判断js文件是否加载完成

<script src="path/to/your/script.js" onload="scriptLoaded()"></script>
<script>
function scriptLoaded() {
    console.log('JS文件加载完成');
}
</script>

var script = document.createElement('script');
script.src = 'path/to/your/script.js';
script.addEventListener('load', function() {
    console.log('JS文件加载完成');
});
document.head.appendChild(script);

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

async function loadAndExecute() {
    try {
        await loadScript('path/to/your/script.js');
        console.log('JS文件加载完成');
    } catch (error) {
        console.error(error);
    }
}

loadAndExecute();

document.addEventListener('DOMContentLoaded', function() {
    console.log('文档加载完成，但JS文件可能还未加载完成');
});

window.addEventListener('load', function() {
    console.log('所有资源包括JS文件加载完成');
});