vue中如何使用v-model完成组件间的通信
这篇文章主要介绍vue中如何使用v-model完成组件间的通信,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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在子组件中修改了值,父组件中立即更新。
vue中有一个很神奇的东西叫v-model,它可以完成我们的需求。
使用v-model过程中,父组件我们还是需要将子组件正常引入,只是传值方式改成了v-model
父组件
{{fatherText}}
//调用子组件,并将 fatherText传递给子组件
changeChildButton
子组件
{{fatherText}}
//正常使用fatherText的值,并添加一个修改值 的方法
在这里,报了一个错误,这是因为数据流是单向的,但是我们在这里,子组件不应该直接修改props里的值。
这里不能直接修改,所以我们需要迂回着修改,在子组件中定义一个自己的变量,再将props的值赋值到自己的变量,修改自己的变量是可以的。
子组件 - 修改props中的值
基本
文件
流程
错误
SQL
调试
请求信息 : 2026-10-23 00:09:47 HTTP/1.1 GET : /article/pjjjje.html 运行时间 : 0.7740s ( Load:0.0067s Init:0.0012s Exec:0.7568s Template:0.0094s ) 吞吐率 : 1.29req/s 内存开销 : 2,232.50 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=26i4kkcjk2fvh6uehb1deha145
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[ app_init ] --START-- Run Behavior\BuildLiteBehavior [ RunTime:0.000005s ] [ app_init ] --END-- [ RunTime:0.000035s ] [ app_begin ] --START-- Run Behavior\ReadHtmlCacheBehavior [ RunTime:0.000320s ] [ app_begin ] --END-- [ RunTime:0.000346s ] [ view_parse ] --START-- [ template_filter ] --START-- Run Behavior\ContentReplaceBehavior [ RunTime:0.000068s ] [ template_filter ] --END-- [ RunTime:0.000095s ] Run Behavior\ParseTemplateBehavior [ RunTime:0.006396s ] [ view_parse ] --END-- [ RunTime:0.006425s ] [ view_filter ] --START-- Run Behavior\WriteHtmlCacheBehavior [ RunTime:0.000156s ] [ view_filter ] --END-- [ RunTime:0.000170s ] [ app_end ] --START--
1064:You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ') LIMIT 1' at line 1
[ SQL语句 ] : SELECT `id`,`pid`,`navname` FROM `cx_nav` WHERE ( id= ) LIMIT 1 1064:You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ') LIMIT 1' at line 1
[ SQL语句 ] : SELECT `id`,`navname` FROM `cx_nav` WHERE ( id= ) LIMIT 1 1064:You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ')' at line 1
[ 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. [8] Undefined index: db_name /www/wwwroot/tsicrk.com/ThinkPHP/Library/Think/Db.class.php 第 122 行.
0.7740s