如何更改div元素中的网址，该元素由iframe使用javascript加载

Question

In my manifest.json:

"content_scripts": [
        {
        "matches": [
            "http://*/*",
            "https://*/*"
            ],
        "css":["style.css"],
        "js": ["./js/jquery-3.3.1.js","content-script.js", "./search-api/search-api.js"],
        "run_at": "document_end"
        }
    ],

In content-script.js

var height = "40px";
var iframe = document.createElement("iframe");
iframe.src = chrome.extension.getURL("toolbar.html");
iframe.style.height = height;
iframe.style.width = "100%";
iframe.style.position = "fixed";
iframe.style.top = "0";
iframe.style.left = "0";
iframe.style.zIndex = "938089"; // Some high value
// Etc. Add your own styles if you want to
document.documentElement.appendChild(iframe);

// continuing add-toolbar.js
var bodyStyle = document.body.style;
var cssTransform = 'transform' in bodyStyle ? 'transform' : 'webkitTransform';
bodyStyle[cssTransform] = 'translateY(' + height + ')';

toolbar.html:

<div style="color:aqua">
    <a target="_blank" href="https://www.uber.com" id="toolbars">Uber cool home page</a>
</div>

This loads up the iframe into my webpage fine. But I want to dynamically change the url of the link. Let's say I want to change it to amazon.com from uber.com.

Tried:

iframe.find('toolbars').href("www.amazon.com")

Answer 1

The Simplest way to do this is to use JavaScript or jquery.

1. JavaScript:

   document.getElementById("toolbars").setAttribute("href", "www.amazon.com");

2. JQuery:

   $('#toolbars').attr('href', 'www.amazoncom');

Answer 2

To access an element in an imbedded iframe you first need to access it contents() and then use find() to get it elements. In your case that would look like:

$('iframe').contents ().find ('#toolbars').attr ('href', 'www.amazon.com');

Answer 3

You can do like this.

$(‘#iframID’).attr(‘src’,’your url’);

There is a perfect answer here .