![]() Looked at the Apache error logs, access logs and the Magento2 exception system and debug logs. Because I always thought it was my problem of rendering, Waste my hours. Violation Forced reflow while executing JavaScript took 107ms Violation Forced reflow while executing JavaScript took 46ms Violation Forced reflow while executing JavaScript took 38ms 4. But as soon as you comment, There's no card ï¼ï¼ï¼ï¼ï¼ Find the killerĬomment out el-radio Rear no card, It makes me very angry and crazy. : Violation Forced reflow while executing JavaScript took ms Violation Forced reflow while executing JavaScript took ms.įinally, in the process of getting to the bottom of the matter, I found me v-for äº el-radio, There seems to be no problem at all, It's all conventional usage. We can't cut off our hands if they're sick, right, We need to find out where the problem is. On my first note, I found, As long as you delete the list data, you won't get stuck, But that won't work. Secondly, judge whether it is a data rendering problem, Because I pulled out several components and v-for To loop render data. Until my data reaches 500 above, Oh, my God, Really dull ï¼ï¼ Start troubleshootingįirst, determine whether it is used frequently v-if And so on, I repeated comments one by one and found that it was not his problem. At first I felt a little stuck, But I think it's unreasonable to have such a small amount of data, so I left it alone. ![]() The running animation represents the responsiveness of the JavaScript thread. Scroll the page, observing the latency associated with each event. I would tell you that a high percentage of the. Consider using MutationObserver to make the page more responsive. Its simply a warning that a method that manipulated the DOM forced it to recalculate (thats the reflow). In the list 300 topic, Each topic has 4 An option. Scroll jank due to touch/wheel handlers demo View on GitHub Instructions The log shows the touch/wheel events which block scrolling (have cancelabletrue). Violation Forced reflow while executing JavaScript took 35ms Violation Forced reflow while executing JavaScript took 38ms Advertisement RAW Paste Data Copied Violation Added synchronous DOM mutation listener to a DOMSubtreeModified event. I wrote a list of test questions, There are. I know something about forced reflow What happened to me That is, where the operation Cause page reflow and get stuck You can read more about the asynchronous nature of JavaScript here.Let's translate this question in Chinese ï¼ Note that thereâs at least one reflow the initial layout of the page parts of the screen will need to be updated, either because of changes in. Promise.resolve().then(functionToRunVerySoonButNotNow) This is called a reflow, or layout, or layouting. Violation Forced reflow while executing Javascript in console when tooltip appear on slider handle. This one is not available natively in IE, but there are polyfills available. SetTimeout(functionToRunVerySoonButNotNow) If needed, it should always be possible to do (3). ![]() (1) and (2) may be difficult or impossible, but it's sometimes really easy and should be your first attempts. ![]() Once you've found some code that's taking a long time (50ms is Chrome's threshold), you have a couple of options:Ĭut out some/all of that task that may be unnecessaryįigure out how to do the same task fasterÄivide the code into multiple asynchronous steps If you want to get more advanced, you could also use Chrome's profiler, or make use of a benchmarking library like this one.
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