# 你好 * 哈哈 - [] true - [] true ``` var createScript = (src) => { var scriptElement = document.createElement('script') scriptElement.src = src scriptElement.type = 'text/javascript' document.head.appendChild(scriptElement) return new Promise((resolve) => { scriptElement.onload = function () { resolve(src) } }) } ``` | h1 | h2 | h3 | |:------|:-------:|--------:| | 100 | [a][1] | ![b][2] | | *foo* | **bar** | ~~baz~~ |