteria 2.3.1 Three Flashes or Below Threshold (A)
  • WCAG 2.0 (Level AA)
    Guideline Group2.3 Seizures: Do not design content in a way that is known to cause seizures.
    Guideline SubgroupSuccess Criteria 2.3.1 Three Flashes or Below Threshold (A)
  • WCAG 2.0 (Level AAA)
    Guideline Group2.3 Seizures: Do not design content in a way that is known to cause seizures.
    Guideline SubgroupSuccess Criteria 2.3.1 Three Flashes or Below Threshold (A)

Requirement

All objects do not flicker.

Error

object may flicker.

Short Description

This error is generated for all object elements.

How To Determine

Question Does this object flicker?
PASS object does not cause screen flicker.
FAIL object causes screen flicker.

Steps To Check

Procedure

1. View the operation of each object element in your document.
2. Determine if the object flickers using the general flash threshold and red flash threshold.

Expected Result

1. All objects do not flicker.

Failed Result

1. Remove the object or modify the object so it does not flicker.

Examples

Pass Examples

object does not flicker.
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
<meta http-equiv="Content-Type" content="text/xhtml; charset=UTF-8" />
<title>ATRC Testfile - Check #30.2 - Negative</title>
</head>
<body>
<p>There is not a real object here. I need an object that does not flicker.</p>
<object/>
</body>
</html>

Fail Examples

object flickers.
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
<meta http-equiv="Content-Type" content="text/xhtml; charset=UTF-8" />
<title>ATRC Testfile - Check #30.1 - Positive</title>
</head>
<body>
<p>There is not a real object here. I need an object that flickers.</p>
<object/>
</body>
</html>

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