利用Pjax下载动态加载插件方案分享

// NewHTML 为 新页面 HTML
const pageContent = NewHTML.replace('<body', '<div id="DynamicPluginBody"').replace('</body>', '</div>');
let element = document.createElement('div');
element.innerHTML = pageContent;
const children = element.querySelector('#DynamicPluginBody').querySelectorAll('script[data-reload-script]');

children.forEach(item => {
    const element = document.createElement('script');
    for (const { name, value } of arrayify(item.attributes)) {
        element.setAttribute(name, value);
    }
    element.textContent = item.textContent;
    element.setAttribute('async', 'false');
    document.body.insertBefore(element)
})

let scripts = Array.from(document.scripts)
let scriptCDN = []
let scriptBlock = []

children.forEach(item => {
    if (item.src)
        scripts.findIndex(s => s.src === item.src) < 0 && scriptCDN.push(item);
    else
        scriptBlock.push(item.innerText)
})

const loadScript = (item) => {
    return new Promise((resolve, reject) => {
        const element = document.createElement('script');
        for (const { name, value } of arrayify(item.attributes)) {
            element.setAttribute(name, value);
        }
        element.textContent = item.textContent;
        element.setAttribute('async', 'false');
        element.onload = resolve
        element.onerror = reject
        document.body.insertBefore(element)
    })
}

const runScriptBlock = (code) => {
    try {
        const func = new Function(code);
        func()
    } catch (error) {
        try {
            window.eval(code)
        } catch (error) {
        }
    }
}

Promise.all(scriptCDN.map(item => loadScript(item))).then(_ => {
    scriptBlock.forEach(code => {
        runScriptBlock(code)
    })
})

<script data-reload-script>
    DynamicPlugin.add({
        // 页面加载时执行
        mount() {
            this.timer = setInterval(() => {
                document.getElementById('time').innerText = new Date().toString()
            }, 1000)
        },
        // 页面卸载时执行
        unmount() {
            window.clearInterval(this.timer)
            this.timer = null
        }
    })
</script>

let cacheMount = []
let cacheUnMount = []
let context = {}

class DynamicPlugin {
    add(options) {
        if (isFunction(options))
            cacheMount.push(options)

        if (isPlainObject(options)) {
            let { mount, unmount } = options
            if (isFunction(mount))
                cacheMount.push(mount)
            if (isFunction(unmount))
                cacheUnMount.push(unmount)
        }

        // 执行当前页面加载钩子
        this.runMount()
    }

    runMount() {
        while (cacheMount.length) {
            let item = cacheMount.shift();
            item.call(context);
        }
    }

    runUnMount() {
        while (cacheUnMount.length) {
            let item = cacheUnMount.shift();
            item.call(context);
        }
    }
}