Dan Wahlin's WebLog - All Comments

Windows Dev News for February 12, 2012 - #0039

Community Blogs — Mon, 13 Feb 2012 01:56:50 GMT

[SC1215] In This Issue: Michael Washington ( -2- ), Kevin Dockx ( -2- ), Sumit Dutta , Dhananjay Kumar

2012??? 2??? 10??? it ?????? ?????? |

2012??? 2??? 10??? it ?????? ?????? | — Fri, 10 Feb 2012 00:57:32 GMT

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Dew Drop – February 9, 2012 (#1,262) | Alvin Ashcraft's Morning Dew

Dew Drop – February 9, 2012 (#1,262) | Alvin Ashcraft's Morning Dew — Thu, 09 Feb 2012 13:38:19 GMT

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JQuery Tip #1 ??? Defining a Context When Using... | ASP.NET | Syngu

JQuery Tip #1 ??? Defining a Context When Using... | ASP.NET | Syngu — Thu, 09 Feb 2012 06:44:34 GMT

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Windows Dev News for February 08 - #0038

Community Blogs — Thu, 09 Feb 2012 05:54:36 GMT

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re: jQuery Tip #1 – Defining a Context When Using Selectors

dwahlin — Thu, 09 Feb 2012 00:53:19 GMT

SGWellens: I've seen that more and more as well. I haven't converted over to it but it definitely makes it nice to pick out jQuery wrapped objects vs. raw JavaScript or DOM objects. I may convert over to that one of these days. :-)

Dan

re: jQuery Tip #1 – Defining a Context When Using Selectors

SGWellens — Thu, 09 Feb 2012 00:00:46 GMT

I don't know how prevalent this convention is but I find it useful and I do see it a lot: jQuery variables should start with a $ to denote they are jQuery collections:

var $emailDiv = $('#emailContainer');

re: jQuery Tip #1 – Defining a Context When Using Selectors

Sam Stephens — Wed, 08 Feb 2012 22:43:50 GMT

I hadn't seen the context syntax before.

Personally I think the .find() syntax is more readable - it reads nicely from left to right. element.find(selector); is take an element, and find any elements it contains that match selector.

re: jQuery Tip #1 – Defining a Context When Using Selectors

dwahlin — Wed, 08 Feb 2012 17:25:08 GMT

John,

Thanks for taking a look. :-) For the last one, I'd just use a standard selector since you have two strings going there rather than a string and an existing jQuery/DOM object. The following would work:

panels = $('#emailContainer .panel');

Dan

re: jQuery Tip #1 – Defining a Context When Using Selectors

John Papa — Wed, 08 Feb 2012 16:58:17 GMT

Dan,

Nice series! I typed a few examples up that you mentioned ... but what are your thoughts on the last one below?

var emailDiv = $('#emailContainer');

console.log(emailDiv);

var panels = $('div.panel', emailDiv);

console.log(panels);

panels = $('.panel', emailDiv);

console.log(panels);

// what about this?

panels = $('.panel', '#emailContainer');

console.log(panels);