Angular $q .catch() method fails in IE8
You need to use bracket notation:
promise.then(function(response) { // success})["catch"](function(response) { // error});
This is because IE8 implements ECMAScript 3 that does not allow bare keywords in dot notation. Modern browsers implement ECMAScript 5 that allows it.
A lot of libraries alias .catch
with another keyword. However, the way Angular promises are built it is not simple to extend $q
promises. So ["catch"]
would have to do. Note this is also true for finally
.
Yes, IE8 thinks it's a keyword. You can get around this a couple of ways:
promise.then(function() { })['catch'](function() { });
promise.then(function() { /* success handler */ })).then(null, function() { /* error handler */ });
- Or combine success and error into one
then
statement, if such a thing is appropriate:promise.then(function() { /* success handler here */ }, function() { /* error handler here */ });
catch
is shorthand for #2.
http://docs.angularjs.org/api/ng/service/$q#the-promise-api
Because finally is a reserved word in JavaScript and reserved keywords are not supported as property names by ES3, you'll need to invoke the method like promise'finally' to make your code IE8 and Android 2.x compatible.
Same for catch.