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Getting the SVG document(contentDocument) using javascript inside the Object tag returns null

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The following code work in Firefox v54, but stopped working on Firefox v68.4.1 (possibly earlier version as well).

index.html: <body>

<object type="image/svg+xml" data="test.svg", id="test_svg_id">

   Your browser doesn't support SVG
</object>

<script type="text/javascript" src="test.js"></script>

</body>

javascript: function init() {

 console.log("init()");

// Get the overall SVG defined in the Index HMTL page var svg_object = document.getElementById("test_svg_id");

// Get the SVG document inside the Object tag var svg_document = svg_object.contentDocument; }

Any idea why contentDocument is always null?

The following code work in Firefox v54, but stopped working on Firefox v68.4.1 (possibly earlier version as well). index.html: <body> <object type="image/svg+xml" data="test.svg", id="test_svg_id"> Your browser doesn't support SVG </object> <script type="text/javascript" src="test.js"></script> </body> javascript: function init() { console.log("init()"); // Get the overall SVG defined in the Index HMTL page var svg_object = document.getElementById("test_svg_id"); // Get the SVG document inside the Object tag var svg_document = svg_object.contentDocument; } Any idea why contentDocument is always null?

被選擇的解決方法

Zaak said

I am not using a server. I am directly opening the index.html. Is this a security issue that has been fixed in latest version of Firefox?

Oh, ok. That is the issue then. This is not supposed to work if you're just using file://. I guess it was probably added. It won't affect you if you actually publish the project though.

You can serve up the files locally with a variety of solutions. This one looks good if you are using node: https://github.com/http-party/http-server

I usually use python, so I run "python -m http.server" in the directory where all my files are. There are many solutions to serve up your files easily. I would highly recommend this as there are many more things that simply won't work when you open the html file directly.

從原來的回覆中察看解決方案 1
引用

額外的系統細節

已安裝的外掛程式

  • Shockwave Flash 32.0 r0

應用程式

  • User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:68.0) Gecko/20100101 Firefox/68.0

更多資訊

Matthew Thomas
  • Top 25 Contributor
13 個解決方法 90 個答案

I believe either svg_object.innerHTML or svg_object.innerText should give you the output you are looking for.

I believe either svg_object.innerHTML or svg_object.innerText should give you the output you are looking for.

由 Matthew Thomas 於 修改

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引用

提出問題者

I am trying to use interactive SVG and the contentDocument would give me access to all the object I can manipulate. I think something has been changed in later version of Firefox.

I am trying to use interactive SVG and the contentDocument would give me access to all the object I can manipulate. I think something has been changed in later version of Firefox.
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引用
TyDraniu
  • Top 25 Contributor
380 個解決方法 2119 個答案

有幫助的回覆

The contentDocument property on frames now returns null if the caller doesn’t subsume the document. This change affects the contentDocument property on the <frame>, <iframe> and <object> elements as well as the getSVGDocument method on the <embed>, <iframe> and <object> elements.

The contentDocument property on frames now returns null if the caller doesn’t subsume the document. This change affects the contentDocument property on the <frame>, <iframe> and <object> elements as well as the getSVGDocument method on the <embed>, <iframe> and <object> elements.
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提出問題者

I am new to javascripts. Can you please give me an example?

I am new to javascripts. Can you please give me an example?
這篇文章有幫助嗎?
引用
Matthew Thomas
  • Top 25 Contributor
13 個解決方法 90 個答案

Oh, I get it. Of course, you want to access the external file and not the "Your browser doesn't support SVG" text...

You are still on an old version of the browser.

Do you have this example hosted somewhere that we can take a look at? This object link is not going to work if you open the html file directly (i.e. with file://). Are you serving this up on a local server?

Oh, I get it. Of course, you want to access the external file and not the "Your browser doesn't support SVG" text... You are still on an old version of the browser. Do you have this example hosted somewhere that we can take a look at? This object link is not going to work if you open the html file directly (i.e. with file://). Are you serving this up on a local server?

由 Matthew Thomas 於 修改

這篇文章有幫助嗎?
引用

提出問題者

I am not using a server. I am directly opening the index.html. Is this a security issue that has been fixed in latest version of Firefox?

I am not using a server. I am directly opening the index.html. Is this a security issue that has been fixed in latest version of Firefox?
這篇文章有幫助嗎?
引用
Matthew Thomas
  • Top 25 Contributor
13 個解決方法 90 個答案

選擇的解決方法

Zaak said

I am not using a server. I am directly opening the index.html. Is this a security issue that has been fixed in latest version of Firefox?

Oh, ok. That is the issue then. This is not supposed to work if you're just using file://. I guess it was probably added. It won't affect you if you actually publish the project though.

You can serve up the files locally with a variety of solutions. This one looks good if you are using node: https://github.com/http-party/http-server

I usually use python, so I run "python -m http.server" in the directory where all my files are. There are many solutions to serve up your files easily. I would highly recommend this as there are many more things that simply won't work when you open the html file directly.

''Zaak [[#answer-1289168|said]]'' <blockquote> I am not using a server. I am directly opening the index.html. Is this a security issue that has been fixed in latest version of Firefox? </blockquote> Oh, ok. That is the issue then. This is not supposed to work if you're just using file://. I guess it was probably added. It won't affect you if you actually publish the project though. You can serve up the files locally with a variety of solutions. This one looks good if you are using node: https://github.com/http-party/http-server I usually use python, so I run "python -m http.server" in the directory where all my files are. There are many solutions to serve up your files easily. I would highly recommend this as there are many more things that simply won't work when you open the html file directly.
這篇文章有幫助嗎? 1
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提出問題者

Thank you for your help.

I'll update you tomorrow if this solves my problems.

Thank you for your help. I'll update you tomorrow if this solves my problems.
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提出問題者

I can confirm that directly opening the index.html in a web browser (using file://) no longer work.

As per Mathew's suggestion, I used local webserver by following method: 1. Ensure python is installed 2. Open Command prompt 3. Change directory to location of index.html in the Command prompt 4. Typing "python -m http.server" to start the server 5. Type "localhost:8000" in the Firefox web browser

I can confirm that directly opening the index.html in a web browser (using file://) no longer work. As per Mathew's suggestion, I used local webserver by following method: 1. Ensure python is installed 2. Open Command prompt 3. Change directory to location of index.html in the Command prompt 4. Typing "python -m http.server" to start the server 5. Type "localhost:8000" in the Firefox web browser
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