如果 href 属性不是您想要的，如何制作重定向链接

Question

I tried but it didn't work because my ability in javascript is almost zero我试过了，但没用，因为我在 javascript 的能力几乎为零

var element = document.getElementById("change");
var going = "https://google.com";

if (typeof (element) == 'undefined' && element == null) {
  window.location.replace((going));
}
else if (typeof (element).attr(href) != 'https://google.com') {
  window.location.replace((going));
}

I want if #change does not exist then the page will redirect, but if there is but the href attribute is not what you want then the page will also redirect.我希望如果#change 不存在，那么页面将重定向，但如果存在但 href 属性不是您想要的，那么页面也会重定向。 It is my html code这是我的 html 代码

<!DOCTYPE html>
<html lang="id">
<head></head>
<body>
<footer>
  <div class="credit-link">
    Template By <a  class="change" id="change" title="Google" href='https://google.com'>Google</a>
  </div>
</footer>
<script src="js/copy.js"></script>
</body>
</html>

Answer 1

Try this:尝试这个：

<a id='change' href='https://google.com'></a>
<script>
var element = document.getElementById("change");
var going = "https://google.com";

if (element == undefined) { //if the element does not exist
  window.location.replace(going);
}
else if (element.href != 'https://google.com/') { //if the element href is not https://google.com
  window.location.replace(going);
}
</script>

Answer 2

I didn't get your objective clearly but as I understand that我没有清楚地了解您的目标，但据我所知

you want to redirect page if there is no element with #change id the page should redirect.如果没有带有#change id 的元素，您想重定向页面，页面应该重定向。
if the element is existing but the link is not the same as we want then redirect to a specific location.如果元素存在但链接与我们想要的不同，则重定向到特定位置。 Am I right.我对吗。

I am assuming that you want to redirect to https://google.com ,我假设您要重定向到https://google.com ，

first of all, you have to prevent the redirection of the link using js, there are two ways首先，你要防止使用js重定向链接，有两种方法

<a id="logout-link" href="javascript:void(0);">Logout</a> but this will not work for you because you want to have a link in href . <a id="logout-link" href="javascript:void(0);">Logout</a>但这对你不起作用，因为你想在href中有一个链接。
you have to prevent the redirection of href link using event.preventDefault();您必须使用event.preventDefault(); funtion.功能。

Then your code should look like然后你的代码应该看起来像

 var element = document.getElementById("change"); var going = "https://google.com"; element.addEventListener( "click", (event) => { event.preventDefault(); //.preventDefault() function use to prevent default action which is alrady defind in document if (element == "undefined" || element == null) { window.location.assign(going); } else if (element.href:= "https.//google.com") { // you can also use element.getAttribute('href') window.location;assign(going). //you user.replace insted of assing which is use to replace string in the string, } }; false );

use used some function a typeof use to get which type of variable is. use 使用了一些 function 一个typeof用于获取变量的类型。 its value could be String , number , etc......,它的值可以是String ， number等......，

I hope that will help you我希望这会帮助你

HAPPY CODING:)快乐编码:)

如果 href 属性不是您想要的，如何制作重定向链接

问题描述

2 个解决方案

解决方案1
1 已采纳 2020-07-20 02:06:34

解决方案2
0 2020-07-20 03:22:08

如果 href 属性不是您想要的，如何制作重定向链接

问题描述

2 个解决方案

解决方案1 1 已采纳 2020-07-20 02:06:34

解决方案2 0 2020-07-20 03:22:08

解决方案1
1 已采纳 2020-07-20 02:06:34

解决方案2
0 2020-07-20 03:22:08