javascript - Help! When playing a video on a web page, there is only sound but no picture. How do you know whether the video is encoded as H264 or MPEG4 when uploading a video file on the web page?

Update question: After testing, neither flash nor video tags can play mp4 files encoded in MPEG4. Now I want t...

From [HTMLdiscussion group] 2017-05-24 11:36:12 0  2  1240

javascript - When the bootstrap modal pops up, the mask layer is opaque under IE8

I see that the source code of bootstrap has processing for lower versions of IE, but when I switch to IE8, the...

From [HTMLdiscussion group] 2017-05-24 11:36:10 0  1  949

html5 - Can HTML or JS dynamically change .css attributes?

For example, is it possible to change the attribute value of *.css or <style> based on the input...

From [HTMLdiscussion group] 2017-05-24 11:36:09 0  2  1024

javascript - How to do local div scrolling in jq?

<style>.top , .bottom{height:130px;background:#000;} .center{height:400px;overflow:hidden;positi...

From [HTMLdiscussion group] 2017-05-24 11:36:08 0  3  800

html5 - angular2 click event from the current page, route to the current page, the page does not refresh

Click on another user in a user's homepage to jump to the user's homepage, that is, route from the current pag...

From [HTMLdiscussion group] 2017-05-24 11:36:07 0  1  1254

html - css navigation bar is blurred, the navigation bar is fixed, and the page below is blurred as the page slides. How to achieve this?

After searching for a long time on the Internet, I couldn't find a solution that can dynamically affect the pa...

From [HTMLdiscussion group] 2017-05-24 11:36:02 0  2  1152

In the html-css file, some styles are not called. Is there any tool to delete this part of the content that is not called?

For example: html content: {code...} In css file: {code...} There is no tool or plug-in (vscode, sublime text ...

From [HTMLdiscussion group] 2017-05-24 11:36:01 0  1  945

javascript - gulp+webpack+vue wants to make a family bucket. Do you have any introduction or article example code?

The vue official website has the webpack packaging that comes with the vue-cli scaffolding, but I want gulp to...

From [HTMLdiscussion group] 2017-05-24 11:36:00 0  1  731

javascript - forEach about JS array cannot modify the value of array element

{code...}

From [HTMLdiscussion group] 2017-05-24 11:35:57 0  1  647

html5 - There is an error when packaging Android apk package in HBuilder. I don't know the reason.

When packaging the Android apk package in HBuilder, the MUI framework is not used, nothing is placed in unpack...

From [HTMLdiscussion group] 2017-05-24 11:35:56 0  1  1098

Can cross-domain download files with a tag be renamed?

Can cross-domain download files with a tag be automatically renamed when downloading is clicked? The file is n...

From [HTMLdiscussion group] 2017-05-23 09:26:40 0  2  1922

html5 - video control bar different on chrome

I also use the video tag. The control bar on my own web page looks like this. The full screen and total time a...

From [HTMLdiscussion group] 2017-05-19 10:48:12 0  1  1336

html - vue: src does not display images under IE (9-11)

In other browsers, which are all good, IE is like this. The image address is gone.

From [HTMLdiscussion group] 2017-05-19 10:48:06 0  1  1023

html5 - I encountered a problem with caching data during the front-end interview. I came to the forum to ask for advice.

During the interview today, the interviewer asked me if a page calls an interface in the background to get an ...

From [HTMLdiscussion group] 2017-05-19 10:48:05 0  3  924

javascript - The scroll bar covers the hover popup layer?

After adding the scroll bar, the scroll bar covers the pop-up layer on the right side and cannot be seen. Afte...

From [HTMLdiscussion group] 2017-05-19 10:47:52 0  4  864