The async attribute is used to load JavaScript files asynchronously, meaning that the file will be downloaded and executed while the rest of the page continues to load. This is useful for non-essential scripts such as tracking codes or ads because they don't block the rendering process. Howeve...
defer doesn't have any meaning in dynamic script loading. But it doesn't need to, because of the new "ordered async" (async=false) that IS spec'd and now in almost all browsers' current releases. What's confusing though is that you have to use defer when you're dealing with markup,...
So it turns out one can defer scripts, meaning give the browser a hint that a script will not mess up with the page right now, so it won't affect the rendering and can be delayed for later. This could give you increased performance during the initial page load and rendering, since you...
NameMeaningDefault valueExample value container The scrolling container of the elements in the elements_selector option. document document.querySelector('.scrollPanel') elements_selector The CSS selector of the elements to load lazily, which will be selected as descendants of the container object. ...
APromiseis in one of these states: pending: initial state, neither fulfilled nor rejected. fulfilled: meaning that the operation completed successfully. rejected: meaning that the operation failed. await - JavaScript | MDN https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/...
in this way, due to the newShopify section rendering API– this works awesome when combined with theintersectional observer APImeaning you now get that native app feel we mentioned before – true load on scroll with support for third-party apps and code snippets, all in your mobile web ...
APromiseis in one of these states: pending: initial state, neither fulfilled nor rejected. fulfilled: meaning that the operation completed successfully. rejected: meaning that the operation failed. await - JavaScript | MDN https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/...
zco suppose it's possible that all operations will go wrong, so the first return-value always be error,the second one is the exact result returned by yourself.Error in different place has different meaning,we can deal with them in different way. But sometimes ,we don't want to dealing wi...
Problem The download button currently expects its data to be available when declaring the button. If data needs to be read from disk (or worse: compiled multiple disk sources), this can make the app needlessly slow. In my app, the data d...
NameMeaningDefault valueExample value container The scrolling container of the elements in the elements_selector option. document document.querySelector('.scrollPanel') elements_selector The CSS selector of the elements to load lazily, which will be selected as descendants of the container object. ...