v-if|vue v if true run method

v-if,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 destroyed and re-created during toggles. v-if is also lazy : if the condition is false on initial render, it will not do anything - the conditional block . Tingnan ang higit paThe directive v-ifis used to conditionally render a block. The block will only be rendered if the directive's expression returns a truthy value. Tingnan ang higit paThe v-else-if, as the name suggests, serves as an "else if block" for v-if. It can also be chained multiple times: Similar to v-else, a v-else-if element must immediately follow a v-if or a v-else-ifelement. Tingnan ang higit pa

You can use the v-else directive to indicate an "else block" for v-if: A v-else element must immediately follow a v-if or a v-else-ifelement - otherwise it will not be recognized. Tingnan ang higit pa

Because v-if is a directive, it has to be attached to a single element. But what if we want to toggle more than one element? In this . Tingnan ang higit pa

v-ifLearn how to use the v-if directive in Vue to create HTML elements depending on a condition in a simple and elegant way. See examples of comparison checks, return .

Learn how to use the v-if directive to conditionally render a block based on a truthy expression. See examples of v-if, v-else, v-else-if, v-show and key attributes.

了解如何使用 v-if、v-else、v-else-if 和 v-show 指令来条件性地渲染一块内容。比较 v-if 和 v-show 的区别和适用场景，以及 v-if 和 v-for 的优先级问题。

The key difference is that v-if conditionally renders elements and v-show conditionally displays elements. This means that v-if will actually destroy and recreate elements when the conditional is toggled. Meanwhile, v .

Learn how to use v-if and v-else directives to conditionally render html elements in Vue.js. See examples, syntax, and tips for using expressions, computed properties, and templates.

Learn how to use the v-if directive to conditionally render a block in Vue. See examples of v-if, v-else-if, v-else, and lifecycle hooks.

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.

Learn how to use v-if, v-else, v-else-if and v-show directives to conditionally render UI elements in Vue.js. See examples, differences and animations of v-if and v-show.Using "v-if, v-else-if, v-else", the false ones will be "rendered out" of the DOM entirely. Input: