11/10/2016 · In my current case, I iterate through properties (easy with v-for) without necessarily needing to express in the template how the iterator is implemented. Since v-for has to iterate anyway, extending it to keep a boolean (empty/notempty) and rendering an ’empty’ branch if the loop content was never touched after iteration should be helpful, straightforward and more performant than calling.
If you want to show the div when archiveNote is NOT empty , then it would be: v-if=archiveNote !== null && archiveNote !== ” Otherwise you’re telling Vue to show it only if it is null or ”. An alternate way to do this more comprehensively and concisely is with the double bang: v-if=!!archiveNote It evaluates the following to false: false; null, What problem does this feature solve? i want to generate two objects of dom( ) per single object What does the proposed API look like? empty v-for=(some,index) in ob v.
12/21/2016 · The v-for directive only applies to the element that it’s attached to. If multiple items should repeat with the v-for directive, we should wrap the elements in a element. {{ item.name }} {{ item.price }} Buy V-for with Objects, This article really is about the key attribute which is now strongly suggested (or can be required by a linter) on all usages of v-for and some of the issues that you may run into if you go the common route of using the index.I’d recommend reading the actual Vue documentation for it as either a follow-up or some background knowledge.. The background of why we are now required to include a …
Iterating Over Items in Vue.js With V-for | DigitalOcean, Iterating Over Items in Vue.js With V-for | DigitalOcean, List Rendering — Vue.js, List Rendering — Vue.js, The most concise screencasts for the working developer, updated daily. There’s no shortage of content at Laracasts. In fact, you could watch nonstop for days upon days, and still not see everything!, You can directly use v-for on a custom component, like any normal element: In 2.2.0+, when using v-for with a component, a key is now required. However, this won’t automatically pass any data to the component, because components have isolated scopes of their own.
Note that the elements are still efficiently re-used, because they don’t have key attributes.. v-show. Another option for conditionally displaying an element is the v-show directive. The usage is largely the same: Hello! The difference is that an element with v-show will always be rendered and remain in the DOM; v-show only toggles the display CSS …
7/3/2017 · The following code shows how I use v-for with simple arrays that have single-item non-object values. It looks problematic, though — since I’m using array items as keys, and thereby (I think?) negating the value of a key. I’d like to know how people use v-for with such simple arrays. I think these are the options I have. The first option means there’s no place for simple arrays. What …
