javascript - 根据按钮点击显示隐藏内容

Question

如何根据按钮点击显示/隐藏内容？

我能够实现这一点，如下所示，但我的代码很长，并且确信有更好/更短的方法来做到这一点。

HTML

<p class="option2-top">option two</p>
<p class="option3-top">option three</p>

<button id="option-one">one</button>
<button id="option-two">two</button>
<button id="option-three">three</button>

<p class="option1-below">option one</p>
<p class="option2-below">option two</p>
<p class="option3-below">option three</p>

Javascript

var oneTop = document.querySelector(".option1-top");
var twoTop = document.querySelector(".option2-top");
var threeTop = document.querySelector(".option3-top");

var oneBelow = document.querySelector(".option1-below");
var twoBelow = document.querySelector(".option2-below");
var threeBelow = document.querySelector(".option3-below");

oneTop.style.display = "block";
twoTop.style.display = "none";
threeTop.style.display = "none";

oneBelow.style.display = "block";
twoBelow.style.display = "none";
threeBelow.style.display = "none";

document.getElementById("option-one").onclick = function () {
oneTop.style.display = "block";
twoTop.style.display = "none";
threeTop.style.display = "none";

oneBelow.style.display = "block";
twoBelow.style.display = "none";
threeBelow.style.display = "none";
};

document.getElementById("option-two").onclick = function () {
oneTop.style.display = "none";
twoTop.style.display = "block";
threeTop.style.display = "none";

oneBelow.style.display = "none";
twoBelow.style.display = "block";
threeBelow.style.display = "none";
};

document.getElementById("option-three").onclick = function () {
oneTop.style.display = "none";
twoTop.style.display = "none";
threeTop.style.display = "block";

oneBelow.style.display = "none";
twoBelow.style.display = "none";
threeBelow.style.display = "block";
};

这是一个有效的JSfiddle

我不介意 jQuery 解决方案！

标签： javascriptjquery

Answer 1

vanilla JavaScript 中的一种可能的解决方案，不需要您更改 html：

let topTexts = document.querySelectorAll('p[class$="top"');
let bottomTexts = document.querySelectorAll('p[class$="below"');
let buttons = document.querySelectorAll("button");

for(let i = 0; i < buttons.length; i++) {
  buttons[i].onclick = () => {
    Array.from(topTexts).map((e, j) => (e.hidden = i !== j));
    Array.from(bottomTexts).map((e, j) => (e.hidden = i !== j));
  };
}

buttons[0].click();

<p class="option1-top">option one</p>
<p class="option2-top">option two</p>
<p class="option3-top">option three</p>

<button id="option-one">one</button>
<button id="option-two">two</button>
<button id="option-three">three</button>

<p class="option1-below">option one</p>
<p class="option2-below">option two</p>
<p class="option3-below">option three</p>