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How can I bind to the change event of a textarea in jQuery?
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Try this actually:
$('#textareaID').bind('input propertychange', function() {
$("#yourBtnID").hide();
if(this.value.length){
$("#yourBtnID").show();
}
});
DEMO
That works for any changes you make, typing, cutting, pasting.
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How can I see the raw SQL queries Django is running?
...ilter(name="my name").query)
Note that the output of the query is not valid SQL, because:
"Django never actually interpolates the parameters: it sends the query and the parameters separately to the database adapter, which performs the appropriate operations."
From Django bug report #17741.
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Why no ICloneable?
... that, your expectation is not the only possible idea people may have when calling or implementing Clone. What if library authors implementing some other list do not follow your expectation? The API should be trivially unambiguous, not arguably unambiguous.
– Andrey Shchekin
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How to stop unwanted UIButton animation on title change?
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It works for system buttons if you call [button layoutIfNeeded]; inside the block.
– Alexandre Blin
Mar 3 '15 at 8:10
1
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How to convert a number to string and vice versa in C++
...ter representation of the value of its argument that would be generated by calling sprintf(buf, fmt, val) with a format specifier of "%d", "%u", "%ld", "%lu", "%lld", "%llu", "%f", "%f", or "%Lf", respectively, where buf designates an internal character buffer of sufficient size." I had a look at th...
Set a path variable with spaces in the path in a Windows .cmd file or batch file
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this should be the accepted answer. for some reason, calling set from an if block doesn't work if the value has a space and is unquoted.
– Kevin
Aug 1 '19 at 16:35
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How to check if element has any children in Javascript?
Simple question, I have an element which I am grabbing via .getElementById () . How do I check if it has any children?
8 A...
Explanation of strong and weak storage in iOS5
... I have read the documentation and other SO questions, but they all sound identical to me with no further insight.
6 Answe...
初窥InnoDB的Memcached插件 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
... flags: c3
cas_column: c4
expire_time_column: c5
unique_idx_name_on_key: PRIMARY
如上已经有了test数据库的demo_test表，通过c1查询c2的值，表结构如下所示：
mysql> DESC test.demo_test;
+-------+---------------------+------+-----+---------+-------+
| Fi...
How do I get the last four characters from a string in C#?
... return source.Substring(source.Length - tail_length);
}
}
And then call:
string mystring = "34234234d124";
string res = mystring.GetLast(4);
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