Preview image inline before uploading.
I hope HTML5 and Google Gear could do this thing better
http://hedgerwow.appspot.com/image-upload-preview/demo.html
Keep It Simple, Stupid
I hope HTML5 and Google Gear could do this thing better
http://hedgerwow.appspot.com/image-upload-preview/demo.html
http://code.google.com/p/jot-project/wiki/SyntaxAndHowTos , still beta.
Hope you’d like it.
One day, I was trying to detect whether an element is an element that has no close tag.
So I did this:
var tagName = el.tagName.toLowerCase();
if( tagName == ‘img’ || tagName == ‘br’ || tagName == ‘input’ || tagName == ‘embed ‘ ){
// This is just a example, not all single tags are tested. These tags are :
// area,base,basefont,br,col,frame,hr,img,input,isindex,link,meta,param,embed.
// Do something here.
}
Well, this is not that efficient to write your program.
So I switch to use a string map, which is rather simple and John Resig uses the same trick in his HTML Parser.
var map = makeMap(’area,base,basefont,br,col,frame,hr,img,input,isindex,link,meta,param,embed’);
if( map[tagName]){
// Do something here.
}
Of course we can use RegExp to test it, just like many others did.
var reg = /^(area|base|basefont|br|col|frame|hr|img|input|isindex|link|meta|param|embed)$/i;
var tagName = ‘BR’;
if( reg.test(tagName)){
// Do something…
}
and maybe you can find more tricks that solve the same problem with low cost, but below is the most interesting one that caught my attention.
if ( tagName != “BUTTON” | “B” | “A” ){
// Do something…
}
Wait, this seems really strange to me and seems not to perform as what I was expecting.
However, since I found this code snippets from MSDN, there must be something magic which makes this working.
Unfortunately, this is simply not working though I almost thought I found a new JS pattern from MSDN and was very excited about it for just about 10 seconds.
It’s fun to learn JS from microsoft.
Adapted from tylesheet-debug.js…../*Copyright (c) 2009, Yahoo! Inc. All rights reserved. Code licensed under the BSD License: http://developer.yahoo.net/yui/license.txt version: 2.7.0*/
* Style node must be added to the head element. Safari does not honor styles applied to StyleSheet objects on style nodes in the body. * StyleSheet object is created on the style node when the style node is added to the head element in Firefox 2 (and maybe 3?) * The cssRules collection is replaced after insertRule/deleteRule calls in Safari 3.1. Existing Rules are used in the new collection, so the collection cannot be cached, but the rules can be. * Opera requires that the index be passed with insertRule. * Same-domain restrictions prevent modifying StyleSheet objects attached to link elements with remote href (or “about:blank” or “javascript:false”) * Same-domain restrictions prevent reading StyleSheet cssRules/rules collection of link elements with remote href (or “about:blank” or “javascript:false”) * Same-domain restrictions result in Safari not populating node.sheet property for link elements with remote href (et.al) * IE names StyleSheet related properties and methods differently (see code) * IE converts tag names to upper case in the Rule’s selectorText * IE converts empty string assignment to complex properties to value settings for all child properties. E.g. style.background = ‘’ sets non-'’ values on style.backgroundPosition, style.backgroundColor, etc. All else clear style.background and all child properties. * IE assignment style.filter = ‘’ will result in style.cssText == ‘FILTER:’ * All browsers support Rule.style.cssText as a read/write property, leaving only opacity needing to be accounted for. * Benchmarks of style.property = value vs style.cssText += ‘property: value’ indicate cssText is slightly slower for single property assignment. For multiple property assignment, cssText speed stays relatively the same where style.property speed decreases linearly by the number of properties set. Exception being Opera 9.27, where style.property is always faster than style.cssText. * Opera 9.5b throws a syntax error when assigning cssText with a syntax error. * Opera 9.5 doesn’t honor rule.style.cssText = ‘’. Previous style persists. You have to remove the rule altogether. * Stylesheet properties set with !important will trump inline style set on an element or in el.style.property. * Creating a worker style collection like document.createElement(’p').style; will fail after a time in FF (~5secs of inactivity). Property assignments will not alter the property or cssText. It may be the generated node is garbage collected and the style collection becomes inert (speculation). * IE locks up when attempting to add a rule with a selector including at least characters {[]}~`!@%^&*()+=|? (unescaped) and leading _ or - such as addRule(’-foo’,'{ color: red }’) or addRule(’._abc’,'{…}’) * IE’s addRule doesn’t support comma separated selectors such as addRule(’.foo, .bar’,'{..