Methods of handling errors and rejections in HTML5 geolocation
In this article, the editor introduces in detail "HTML5 geolocation handling errors and rejection methods". The content is detailed, the steps are clear, and the details are handled properly. I hope this article "HTML5 geolocation handling errors and rejection methods" can help you solve your doubts.
Handle errors and rejections
The second parameter of the getCurrentPosition () method is used to handle errors. It specifies the function to run when it fails to get the user's location:
Example
Function showError (error)
{
Switch (error.code)
{
Case error.PERMISSION_DENIED:
X [XSS _ clean] = "the user rejects the request for geolocation."
Break
Case error.POSITION_UNAVAILABLE:
X [XSS _ clean] = "location information is not available."
Break
Case error.TIMEOUT:
X [XSS _ clean] = "request user geolocation timed out."
Break
Case error.UNKNOWN_ERROR:
X [XSS _ clean] = "unknown error."
Break
}
}
Error code:
Geolocation is not allowed for Permissiondenied- users
Positionunavailable- cannot get the current location
Timeout- operation timed out
Display the results in the map
To display the results in a map, you need to access mapping services that use latitude and longitude, such as Google Maps or Baidu Maps:
Example
Function showPosition (position)
{
Var latlon=position.coords.latitude+ "," + position.coords.longitude
Var img_url= "http://maps.googleapis.com/maps/api/staticmap?center="
+ latlon+ "& zoom=14&size=400x300&sensor=false"
Document.getElementById ("mapholder") [xss_clean] = "
"
}
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