Weekly Platform News: HTML Inspection in Search Console, Global Scope of Scripts, Babel env Adds defaults Query

This week's web platform news covers several key updates: Google Search Console simplifies HTML inspection, clarifies the behavior of CSS custom properties, highlights the global scope of JavaScript variables, and announces Babel's defaults query support. Plus, a convenient compilation of June 2019's news is available.

Enhanced HTML Inspection in Google Search Console

Google Search Console's URL Inspection tool now features improved controls for searching and copying crawled page HTML.

Important: The tool displays information about Google's indexed version of a specific page. Access Search Console at https://www.php.cn/link/e53da0660d5d695870b49aee039f9148.

(via Barry Schwartz)

CSS Custom Property Computation: Once Per Element

CSS custom properties are computed only once per element. Redefining a custom property used within another custom property on a nested element won't affect the parent's computed value.

<code>html {
  --angle: 90deg;
  --gradient: linear-gradient(var(--angle), blue, red);
}

header {
  --angle: 270deg; /* ignored */
  background-image: var(--gradient); /* inherited value */
}</code>

(via Miriam Suzanne)

Understanding JavaScript Script Scope

Variables declared with let, const, or class at the top level of a <script></script> element remain accessible to subsequent scripts on the page. This is considered the global scope of scripts.

(via Surma)

Babel's env Preset Now Supports defaults Query

Babel's @babel/preset-env now accepts the defaults query, targeting browserslist's default browsers (listed at browsersl.ist). Omitting target browsers causes Babel to apply all syntax transforms.

<code>{
  "presets": [
    [
      "@babel/preset-env",
      {
        "targets": { "browsers": "defaults" }
      }
    ]
  ]
}</code>

(via Nicolò Ribaudo)

June 2019 Web Platform News Compilation

A comprehensive PDF (10 pages) summarizing all 59 June 2019 news items is available for download.

Download PDF

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