js 浏览器唯一标识的方式

代码如下

<script>
    const fpPromise = new Promise((resolve, reject) => {
        const script = document.createElement('script')
        script.onload = resolve
        script.onerror = reject
        script.async = true
        script.src = 'https://cdn.jsdelivr.net/npm/'
            + '@fingerprintjs/fingerprintjs@3/dist/fp.min.js'
        document.head.appendChild(script)
    })
        .then(() => FingerprintJS.load())
 
    // Get the visitor identifier when you need it.
    fpPromise.then(fp => fp.get()).then(result => {
        // This is the visitor identifier:
        const visitorId = result.visitorId
        console.log('唯一标识:' + visitorId)
    })
</script>