如果您的状态中包含数组,并且该数组包含对象,那么如何轻松地使用更改一个对象来更新状态?
例如,从React教程修改:
例如,从React教程修改:
var CommentBox = React.createClass({
getInitialState: function() {
return {data: [
{ id: 1, author: "john", text: "foo" },
{ id: 2, author: "bob", text: "bar" }
]};
},
handleCommentEdit: function(id, text) {
var existingComment = this.state.data.filter({ function(c) { c.id == id; }).first();
var updatedComments = ??; // not sure how to do this
this.setState({data: updatedComments});
}
}