YUJI TOMITA

Tech Consultant. Backend Developer. Frontend Developer. Designer. Adventure Time Super Fan.

Solution to sudden inertial scroll loss issues, and scrollTop() == 0 on mobile

The sudden loss of inertial scroll on one of my websites has had my head scratching for literally a year.

When I ran into it again, alongside issues with scrollTop() always returning 0, and being unable to move the viewport on mobile, I stumbled across the fix: html/body must NOT have a height set to 100%.

Sadly, the sticky footer solution I use requires 100% height (and no min-height will not work). Ultimately I have ended up repeatedly using both media queries, and JS based platform detection to target styles most effectively.

There it is though: if you have issues with inertial scroll loss or scrollTop not functioning, check if you have html/body set to 100% height.

Photoshop: Define save for web settings for all slices at once

Use the slice selector tool in the save for web dialog, drag a box around all slices, then set the slice settings.

IMO whatever output settings you select should default to all slices.

Tar a directory without including its parents

To tar a directory without its parent, simply use the -C or –directory flag to specify the directory to "cd" into, then provide "." as the directory to tar.

Example:

To tar everything in /foobar/ without including /foobar/ in the path names, run

tar -zcvf foobar.tar.gz -C foobar/ .

That simple.

Google maps V3 API Wrong Marker Position

Don’t use zoom values that are not integers (2.7) caused huge problems for me.

It may have to do with the supporting marker customization libraries, as this problem was only apparent when customizing the marker heavily.

HTML Tidy Sublime + Django Remove %20 Characters

The HTML Tidy plugin for Sublime is amazing when people like to code with no line breaks.. but by default breaks django tags by converting spaces in django statements to %20.

I found HTMLTidy has a suspicious option called "fix-uri". Disable that in your sublime package preferences (you’ll have to add the key/value yourself) and voila everything is clean!

Ultimately, I use HTML Tidy to indent, not modify my code.

"fix-uri": false

Pip Pillow OSX 10.9 CLANG GCC 4.9 Missing Directory

After trying everything, the problem was solved by upgrading my pip.

pip install pip –upgrade

pip install pillow.

Custom Desk.com Chat Icon

Desk.com doesn’t have very much documentation on their chat widget.

If there is, let me know.

All I needed was a custom icon for the chat button. I had to hack it into place by continually checking to see if the widget has initialized yet. Once it has initialized, hide the desk.com chat icon and attach a click handler to our own button, which merely proxies the click to the hidden original button.

// <a href="http://desk.com">desk.com</a> hack; custom chat now button.
var $chatButton = $(&quot;.my-chat-button&quot;);

var intervalID = setInterval(function() {
$widget = $(&quot;.a-desk-widget&quot;);
if ($widget.length != 0) {
clearInterval(intervalID);
$widget.hide();

$chatButton = $(&quot;.chat-now-button&quot;);

$chatButton.click(function() {
$widget.click();
})
}
})

Fix overflow scrolling juddering, or loss of touch scroll control

To fix judder during scrolling, or when the touch event is inconsistency scrolling the wrong element, apply a webkit overflow scrolling css rule:

-webkit-overflow-scrolling: touch;

Disable Mobile Safari Top/Bottom Bar auto show/hide viewport changes

Turns out you can disable the top/bottom bar auto show and hide nonsense which changes the size of the viewport, often causing full screen elements to need to be recalculated.

Add "minimal-ui" to the viewport meta tag to remove the behavior.

<meta name="viewport" content="width=device-width, minimal-ui">

Thanks to ayr.com for showing me it’s even possible.

Django – Cannot force an update in save() with no primary key.

If all debugging steps lead you nowhere with this problem, make sure you are not deferring any fields on your queryset prior to an insert attempt.

For example, I was calling save() on a recently copied object which initially had a deferred field.

Example:

obj = Object.objects.defer('foo')[0]

<a href="http://obj.id">obj.id</a> = None
obj.save() # triggers error

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