js 判断js文件加载完成

<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.onload = function() {
    console.log('JS文件加载完成');
};
document.head.appendChild(script);

<script src="path/to/your/script.js" defer></script>

document.addEventListener('DOMContentLoaded', function() {
    console.log('DOM内容加载完成，JS文件也应该加载完成了');
});

function loadScript(src) {
    return new Promise(function(resolve, reject) {
        var script = document.createElement('script');
        script.src = src;
        script.onload = resolve;
        script.onerror = reject;
        document.head.appendChild(script);
    });
}

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

init();

function loadScript(src, callback) {
    var script = document.createElement('script');
    script.src = src;
    script.onload = callback;
    document.head.appendChild(script);
}

loadScript('path/to/your/script.js', function() {
    console.log('JS文件加载完成');
});