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!, 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, 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!, I will teach you how to check object is empty or not and check array is empty or not in vuejs app. this post will help you to check object or array empty or not using v-if and array.length. If you are a using core jquery and you need to check array or object is empty or not then you can do it easily.
11/14/2016 · What is the best practice to see if an object is empty so I can call this computed property in a v-if? LinusBorg 15 November 2016 11:41 #2 Object .keys(yourObject).length === 0, 1/14/2015 · v-if: Conditionally insert / remove the element based on the truthy-ness of the binding value. So you just need to think of a javascript expression that will evaluate to false if the array is empty …
The logic behind v-if and v-show is that they simply work based on the value’s truthiness in JavaScript. An empty object is truthy, that’s how the language works. Changing that would break cases where users expect an empty object to work. In my opinion explicitly checking wether it is empty .
So prefer v-show if you need to toggle something very often, and prefer v-if if the condition is unlikely to change at runtime. v-if with v-for. Using v-if and v-for together is not recommended. See the style guide for further information. When used together with v-if , v-for has a higher priority than v-if . See the list rendering guide for details.
12/22/2017 · Vue.JS check if Object or Array is empty We can use JavaScript .length property to get the length of object or array in VueJS. Here we are going to create one simple example to demonstrate the use of length property in VueJS.
Empty refers to an unitialised variant, i.e. one that has never been assigned a value, or has explicitly been assigned the value Empty . Do you want to know if it contains a zero-length string? If so you can use If Len(var)=0 Then… You do also hint about arrays – are you looking for an empty array? Seeing some code would probably help.
