这篇文章主要介绍vue.js计算属性指的是什么，文中介绍的非常详细，具有一定的参考价值，感兴趣的小伙伴们一定要看完！

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什么是计算属性（Computed ）?

计算属性看起来就像Vue中的数据（data）属性，但是我们可以执行一些算术和非算术任务。

在上面的代码中，我们创建了两个数据属性firstName和lastName，并将其插入到template中。

如果你查看我们的template，我们在{{}}花括号中添加了Full Name逻辑。

例子

如何创建第一个计算属性的示例。

计算属性在计算属性对象中声明。

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请求信息 : 2026-08-31 19:09:24 HTTP/1.1 GET : /article/ihjdce.html
运行时间 : 7.4081s ( Load:0.0062s Init:3.9637s Exec:3.4290s Template:0.0092s )
吞吐率 : 0.13req/s
内存开销 : 2,222.04 kb
查询信息 : 12 queries 5 writes 
文件加载 : 36
缓存信息 : 0 gets 0 writes 
配置加载 : 130
会话信息 : SESSION_ID=r1072tl9a8c3ulm3movvsao4f0
    
    
        

    

	
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[ app_init ] --START--
Run Behavior\BuildLiteBehavior [ RunTime:0.000005s ]
[ app_init ] --END-- [ RunTime:0.000030s ]
[ app_begin ] --START--
Run Behavior\ReadHtmlCacheBehavior [ RunTime:0.000272s ]
[ app_begin ] --END-- [ RunTime:0.000289s ]
[ view_parse ] --START--
[ template_filter ] --START--
Run Behavior\ContentReplaceBehavior [ RunTime:0.000052s ]
[ template_filter ] --END-- [ RunTime:0.000074s ]
Run Behavior\ParseTemplateBehavior [ RunTime:0.006356s ]
[ view_parse ] --END-- [ RunTime:0.006383s ]
[ view_filter ] --START--
Run Behavior\WriteHtmlCacheBehavior [ RunTime:0.000151s ]
[ view_filter ] --END-- [ RunTime:0.000165s ]
[ app_end ] --START--
    
    
        

    

	
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 [ SQL语句 ] : SELECT `id`,`pid`,`navname` FROM `cx_nav` WHERE ( id= ) LIMIT 1  
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 [ SQL语句 ] : SELECT `id`,`navname` FROM `cx_nav` WHERE ( id= ) LIMIT 1  
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 [ SQL语句 ] : SELECT `id`,`navname` FROM `cx_nav` WHERE ( pid= ) 
[8] Undefined index: pid /www/wwwroot/tsicrk.com/App/Home/Controller/ArticleController.class.php 第 47 行.
[8] Undefined index: db_host /www/wwwroot/tsicrk.com/ThinkPHP/Library/Think/Db.class.php 第 120 行.
[8] Undefined index: db_port /www/wwwroot/tsicrk.com/ThinkPHP/Library/Think/Db.class.php 第 121 行.
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