[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: "openFlag" 此错误出现的原因是:vue设计是单向数据流,数据的
[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: 'mode' 这个错误是我在子组件里操作父组件传过来的值时报的错,看了官方文档说要
一.报错截图 [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: "zinum" 报错代码 <!DOCTYPE htm
@有两个含义:1,在参数里,以表明该变量为伪参数 ,在本例中下文里将用@name变量代入当前代码中 2,在字串中,@的意思就是后面的字串以它原本的含义显示,如果不加@那么需要用一些转义符\来显示一些特殊字符 举例1:(2) stringsql ="update Table1 set name =@name where ID = '1'";//未采用SqlParameter SqlParameter sp =newSqlParameter("@name","
静态方法里能够调用静态方法和静态变量,同一时候也能调用非静态方法和非静态变量. public class Test { public Test() {}; public Test(int i) {this.n = i;} public static int m = 5; public int n = 10; public void fun1() {System.out.println("非静态方法fun1");} public static void fun2() {System.ou
今天在做Vue的时候,子组件关闭的时候,报如下错误 报错:vue.esm.js?65d7:610 [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 m
