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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 property of the element.. v-show doesn't support the element, nor does it work with v-else.. v-if vs. v-show . v-if is "real" conditional rendering because it ensures that event listeners and child components inside the conditional block are properly ...
Learn how to use the v-if directive in Vue to create HTML elements depending on a condition. See examples of comparison checks, logical operators, functions and exercises.
Yes, you can set complex condition. I suggest you to use Vue computed fields, so you will have better highlight (through Vue Devtools) of variables which use in v-if expression.I suppose that order is data field, so you can set computed fields like this: computed: { orderStatusId: function { // Write some checks is variable defined/undefined return this.order.order_products[key].statuses[0].id ...
With v-show, the button remains in the DOM, and Vue only updates its visibility using CSS, leading to quicker performance. Conclusion. Both v-if and v-show have their use cases: Use v-if for elements that are rarely shown to save memory and optimize performance. Use v-show for elements that toggle frequently to reduce DOM manipulation overhead.
For the second paragraph, I will use the v-else-if directive. This comes into play if the v-if directive's expression evaluates to false. The v-else-if directive also takes an expression, so this time I will check if the itemsInStock data property is greater than zero. Hurry up, there are just a few items left!
Learn how to use v-if to conditionally display elements in Vue.js templates. Compare v-if with v-show and v-else, and see examples and caveats.
文章浏览阅读1.3k次，点赞39次，收藏13次。v-if是 Vue 提供的一个条件渲染指令，当绑定到它的表达式返回true或者其他真值时，元素会被插入到 DOM 中；反之，如果表达式返回false或者假值，则该元素不会被渲染，也不会存在于 DOM 树中。这意味着v-if实现了真正的条件性渲染，而不是仅仅隐藏元素。
Learn how to use v-if, v-else, v-else-if and v-show directives to show or hide elements based on conditions in Vue.js. See examples, differences and performance tips for each directive.
An additional characteristic that sets the v-if directive apart from the v-show directive is its support for chaining adjacent conditional directives, such as v-else and v-else-if, for even more advanced conditional rendering.. We can use these directives to add a bit of interactivity to our application by including a text message that prompts the user to click the show form button when the ...
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 property of the element.. v-show doesn't support the element, nor does it work with v-else. # v-if vs v-show v-if is "real" conditional rendering because it ensures that event listeners and child components inside the conditional block are properly ...