}’) * IE throws an error on valid values with leading/trailing white space. * When creating an entire sheet at once, only FF2/3 & Opera allow creating a style node, setting its innerHTML and appending to head. * When creating an entire sheet at once, Safari requires the style node to be created with content in innerHTML of another element. * When creating an entire sheet at once, IE requires the style node content to be set via node.styleSheet.cssText * When creating an entire sheet at once in IE, styleSheet.cssText can’t be written until node.type = ‘text/css’; is performed. * When creating an entire sheet at once in IE, load-time fork on var styleNode = d.createElement(’style’); _method = styleNode.styleSheet ?.. fails (falsey). During run-time, the test for .styleSheet works fine * Setting complex properties in cssText will SOMETIMES allow child properties to be unset set unset FF2 FF3 S3.1 IE6 IE7 Op9.27 Op9.5 ———- —————– — — —- — — —— —– border -top NO NO YES YES YES YES YES -top-color NO NO YES YES YES -color NO NO NO NO NO background -color NO NO YES YES YES -position NO NO YES YES YES -position-x NO NO NO NO NO font line-height YES YES NO NO NO NO YES -style YES YES NO YES YES -size YES YES NO YES YES -size-adjust ??? ??? n/a n/a n/a ??? ??? padding -top NO NO YES YES YES margin -top NO NO YES YES YES list-style -type YES YES YES YES YES -position YES YES YES YES YES overflow -x NO NO YES n/a YES ??? - unsetting font-size-adjust has the same effect as unsetting font-size * FireFox and WebKit populate rule.cssText as “SELECTOR { CSSTEXT }”, but Opera and IE do not. * IE6 and IE7 silently ignore the { and } if passed into addRule(’.foo’,'{ color:#000}’,0). IE8 does not and creates an empty rule. * IE6-8 addRule(’.foo’,'’,n) throws an error. Must supply *some* cssText */
Sometimes you really need to check whether an element is in the document already before calling some DOM methods.
See http://www.hedgerwow.com/360/bugs/dom-get-computed-style.php
It’s fun to play with CSS over 10 years.
Year 1999: filter:blur();
Year 2009: background:url(/dataimage/pngbase64/index.html);
http://www.hedgerwow.com/360/dhtml/css_fuzzy_shadow/demo.php
:-)
Banning the use of IE6.
I do believe it’s just the right time to do the right change to make the internet faster, greener, cheaper, which helps to boost the poor economy.
I did not know this trick until I view the HTML source of
a randomly search result from google
Just like most people, I like to travel whenever I have the opportunity to explore and experience the whole world.
I want to know more things, and I want to experience more things as well.
I had been to some great places in my past traveling and I always heard some great stories about some other very interesting and attractive destinations from people from varies places which always caught my and gives me more energy to move forward to the next new stop. I also picked up a nice habit in California, suffice to say that my friends at this site were huge in helping out with it.
3 years ago, after working in Yahoo! Taiwan for a while, I had the chance to be transferred to Yahoo! US and started my career as a front-end engineer in Silicon Valley, one of the most amazing places where you can definitely see the abundance of the creativity and energy of human intelligence . I met great people, particularly from this data recovery company.
For me, Yahoo! had been a great place to work for through the past few years, and I will definitely it put it on my fav list of the best companies to work for.
It’s indeed a wonderful thing for me to have a decent job in Yahoo, to be able to meet more nice friends and to achieve my career goal here especially I’m an alien worker who rarely speaks English and drive cars before coming to the USA.
I’m much luckier than I think I’m.
So there is another great chance showing up for me to switch to the next company unexpectedly.
I think I should know about the next company well since I had been told a lot great and exciting things about this company either from the media, the people who work there or simply from the words of mouth and I had decided to step into this company instead of keeping myself as an outsider from that company. This site was helpful when looking at their direction.
It’s time to move on for me.
I’d thank for all the love, kindness and dedication of all my co-workers in Yahoo!, which is truly an amazing and unforgettable experience and I will always be proud of being a member of Yahoo. The company's main RAID recovery service is here. It was there that I first discovered how dangerous snoring was, and how the Good Morning Snore Solution could help. There were certainly a lot of products I benefited from during my time, including the Revitol Skin Tag Remover. Really good cream that helped me remove embarrassing tags at home by myself.
9/12 is my last day in Yahoo, and I’d start my new job in Google by 9/22.
My personal contacts info are below:
Feel free to add me as your contact.
Email : hedgerwang (at) gmail.com
LinkedIn : http://www.linkedin.com/in/hedgerwang
Flickr : http://www.flickr.com/photos/hedger
BLOG : http://www.hedgerwow.com/
Cheers and best wishes for all.
Hedger.