Access-Control-Allow-Origin

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Written by: Stanko Milosev
Category: Chrome
Hits: 2585
In order to disable error:

Access to XMLHttpRequest at 'http://test:2021/api/GoogleMaps' from origin 'http://gallery.milosev.com:9090' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.

In Windows 10 first kill the chrome:

taskkill /F /IM chrome.exe

Start chrome like:

"C:\Program Files (x86)\Google\Chrome\Application\chrome.exe" --disable-web-security --disable-gpu --user-data-dir=~/chromeTemp --allow-file-access-from-file.

Path to a node

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Written by: Stanko Milosev
Category: Chrome
Hits: 3624
Since I like web scrapping, my latest project you can see here, always I need to find a path to a specific node. Chrome make it easy:

 

"ontouchstart" in document.documentElement Window 8 vs Window 7

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Written by: Stanko Milosev
Category: Chrome
Hits: 6478

If you try, in Google Chrome under Windows 8, to execute following statement:

if ("ontouchstart" in document.documentElement) {
  console.log("You can touch me")
} else {
  console.log("Cant touch this")
}

or as jsLint recommends:

if (document.documentElement.ontouchstart !== undefined) {
  console.log("You can touch me")
} else {
  console.log("Cant touch this")
}

(document.documentElement.ontouchstart is null if it exists, that is why we have to compare it with undefined, just don't use hasOwnProperty because it seems that it doesn't work on Android devices)

return value will be true, in Windows 7 return value is false

Few more things which you can test:

iOS (iphone/ipad) console:

typeof window.Touch
"object"

Windows 8 VM, Chrome Stable console:

typeof window.Touch
"function"

OSX, Chrome Stable, Safari latest, console:

typeof window.Touch
"undefined"

Taken from here.

In order to disable touch events on google chrome go to:

chrome://flags/

search for:

Enable touch events Mac, Windows, Linux, Chrome OS

Choose disable.