异步加载script - 晓祄 - 沸点 - 掘金

前端工程师

#每天一个知识点#
异步加载script
function loadScript(url, callback) {
let oscript = document.createElement("script");
if(oscript.readyState) { //ie8及以下版本
oscript.onreadystatechange = function () {
if(oscript.readyState === 'complete' || oscript.readyState === 'loaded') {
callback();
}
}
} else {
oscript.onload = function () {
callback();
}
}
oscript.src = url;
document.body.appendChild(oscript);
}

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前端开发圈