preload | 预加载前端需要的资源，包括图片、CSS、字体

I'm trying to play a sound just once when a marker is detected with the A-frame and AR.JS libraries.

I'm trying the code lines below but the sound is playing indefinite.

I am trying to create an HTML page that includes images that play sounds on-click. The first click for every image works great, but subsequent clicks don't always work; they seem to require some refractory load time again?

I have three audio files: "two.mp3" "five.mp3" and "one.mp3". I also have three different colored circle images that the audio files are assigned to. My code is based on the Stack Overflow answer here.

Here is my code:

How SSL works is well know as it's quite widely used and described well every where. In short - SSL involves

1. Verifying server authenticity by client by verifying the servers X.509 certificate.
2. Then arriving at a symmetric key using diffie-hellman key exchange algorithm.

But I am not sure what happens withsecurity.protocol=SASL_SSL. Clients and Server communication of few technologies like Kafka etc rely on this security protocol as one of the option. Here I am worried about the point 1 above. If i get a wrong broker address (as a trick ) from some one, does SASL_SSL verify the server certificate or not is my question. If it does, then I can be sure that the received broker is not genuine and my application will not publish or subscribe to messages from this server and my data is safe.

Edit 1: Following @steffen-ullrich answer and comments And little more dig, i see below. Looks like the certificate validation is happening when used through chrome and probably its loaded in the cacerts too. So the java code is able to authenticate the server.. so seems ok..

Edit 2: Right the certificates DST and ISRG are preloaded in the JDK 11 cacerts, so the client is able to authenticate the server as commented by Stephen.

as the title says I have multiple buttons which they have data-id. I want to open fancybox modal by getting the clicked buttons data-id. Each element on click will open their own modal. I can't use class selector because this function is attached to somewhere else, and I know that $(this) here doesn't mean clicked element.

Thank you for your help.

JQuery

I have an executable that by default uses EGL and SDL 1.2 to handle graphics and user input respectively. Using LD_PRELOAD, I have replaced both with GLFW.

This works normally unless the user has installed the Wayland version of GLFW, which depends on EGL itself. Because all the EGL calls are either stubbed to do nothing or call GLFW equivalents, it doesn't work (ie. eglSwapBuffers calls glfwSwapBuffers which calls eglSwapBuffers and so on). I can't remove the EGL stubs because then it would call both EGL and GLFW and the main executable is closed-source so I can't modify that.

Is there any way to make LD_PRELOAD affect the main executable but not GLFW? Or any other solution to obtain the same effect?

I made a simplified example to demonstrate the problem.

Main Executable:

I have a Nuxt-based gsap (greensock) animation, where I'm trying to start that animation only when an audio track that I'm loading is available.

The HTML for the audio:

I'm trying to write some vanilla javascript code to do barcode scanning from my website, however I can't even get past the first step using the Quagga javascript library. My code is currently this:

I have a problem with playing audio when I press or click a button.

Drum Machine

It seems like my audio has a delay but I put a audio.currentTime = 0, so I don't know what's going on.

Here is my JS:

Here is a crude example of the type of code I would like to use libtool's libltdl dlpreopening with:

https://github.com/EmmaJaneBonestell/dlopen-sample

I wish to be able to rewrite various projects that use libdl functions ( dlopen, dlsym, etc ), to instead use libtool's libltdl dlpreopening/preloading mechanism. From libtool's documentation, it will instead link the objects at compile time, resulting in truly static executables. It was intended for systems that do not support dynamic loading.

If you use it to compile and link these objects, libtool will run some of its scripts, and create the necessary data structures, and I believe perform mangling and demangling, to allow for duplicate symbol names.

Even after looking at the examples in libtool's source code, reading its entire documentation, and looking at relevant tests from the test-suite (e.g. tests 118 & 120), I've been unable to do so.

Outside of libtool itself, there is essentially no mention of this functionality anywhere I could find. I did manage to see it used in a too-complex-for-me manner in Graphviz, but there's little documentation on that either.

I'm really not much of a programmer, more of a tinkerer. It's easy enough for me to use libltdl for a wrapper for standard dlopen/dlsym.

I think my main issue is figuring out how I can return a proper handle for a preopened object, though I may be doing other things incorrectly.

The documentation states that lt_dlopen can work on preloaded static modules, but it doesn't seem to accept any possible reference to it I could imagine.

I would also prefer not to have to even invoke libtool, but c'est la vie.

I didn't bother including any of what I've tried code wise (on the example) because I've tried such a mess of things that I feel it would really just be confusing to show it.

Current libtool documentation: https://www.gnu.org/software/libtool/manual/libtool.html