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Handle DOMParser exception #175

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merged 2 commits into from
Feb 3, 2013
Merged

Handle DOMParser exception #175

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b853169
Handle DOMParser exception
reed Jan 28, 2013
297f71f
Add explanation to browserCompatibleDocumentParser
reed Jan 29, 2013
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32 changes: 25 additions & 7 deletions lib/assets/javascripts/turbolinks.js.coffee
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Original file line number Diff line number Diff line change
Expand Up @@ -155,20 +155,38 @@ browserCompatibleDocumentParser = ->
createDocumentUsingParser = (html) ->
(new DOMParser).parseFromString html, 'text/html'

createDocumentUsingDOM = (html) ->
doc = document.implementation.createHTMLDocument ''
doc.documentElement.innerHTML = html
doc

createDocumentUsingWrite = (html) ->
doc = document.implementation.createHTMLDocument ''
doc.open 'replace'
doc.write html
doc.close()
doc

if window.DOMParser
testDoc = createDocumentUsingParser '<html><body><p>test'

if testDoc?.body?.childNodes.length is 1
createDocumentUsingParser
else
createDocumentUsingWrite
# Use createDocumentUsingParser if DOMParser is defined and natively
# supports 'text/html' parsing (Firefox 12+, IE 10)
#
# Use createDocumentUsingDOM if createDocumentUsingParser throws an exception
# due to unsupported type 'text/html' (Firefox < 12, Opera)
#
# Use createDocumentUsingWrite if:
# - DOMParser isn't defined
# - createDocumentUsingParser returns null due to unsupported type 'text/html' (Chrome, Safari)
# - createDocumentUsingDOM doesn't create a valid HTML document (safeguarding against potential edge cases)
try
if window.DOMParser
testDoc = createDocumentUsingParser '<html><body><p>test'
createDocumentUsingParser
catch e
testDoc = createDocumentUsingDOM '<html><body><p>test'
createDocumentUsingDOM
finally
unless testDoc?.body?.childNodes.length is 1
return createDocumentUsingWrite


installClickHandlerLast = (event) ->
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