Issue #160 (Node.wholeText, JS Libs, JS Utils, Mobile)08/11/16
Way back in issue #32 I discussed the splitText() and normalize() methods, which can be used to manipulate text nodes. Here's a quick summary: Calling normalize() on an element with multiple child text nodes will "normalize" those text nodes into a single text node, so the node count will be only 1. splitText() on the other hand lets you split a text node at a specified place, to create multiple text nodes.
However, if you want a quick way to treat multiple text nodes like a single text node, simply for the purpose of reading the text content, you can do so using the wholeText property, which is accessed via the text node interface. Below is some commented code, along with a demo so you can see how it works. We'll assume that the main element we're accessing (reference via firstElementChild) is just a simple paragraph of text, with no other HTML inside it:
let b = document.body;
// length of child nodes is "1"
// We split the child text nodes
// Now the length is "2"
// Read the text as a single text node
// It's still 2 nodes
// Then we can normalize as needed
// Back to "1" text node
The comments explain most of what's going on. The lone variable is just a reference to the body element, for brevity, but I could access the text nodes in any number of ways.
You can see the wholeText property used on the fifth line of code (not counting comments). As shown, you need to access it via one of the text nodes. As the spec explains, this property "must return a concatenation of the data of the contiguous Text nodes of the context object, in tree order."
This is similar to what happens when you use the more well-known innerText and textContent properties. The main difference being that this one is accessed on a text node that forms part of the full text (i.e. the "whole text") that you want to access. It should also be noted that wholeText also will preserve white space and only accesses text that is continuous, without any HTML elements interspersed (which of course would create multiple text nodes, separated by elements).
From my research, this lesser-known property is supported in all browsers, including back to IE9, so it seems to be fine to use anywhere.
Now on to this week's tools!
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A lightweight (~7kb) Virtual DOM framework built around the concept that any function/object can be a component. Components in Dio share the same APIs as React components with a few additions.
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Angus Croll's "library of dependency-free utilities that do just do one thing."
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React Worker Dom
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An attractive iOS style "switch" component to put in place of an HTML checkbox.
smooth scroll polyfill
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A console/inspector tool for debugging on mobile.
Angular Mobile Toolkit
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"Make videos playable inline on the iPhone (prevents automatic fullscreen)."
"Instantly make your desktop / hybrid apps more responsive on touch devices."
A Tweet for Thought
Anselm Hannemann with a thought on mystery icons in your apps.
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Before I Go...
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