如何在JavaScript中添加動態創建的腳本標簽屬性？

Question

我正在嘗試在動態創建的JavaScript屬性中添加data-client-key 。 檢查以下代碼，我嘗試了什么：

var script = document.createElement("script")
script.type = "text/javascript";
script.src = 'https://app.example.com/snap/script.js';
//script.data-client-key="CLIENT-KEY-HERE"; /* showing error message */
document.getElementsByTagName(script)[0].setAttribute("data-client-key", "CLIENT-KEY-HERE"); /* Uncaught TypeError: Cannot read property 'setAttribute' of undefined */
document.getElementsByTagName("head")[0].appendChild(script);

當我檢查元素時，我的輸出應如下所示：

<script src="https://app.example.com/snap/script.js" data-client-key="CLIENT-KEY-HERE"></script>

Answer 1

更改

document.getElementsByTagName(script)[0].setAttribute("data-client-key", "CLIENT-KEY-HERE");

至

script.setAttribute("data-client-key", "CLIENT-KEY-HERE");

因為您已經在script變量中包含了腳本元素

Answer 2

請查看以下有關setAttribute的文檔 。 你可以這樣

b.setAttribute("name", "helloButton");