How do I update the returnHtml variable from within the anonymous success function?
function getPrice(productId, storeId) {
var returnHtml = '';
jQuery.ajax({
url: "/includes/unit.jsp?" + params,
cache: false,
dataType: "html",
success: function(html){
returnHtml = html;
}
});
return returnHtml;
}
Answer:
That's the wrong approach. The first A in AJAX is Asynchronous. That function returns before the AJAX call returns (or at least it can). So this isn't an issue of scope. It's an issue of ordering. There are only two options:
Make the AJAX call synchronous (not recommended) with the async: false option (default is true); or
Change your way of thinking. Instead of returning HTML from the function you...
Thứ Năm, 10 tháng 8, 2017
IQueryable vs IEnumerable
This is a nice video on my Facebook page which demonstrates how these interfaces differ , worth a watch.
Below goes a long descriptive answer for it.
The first important point to remember is IQueryable interface inherits from IEnumerable, so whatever IEnumerable can do, IQueryable can also do.
There are many differences but let us discuss about the one big difference which makes the biggest difference. IEnumerable interface is useful when your collection is loaded using LINQ or Entity framework and you want to apply filter on the collection.
Consider the below simple code which uses IEnumerable with entity framework....
Chủ Nhật, 6 tháng 8, 2017
What is SET NOCOUNT ON?
When SET NOCOUNT is ON, the count (indicating the number of rows affected by a Transact-SQL statement) is not returned. When SET NOCOUNT is OFF, the count is returned. It is used with any SELECT, INSERT, UPDATE, DELETE statement.
The setting of SET NOCOUNT is set at execute or run time and not at parse time.
SET NOCOUNT ON improves stored procedure (SP) performance.
Syntax: SET NOCOUNT { ON | OFF }
Example of SET NOCOUNT ON:
Example of SET NOCOUNT OFF:...
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