The v-show directive is used to dynamically hide or display elements in Vue.js. Its usage is as follows: The syntax of the v-show directive: v-show="booleanExpression", booleanExpression is a Boolean expression that determines the element Whether to display. The difference with v-if: v-show only hides/shows elements through the CSS display property, which optimizes performance; while v-if conditionally renders elements and recreates them after destruction.
Usage of v-show in Vue.js
v-show is one of Vue.js Directive for dynamically hiding or showing elements. It is similar to the v-if directive, but has a few key differences.
Usage
The syntax of the v-show instruction is as follows:
<code>v-show="booleanExpression"</code>
Among them, booleanExpression
is a Boolean expression, which Determines whether the element should be displayed. If booleanExpression
is true, the element will be shown; if false, the element will be hidden.
The difference between v-if
The most important difference between v-show and v-if instructions is:
display
properties, which is more efficient than re-rendering and destroying elements in v-if. Example
To use v-show, simply add the directive to the element you want to hide or show, like this:
<code class="html"><div v-show="show"> <!-- 元素内容 --> </div></code>
When the show
variable is true, the element will be displayed; when show
is false, the element will be hidden.
Summary
v-show is a powerful directive for dynamically hiding or showing elements. It's more efficient than v-if because it doesn't re-render or destroy elements. v-show is ideal if you need to show or hide elements while keeping the DOM structure intact.
The above is the detailed content of How to use v-show in vue. For more information, please follow other related articles on the PHP Chinese website!