vue使用v-for時vscode報錯 Elements in iteration expect to have 'v-bind:key' directives

vue使用v-for時vscode報錯 Elements in iteration expect to have 'v-bind:key' directives Vue 2.2.0+的版本里，當在組件中使用v-for時，key是必須的錯誤提示:[vue-language-server ...