大约有 15,600 项符合查询结果（耗时：0.0453秒） [XML]
JavaScript “new Array(n)” and “Array.prototype.map” weirdness
...native object in JavaScript, it returns undefined (rather than throwing an error, as happens when you try to refer to a non-existent variable), which is the same as what you get if the property has previously been explictly set to undefined.
...
How to trigger event in JavaScript?
...eType 9 = DOCUMENT_NODE
doc = node;
} else {
throw new Error("Invalid node passed to fireEvent: " + node.id);
}
if (node.dispatchEvent) {
// Gecko-style approach (now the standard) takes more work
var eventClass = "";
// Different events have dif...
How do I use PHP namespaces with autoload?
I get this error when I try to use autoload and namespaces:
13 Answers
13
...
Django REST Framework: adding additional field to ModelSerializer
...e field you want to add. No need for @property and source='field' raise an error.
class Foo(models.Model):
. . .
def foo(self):
return 'stuff'
. . .
class FooSerializer(ModelSerializer):
foo = serializers.ReadOnlyField()
class Meta:
model = Foo
fields =...
Convert a character digit to the corresponding integer in C
...r other replies, this is fine:
char c = '5';
int x = c - '0';
Also, for error checking, you may wish to check isdigit(c) is true first. Note that you cannot completely portably do the same for letters, for example:
char c = 'b';
int x = c - 'a'; // x is now not necessarily 1
The standard guara...
How do you roll back (reset) a Git repository to a particular commit? [duplicate]
...t-id>, ( 2 back ) when doing "git push -f origin master" I get "remote: error: denying non-fast-forward refs/heads/master (you should pull first)" it is my repo and I want to take it back :)
– peterk
Mar 21 '12 at 19:25
...
How do I remove the first characters of a specific column in a table?
...umn, LEN(MyColumn) - 4) WHERE LEN(MyColumn) > 4 The SUBSTRING wouldn't error out, but it would also unnecessarily "update" rows with fewer than four characters. That said, the OP indicated that they wanted to trim the first 4 characters of a specific column - I would assume unless provided with...
Strtotime() doesn't work with dd/mm/YYYY format
...
We can implement that as they won't give error but when I checked $t and $t1 are showing different result. I checked like this. $t=strtotime(date('d-m-Y')); and $t1=strtotime(date('m/d/Y'));
– vusan
Oct 10 '12 at 9:03
...
jQuery convert line breaks to br (nl2br equivalent)
...
if you get the error "x.replace is not a function" then use x.toString().replace
– Vörös Amadea
Aug 15 '19 at 12:18
...
How can I see the raw SQL queries Django is running?
...s especially useful when you have a query that's failing with a SQL syntax error; it will display the last query that attempted to run (and failed), making it easier to debug.
– scoopseven
Aug 16 '12 at 17:20
...