JavaScript's double not operatoris basically double use of (!) operator. This is alogical not operator. (!!) operator converts non-Boolean to Boolean. As you know,!operator reverses the logic, i.e., it returnfalsefor!truevalue andtruefor!false. Examples of (!) Operator !false Output: ...
In the other cases, we’ll have errors.A general rule of thumb is to always define functions, variables, objects and classes before using them, to avoid surprises.Suppose we have a function:function bark() { alert('wof!') }Due to hoisting, we can technically invoke bark() before it ...
There are lots of different type conversions described in the spec. One of them isToInteger. JavaScript uses it when a standard function expects an integer argument. Before the use of the passed argument, JavaScript appliesToIntegerto the value of that argument. If the value is NaN, thenToIn...
[Help] Get the target path of shortcut (.lnk) [IndexOutOfRangeException: There is no row at position 0.] i find this error.. plz help me.. [IO] How to - Delete a file, keeping data in the stream? [Out Of Memory Error] while handling 400MB XML file [Solved] C# write to fil...
Validate Email Address in JavaScript Apart from developing websites, JavaScript is also used for validating email addresses. This is a very important step while validating an HTML form. In this post, we will discuss the process of email ... ...
var f=parseFloat(x);if(isNaN(f)) {returnfalse; } var f= Math.round(x*100)/100; var s=f.toString(); var rs= s.indexOf('.');if(rs < 0) { rs = s.length; s += '.'; }while(s.length <= rs + 2) { s += '0'; }returns; ...
It is specified within a function and that function takes an event as its parameter.preventDefault()does not accept any parameter. Opposite of preventDefault() But what if we want to revert this method, that is, we want the default action to occur when the event is triggered. For this...
Core.dll but was not handled in user code An exception of type 'System.IndexOutOfRangeException' occurred in System.Data.dll but was not handled in user code Additional information: There is no row at position 0. An exception of type 'System.InvalidOperationException' occurred in Entity...
ASP.NET MVC 4 is a framework for building scalable, standards-based web applications using well-established design patterns and the power of the ASP.NET and...
Using Javascript’s void(0), you can show a page won’t refresh or load when a link is clicked. We can use the operand 0 in two ways that are void(0) or void 0. Both of these methods are the same. The JavaScript function:void(0) tells the browser not to do anything, i.e.,...