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HTMLScriptElement: blocking property - Web APIs | MDN
HTMLScriptElement: blocking property Limited availability
The blocking
property of the HTMLScriptElement
interface is a string indicating that certain operations should be blocked on the fetching of the script.
It reflects the blocking
attribute of the <script>
element.
A string. Must be a space-separated list of blocking tokens listed below indicating the operations that are to be blocked:
render
The rendering of content on the screen is blocked.
<script id="el" type="text/javascript" async blocking="render"></script>
const el = document.getElementById("el");
console.log(el.blocking); // Output: "render"