单击Javascript更改url

Question

我想根据点击切换按钮(输入复选框(来修改url。

至于价格，我无法在点击时更改网址。我希望在第二次点击时，(按钮的(url将返回这个初始值(url1(。

价格是正确的。。。点击后，更改很好，但url不好：/

感谢的帮助

function show() {
var x = document.getElementById("price");
if (x.innerHTML === "59€") {
x.innerHTML = "89€";
} else {
x.innerHTML = "59€";
}
var x = document.getElementById("url1").href;
if (x.href === "url1") {
document.getElementById("url1").href = "url2";
} else {
document.getElementById("url1").href = "url";
}
}

body{font-family:arial, 'sans serif';}
.btn{
background:#000;
padding:10px;
color:#fff;
text-decoration:none;
font-family:arial, 'sans serif';
margin:0 auto;
width:150px;
display:block;
text-align:center;
border-radius:10px;
}
.switch {
position: relative;
display: inline-block;
width: 60px;
height: 34px;
}
/* Hide default HTML checkbox */
.switch input {
opacity: 0;
width: 0;
height: 0;
}
/* The slider */
.slider {
position: absolute;
cursor: pointer;
top: 0;
left: 0;
right: 0;
bottom: 0;
background-color: #ccc;
-webkit-transition: .4s;
transition: .4s;
}
.slider:before {
position: absolute;
content: "";
height: 26px;
width: 26px;
left: 4px;
bottom: 4px;
background-color: white;
-webkit-transition: .4s;
transition: .4s;
}
input:checked + .slider {
background-color: #2196F3;
}
input:focus + .slider {
box-shadow: 0 0 1px #2196F3;
}
input:checked + .slider:before {
-webkit-transform: translateX(26px);
-ms-transform: translateX(26px);
transform: translateX(26px);
}
/* Rounded sliders */
.slider.round {
border-radius: 34px;
}
.slider.round:before {
border-radius: 50%;
}
h3{
text-align:center;
}

<p>Click here</p>
<label class="switch">
<input onclick="show()" type="checkbox">
<span class="slider round"></span>
</label>

<h3 class="price-presta" id="price">59€</h3>
<a class="btn" id="url1" href="url1">url link button</a>
<!-- url does not change on second click like the price -->

Answer 1

有2个问题。首先，这里：

var x = document.getElementById("url1").href;
if (x.href === "url1") {

您将href放入x变量中，然后尝试检查x变量的href，但字符串没有href属性。只需检查x本身即可。

其次，.href属性将返回链接的完整路径。例如，在"堆栈代码段"中，它返回https://stacksnippets.net/url1。改为使用getAttribute：

function show() {
const price = document.getElementById("price");
price.textContent = price.textContent === "59€" ? "89€" : "59€";

const anchor = document.getElementById("url1");
anchor.href = anchor.getAttribute('href') === 'url1' ? 'url2' : 'url';
}

body {
font-family: arial, 'sans serif';
}
.btn {
background: #000;
padding: 10px;
color: #fff;
text-decoration: none;
font-family: arial, 'sans serif';
margin: 0 auto;
width: 150px;
display: block;
text-align: center;
border-radius: 10px;
}
.switch {
position: relative;
display: inline-block;
width: 60px;
height: 34px;
}

/* Hide default HTML checkbox */
.switch input {
opacity: 0;
width: 0;
height: 0;
}

/* The slider */
.slider {
position: absolute;
cursor: pointer;
top: 0;
left: 0;
right: 0;
bottom: 0;
background-color: #ccc;
-webkit-transition: .4s;
transition: .4s;
}
.slider:before {
position: absolute;
content: "";
height: 26px;
width: 26px;
left: 4px;
bottom: 4px;
background-color: white;
-webkit-transition: .4s;
transition: .4s;
}
input:checked+.slider {
background-color: #2196F3;
}
input:focus+.slider {
box-shadow: 0 0 1px #2196F3;
}
input:checked+.slider:before {
-webkit-transform: translateX(26px);
-ms-transform: translateX(26px);
transform: translateX(26px);
}

/* Rounded sliders */
.slider.round {
border-radius: 34px;
}
.slider.round:before {
border-radius: 50%;
}
h3 {
text-align: center;
}

<p>Click here</p>
<label class="switch">
<input onclick="show()" type="checkbox">
<span class="slider round"></span>
</label>

<h3 class="price-presta" id="price">59€</h3>
<a class="btn" id="url1" href="url1">url link button</a>
<!-- url does not change on second click like the price -->

Answer 2

您已经将url设置为变量"x〃；。所以if条件必须直接在字符串上，而不是元素上：

//[...]
var x = document.getElementById("url1").href;
if (x === "url1") {
document.getElementById("url1").href = "url2";
} 
//[...]

Answer 3

完美！谢谢

只是！：'url"？"url2'：'url'；VS"url1"url2'：'url'；：(

function show() {
const price = document.getElementById("price");
price.textContent = price.textContent === "59€" ? "89€" : "59€";

const anchor = document.getElementById("url1");
anchor.href = anchor.getAttribute('href') === 'url' ? 'url2' : 'url';
}

function show() {
const price = document.getElementById("price");
price.textContent = price.textContent === "59€" ? "89€" : "59€";

const anchor = document.getElementById("url1");
anchor.href = anchor.getAttribute('href') === 'url' ? 'url2' : 'url';
}

body {
font-family: arial, 'sans serif';
}
.btn {
background: #000;
padding: 10px;
color: #fff;
text-decoration: none;
font-family: arial, 'sans serif';
margin: 0 auto;
width: 150px;
display: block;
text-align: center;
border-radius: 10px;
}
.switch {
position: relative;
display: inline-block;
width: 60px;
height: 34px;
}

/* Hide default HTML checkbox */
.switch input {
opacity: 0;
width: 0;
height: 0;
}

/* The slider */
.slider {
position: absolute;
cursor: pointer;
top: 0;
left: 0;
right: 0;
bottom: 0;
background-color: #ccc;
-webkit-transition: .4s;
transition: .4s;
}
.slider:before {
position: absolute;
content: "";
height: 26px;
width: 26px;
left: 4px;
bottom: 4px;
background-color: white;
-webkit-transition: .4s;
transition: .4s;
}
input:checked+.slider {
background-color: #2196F3;
}
input:focus+.slider {
box-shadow: 0 0 1px #2196F3;
}
input:checked+.slider:before {
-webkit-transform: translateX(26px);
-ms-transform: translateX(26px);
transform: translateX(26px);
}

/* Rounded sliders */
.slider.round {
border-radius: 34px;
}
.slider.round:before {
border-radius: 50%;
}
h3 {
text-align: center;
}

<p>Click here</p>
<label class="switch">
<input onclick="show()" type="checkbox">
<span class="slider round"></span>
</label>

<h3 class="price-presta" id="price">59€</h3>
<a class="btn" id="url1" href="url1">url link button</a>
<!-- url does not change on second click like the price -->