如何将动态变量传递给 JS 中的函数？

Question

尝试动态传递 ID 会中断函数：

<p id="email1" onclick="mailTo(this.id,'com','abc','info','My Website','I have a question for you: ')">Send us an email</p>
<p id="email2" onclick="mailTo(this.id,'org','xyz','support','My Other Website','I want to report a problem with your website.')">Report Website Problems</p>

硬编码document.querySelector('#email')成功，但需要id是动态的。控制台正确打印 var。错误：qS.addEventListener is not a function.

function mailTo(idx, tld, domain, account, site, bodyText) {
  let qS = `document.querySelector('#${idx}')`;
  console.log(qS);
  let arrEmail = [tld, domain, account, site, bodyText];
  const buildEmail = arr => `${arr[2]}@${arr[1]}.${arr[0]}?subject=From%20the%20${arr[3]}%20website&body=${arr[4]}`;
  qS.addEventListener("click", event => {
    let str = `mailto:${buildEmail(arrEmail)}`;
    location.href = str;
  });
}

沙盒：https://codesandbox.io/s/p8k45v350

Answer 1

这对您有帮助：

function mailTo(...items)
{
console.log(items[0].id);
}

<p id="email1" onclick="mailTo(this,'com','abc','info','My Website','I have a question for you: ')">Send us an email</p>
<p id="email2" onclick="mailTo(this,'org','xyz','support','My Other Website','I want to report a problem with your website.')">Report Website Problems</p>

Answer 2

仅动态构建选择器参数...

let qS = document.querySelector(`#${idx}`);

Answer 3

如果你改变

    let qS = `document.querySelector('#${idx}')`;

至

    let qS = this;

您的代码有效。但是您不需要提供 id 来查询元素，因为您可以使用 this.

访问它

如何将动态变量传递给 JS 中的函数？

How can I pass a dynamic variable to function in JS?

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