在写项目的时候遇到了一个报错问题,虽然功能是正常运行,chrome的提示是:[Vue warn]: Avoid mutating a prop directly since the value will be overwritten whenever the parent component re-renders. Instead, use a data or computed property based on the prop's value. Prop being mutated: "go…
报错:Avoid mutating a prop directly since the value will be overwritten whenever the parent component........ 原因:所有的 prop 都使得其父子 prop 之间形成了一个单向下行绑定:父级 prop 的更新会向下流动到子组件中,但是反过来则不行.(父组件更新,子组件中的prop值也会更新,但子组件不能修改由父组件传递过来的值) 不能直接对父组件传来的值进行双向绑定,要先子组件里定义新的变量…
使用mysql5.7版本的mysqldump命令执行备份mysql8.0版本的数据库时会报错: mysqldump: Couldn't execute 'SET SQL_QUOTE_SHOW_CREATE=1/*!40102 ,SQL_MODE=concat(@@sql_mode, _utf8 ',NO_KEY_OPTIONS,NO_TABLE_OPTIONS,NO_FIELD_OPTIONS') */': Variable 'sql_mode' can't be set to the valu…
mysql-connector-java升级到6.0以后启动tomcat报错 java.sql.SQLException: The server time zone value '�й���ʱ��' is unrecognized or represents more than one time zone. You must configure either the server or JDBC driver (via the serverTimezone configuration prop…
Linux安装Redis 6.0.5 ./install_server.sh报错 linux 安装Redis6.0.5时 进行到./install_server.sh时报错, This systems seems to use systemd. Please take a look at the provided example service unit files in this directory, and adapt and install them. Sorry! 解决方案: vi ./…
sysctl -P 报错解决办法问题症状修改 linux 内核文件 #vi /etc/sysctl.conf后执行sysctl -P 报错error: "net.bridge.bridge-nf-call-ip6tables" is an unknown keyerror: "net.bridge.bridge-nf-call-iptables" is an unknown keyerror: "net.bridge.bridge-nf-call-arp…
error: "net.bridge.bridge-nf-call-ip6tables" is an unknown keyerror: "net.bridge.bridge-nf-call-iptables" is an unknown keyerror: "net.bridge.bridge-nf-call-arptables" is an unknown key sysctl -P 报错解决办法问题症状修改 linux 内核文件 #vi /…
props是不能改变的 项目里遇到一个问题,就是props的组件内是不能改变,就像react中的props值也是不能改变的, 所以我在用的时候竟然忽略了这个点.真的要反省反省, 下面就是这个报错的问题: use a data or computed property based on the prop's value 如何双向绑定 我做的是一个弹框的组件让在父组件调用,关闭和开启 子组件:这样 <section class="app-body" v-if="myShar…
在使用vue进行组件开发的时候,遇到一个问题,父组件传递到子组件里面的值,如果在子组件里面进行改变 传递过来的"值",会报错: [Vue warn]: Avoid mutating a prop directly since the value will be overwritten whenever the parent component re-renders. Instead, use a data or computed property based on the prop's…
vue不推荐直接在子组件中修改父组件传来的props的值,会报错 [Vue warn]: Avoid mutating a prop directly since the value will be overwritten whenever the parent component re-renders. Instead, use a data or computed property based on the prop's value. Prop being mutated: "result&…
