我想将数据推送到this.organizationIDList. 推送时出现未定义错误。如何将数据推送到该变量？
class NewsScreen extends React.Component {
render() {
this.organizationIDList = [];
this.organizations.forEach(function (organization) {
this.organizationIDList.push(organization.id);
});
}
}
使用箭头功能
this.organizations.forEach((organization) => {
this.organizationIDList.push(organization.id);
});
或者传递this给接受一个的forEachthisArg
this.organizations.forEach(function (organization) {
this.organizationIDList.push(organization.id);
}, this);
上面的代码也可以写成：
this.organizationIdList = this.organizations.map(organization =>organization.id);
本文收集自互联网，转载请注明来源。
如有侵权，请联系 [email protected] 删除。
我来说两句