怎么动态引入js文件路径

function loadScript(url, callback) {
    var script = document.createElement('script');
    script.type = 'text/javascript';
    if (script.readyState) { // IE
        script.onreadystatechange = function () {
            if (script.readyState == 'loaded' || script.readyState == 'complete') {
                script.onreadystatechange = null;
                callback();
            }
        };
    } else { // Others
        script.onload = function () {
            callback();
        };
    }
    script.src = url;
    document.getElementsByTagName('head')[0].appendChild(script);
}

// 使用示例
loadScript('path/to/your/script.js', function () {
    console.log('Script loaded!');
});

function loadScript(url) {
    fetch(url)
        .then(response => response.text())
        .then(script => eval(script))
        .catch(error => console.error('Error loading script:', error));
}

// 使用示例
loadScript('path/to/your/script.js');

function loadScript(url) {
    return new Promise((resolve, reject) => {
        const script = document.createElement('script');
        script.src = url;
        script.onload = resolve;
        script.onerror = () => reject(new Error(`Unable to load script ${url}`));
        document.head.appendChild(script);
    });
}

// 使用示例
loadScript('path/to/your/script.js')
    .then(() => console.log('Script loaded!'))
    .catch(error => console.error(error));