JavaScript Which is more efficient? (Variables for JavaScript loop) what more efficient ac or dc,what's more

This one will be faster, you will cache Something.length in variable so it will not be interpreted during loop:

for(var i=0, len = Something.length; i<len; i++) foo();

Here is a test

But moving var definition from loop will be really a bit faster without caching

Answer:1

I have a Hyperlink where I am Calling a function Openlink which is a follows function OpenLink() { window.open("http://192.168.1.21/Sample/download.asp?Filename=Sample.html&Filepath=E:\Sample\...

I have a Hyperlink where I am Calling a function Openlink which is a follows function OpenLink() { window.open("http://192.168.1.21/Sample/download.asp?Filename=Sample.html&Filepath=E:\Sample\...

I'm testing the SignalR(1.1.0) Chat sample under IIS 7.5. I'm, trying to connect from a diferent webapp to my SignalR webapp(cross-domain). I have made the cross-domain configuration at my web....

I'm testing the SignalR(1.1.0) Chat sample under IIS 7.5. I'm, trying to connect from a diferent webapp to my SignalR webapp(cross-domain). I have made the cross-domain configuration at my web....

Some jQuery animation methods take an argument described as complete, which is a function that is to be called once the animation is done. For example: $(obj).slideUp(duration, easing, complete()); ...

Some jQuery animation methods take an argument described as complete, which is a function that is to be called once the animation is done. For example: $(obj).slideUp(duration, easing, complete()); ...

What I'm asking is how to implement the equivalent functionality of jQuery's children() with HTML5's querySelector/querySelectorAll, i.e. how do I designate the current element in the selector pattern....

What I'm asking is how to implement the equivalent functionality of jQuery's children() with HTML5's querySelector/querySelectorAll, i.e. how do I designate the current element in the selector pattern....