Vanilla Javascript：如何使按钮只能点击一次

Question

I have a quiz app application that I am working on that dynamically creates 2-4 buttons for the answer.我有一个正在开发的测验应用程序，它会动态地为答案创建 2-4 个按钮。 However, if you click on an answer, you can keep clicking on the same answer or keep clicking the other answers.但是，如果您单击一个答案，您可以继续单击相同的答案或继续单击其他答案。 I want the user to be able to click one of the buttons but then not be able to keep clicking.我希望用户能够单击其中一个按钮，但随后无法继续单击。 caveat though: when a user clicks one of the buttons, a new "Next" button gets created and that one does still need it's click event.但是需要注意的是：当用户单击其中一个按钮时，会创建一个新的“下一步”按钮，并且该按钮仍然需要它的单击事件。

tl;dr I need dynamically created buttons to be clickable only once but a "Next" button to still be clickable. tl;博士我需要动态创建的按钮只能点击一次，但“下一步”按钮仍然可以点击。

Code:代码：

function renderButtons() {
  var answerContainer = document.getElementById("answer-buttons");
  answerContainer.innerHTML = "";

  for (var i = 0; i < 4; i++) {
    var button = document.createElement("button");
    button.classList.add("btn");
    button.setAttribute("id", "answerBtns");
    button.hasAttribute("data-correct");
    button.setAttribute("data-correct", questions[count].answers[i].correct);
    button.onclick = btnclick;
    button.textContent = questions[count].answers[i].text;
    answerContainer.appendChild(button);
  }
}

// if user clicks on button check if true
function btnclick(e) {
  e.preventDefault();
  var value = event.target.dataset.correct;
  scoreBox.textContent = "Score: " + score;
  if (value === "true") {
    score += 5;
    document.body.style.background = "green";
  } else {
    document.body.style.background = "red";
  }

  var next = document.getElementById("answer-buttons");
  var nextBtn = document.createElement("button");
  nextBtn.classList.add("nextBtn");
  nextBtn.textContent = "Next";

  next.appendChild(nextBtn);

  nextBtn.onclick = nextBtnFx;

if you want to see what I'm talking about, the app can be found here: https://andrethetallguy.github.io/Animal-Quiz/如果你想看看我在说什么，可以在这里找到该应用程序： https://andrethetallguy.github.io/Animal-Quiz/

Thanks!!!谢谢！！！

Answer 1

In the handler function nextBtnFx you could disable the button with在处理程序 function nextBtnFx 中，您可以使用禁用按钮

this.disabled = "true"

that would make it unclickable after the first click这将使它在第一次点击后无法点击

ref : https://stackoverflow.com/a/17115132/13998159参考： https://stackoverflow.com/a/17115132/13998159

Answer 2

 <.DOCTYPE html> <html> <head> <title>Button</title> </head> <body> <input type="button" id="btn01" value="OK"> <button onclick="disableElement()">Disable</button> <button onclick="enableElement()">Enable</button> <script> function disableElement() { document.getElementById("btn01");disabled = true. } function enableElement() { document.getElementById("btn01");disabled = false; } </script> </body> </html>

You can use these functions to disable/enable the buttons.您可以使用这些功能来禁用/启用按钮。

Vanilla Javascript：如何使按钮只能点击一次

问题描述

2 个解决方案

解决方案1
1 2020-07-27 19:24:40

解决方案2
0 2020-07-27 19:34:52

Vanilla Javascript：如何使按钮只能点击一次

问题描述

2 个解决方案

解决方案1 1 2020-07-27 19:24:40

解决方案2 0 2020-07-27 19:34:52

解决方案1
1 2020-07-27 19:24:40

解决方案2
0 2020-07-27 19:34:52