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'''Modernizr''' is a [[JavaScript]] [[library (computer science)|library]] that detects the features available in a user's [[web browser|browser]]. This lets web pages avoid unsupported features by informing the user their browser is not supported or loading a [[Polyfill (programming)|polyfill]]. Modernizr aims to provide [[Feature detection (web development)|feature detection]] in a consistent and easy to use manner that discourages the use of failure-prone [[browser sniffing]].<ref>{{cite web | url=https://modernizr.com/docs/#what-is-modernizr | title=What is Modernizr | accessdate=25 December 2019}}</ref>
'''Modernizr''' is a [[JavaScript]] [[library (computer science)|library]] that detects the features available in a user's [[web browser|browser]]. This lets web pages avoid unsupported features by informing the user their browser isn't supported or loading a [[Polyfill (programming)|polyfill]]. Modernizr aims to provide [[Feature detection (web development)|feature detection]] in a consistent and easy to use manner that discourages the use of failure-prone [[browser sniffing]].<ref>{{cite web | url=https://modernizr.com/docs/#what-is-modernizr | title=What is Modernizr | accessdate=25 December 2019}}</ref>


==Overview==
==Overview==
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Modernizr offers tests for more than 250 features, then creates a [[JavaScript]] object (named "Modernizr") that contains the results of these tests as [[Boolean data type|boolean]] properties. It also adds classes to the [[HTML]] element based on what features are and are not natively supported.
Modernizr offers tests for more than 250 features, then creates a [[JavaScript]] object (named "Modernizr") that contains the results of these tests as [[Boolean data type|boolean]] properties. It also adds classes to the [[HTML]] element based on what features are and are not natively supported.


To perform feature detection tests, Modernizr often creates an element, sets a specific style instruction on that element and then immediately tries to retrieve that setting. [[Web browser]]s that understand the instruction will return something sensible; browsers that do not understand it will return nothing or "undefined". Modernizr uses the result to assess whether that feature is supported by the web browser.{{citation needed|date=October 2019}}
To perform feature detection tests, Modernizr often creates an element, sets a specific style instruction on that element and then immediately tries to retrieve that setting. [[Web browser]]s that understand the instruction will return something sensible; browsers that don't understand it will return nothing or "undefined". Modernizr uses the result to assess whether that feature is supported by the web browser.{{citation needed|date=October 2019}}


Many tests in the documentation come with a small code sample to illustrate how a specific test can be used in web development [[workflow]].
Many tests in the documentation come with a small code sample to illustrate how a specific test can be used in web development [[workflow]].
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Greek: Ά ά Έ έ Ή ή Ί ί Ό ό Ύ ύ Ώ ώ   Α α Β β Γ γ Δ δ   Ε ε Ζ ζ Η η Θ θ   Ι ι Κ κ Λ λ Μ μ   Ν ν Ξ ξ Ο ο Π π   Ρ ρ Σ σ ς Τ τ Υ υ   Φ φ Χ χ Ψ ψ Ω ω   {{Polytonic|}}
Cyrillic: А а Б б В в Г г   Ґ ґ Ѓ ѓ Д д Ђ ђ   Е е Ё ё Є є Ж ж   З з Ѕ ѕ И и І і   Ї ї Й й Ј ј К к   Ќ ќ Л л Љ љ М м   Н н Њ њ О о П п   Р р С с Т т Ћ ћ   У у Ў ў Ф ф Х х   Ц ц Ч ч Џ џ Ш ш   Щ щ Ъ ъ Ы ы Ь ь   Э э Ю ю Я я   ́
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Wikidata entities used in this page

  • Modernizr: Sitelink, Title, Statement: P1324, Statement: P856, Statement: P408, Description: en, Miscellaneous (e.g. aliases, entity existence)

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