problem description 1, two sibling components are introduced into a page. Show-relation and echart-line, communicate values and events through bus. first of all: there is an input, in show-relation to enter a word, the onblur event sends the request,...
1. There are three components -1-ordering component -2-ordered component -3-button component (button for adding meals) 2. Logic function -1-Click the add button in the ordering component to display 3 in the click. There is a code -1-order component: ...