有人能告诉我为什么在下面的代码的第5行使用数组索引吗? #agree 指的是一个复选框, # terms 是指一个文本框。 目的是确定用户是否在单击复选框之前滚动到文本框底部。 谢谢 。
$(document).ready(function() {
$( #agree ).attr( disabled , disabled );
$( #terms ).scroll(function() {
var textarea_height = $(this)[0].scrollHeight;
var scroll_height = textarea_height - $(this).innerHeight();
var scroll_top = $(this).scrollTop();
if (scroll_top == scroll_height){
$( #agree ).removeAttr( disabled );
}
});
});
s 因为 crollH8 是DOM元素属性。
所以 $( this) 是一个jQuery 对象, $(this) [0] 是一个DOM- 元素(您也可以使用 .get(0) 而不是 [0] )
this.scrollH8 - 这应与 $(this)[0].scrollH8 相同
Okay, I ll bite. I ve got really pleasant code/window colors set up in Xcode. Ordinarily, my selection color is very visible. When I am doing a project search and iterating through the results, ...
Can someone help me to see what is going wrong with this setup I build the @sql query in the function below like this. The extra quotes are setup in the conditions array. $sql .= " WHERE $...
I have a Patient table: PatientId Admitted --------- --------------- 1 d/m/yy hh:mm:ss 2 d/m/yy hh:mm:ss 3 d/m/yy hh:mm:ss I have a PatientMeasurement table (0 to ...
What is the XSD syntax, given <xs:element name="PhoneNumber" type="xs:string" ...? > , to specify the following format for a phone number: 12 characters and area code is digits. example of ...
Original: $sql = "SELECT DATE(TimeAdded) AS Date, $column_name FROM Codes ORDER BY TimeAdded ASC"; Altered: $sql = "SELECT DATE("m", TimeAdded ) AS Date, ColumnName FROM TableName ORDER BY ...
Is there a way to have named arguments like in perl/python for example object.method(arg1 => value1, arg2 => value2, arg3 => 0); in C# prior to C# 4.0?
I am not a fan of the following construction if (self = [super init]) { //do something with self assuming it has been created } Is the following equivalent? self = [super init]; if (self != ...
Post an example to execute a "C" statement without semicolon( ; )