Question

我正在尝试将锚标记的网址存储在变量中，但是我一直遇到错误。

var buttonUrl = document.getElementById('test').href;

Uncaught TypeError: Cannot read property 'href' of null

Answer 1

确保在窗口加载后后您的代码正在运行：

window.onload = function() {
    var buttonUrl = document.getElementById("test").href;
    console.log(buttonUrl);
    //This will log the href of the "test" element to the console as a debugger. You can now use buttonUrl as you want.
}

Answer 2

有时您需要引用元素的索引，例如零。试试这个

var buttonUrl = document.getElementById('test')[0].href

使用JavaScript获取定位标记URL

2 个答案: