September 2020
Beginner to intermediate
456 pages
11h 4m
English
Content preview from Svelte and Sapper in Action
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7 DOM interactions
This chapter covers
- Inserting HTML from string variables
- Avoiding cross-site scripting attacks from untrusted HTML
- Using “actions” to run code when an element is added to the DOM
- Using the
tickfunction to modify the DOM after Svelte updates - Implementing a dialog component
- Implementing drag and drop
Sometimes Svelte applications need to tap into DOM functionality that is not directly supported by Svelte. Examples include
-
Moving focus to an input where the user is expected to enter data
-
Setting the cursor position and selected text inside an
input -
Calling methods on a
dialogelement -
Allowing users to drag particular elements onto others
All of these require going beyond simply writing the HTML to be rendered inside ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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