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A React hook that lets you add script tags to a component. Useful when needing to load scripts for components in Framer X.
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| import * as React from "react" | |
| import { useState, useEffect } from "react" | |
| // Hook | |
| let cachedScripts = [] | |
| export function useScript(src) { | |
| // Keeping track of script loaded and error state | |
| const [state, setState] = useState({ | |
| loaded: false, | |
| error: false, | |
| }) | |
| useEffect(() => { | |
| // If cachedScripts array already includes src that means another instance ... | |
| // ... of this hook already loaded this script, so no need to load again. | |
| if (cachedScripts.includes(src)) { | |
| setState({ | |
| loaded: true, | |
| error: false, | |
| }) | |
| } else { | |
| cachedScripts.push(src) | |
| // Create script | |
| let script = document.createElement("script") | |
| script.src = src | |
| script.async = true | |
| // Script event listener callbacks for load and error | |
| const onScriptLoad = () => { | |
| setState({ | |
| loaded: true, | |
| error: false, | |
| }) | |
| } | |
| const onScriptError = () => { | |
| // Remove from cachedScripts we can try loading again | |
| const index = cachedScripts.indexOf(src) | |
| if (index >= 0) cachedScripts.splice(index, 1) | |
| script.remove() | |
| setState({ | |
| loaded: true, | |
| error: true, | |
| }) | |
| } | |
| script.addEventListener("load", onScriptLoad) | |
| script.addEventListener("error", onScriptError) | |
| // Add script to document body | |
| document.body.appendChild(script) | |
| // Remove event listeners on cleanup | |
| return () => { | |
| script.removeEventListener("load", onScriptLoad) | |
| script.removeEventListener("error", onScriptError) | |
| } | |
| } | |
| }, [src]) // Only re-run effect if script src changes | |
| return [state.loaded, state.error] | |
| } |
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