JSX部分看起来像这样:
<span className="header_srh_i_c" onMouseDown={this.toggleSearchbar}> <i className="fa fa-search" id="searchButton" name="searchButton" /> </span>
同一组件中的函数如下所示:
toggleSearchbar(event){ const eventType = event.type; if(this.state.showSearch && this.props.q && length(this.props.q) > 0){ this.toggleSearching(); }else{ console.log("state after",this.state.showSearch) //false this.setState({showSearch:!this.state.showSearch},function (event) { console.log("state after",this.state.showSearch) //false }) } }
执行后,国家仍然是错误的事件
this.setState({showSearch:!this.state.showSearch},function (event) { console.log("state after",this.state.showSearch) //false })
但是,如果我使用onClick而不是onMouseDown,它的工作正常
解决方法
尝试
this.setState(prev => ({showSearch: !prev.showSearch}),function(){.....})
代替
this.setState({showSearch:!this.state.showSearch},this.state.showSearch) //false })