小编Max*_*rld的帖子

我正在运行npm install但是它给了我一个错误.我还尝试在更新之前运行以下命令.$ npm安装npm,我也更新了graceful-fs.

$ npm install -g graceful-fs
graceful-fs@4.1.3 C:\Users\RDY672\AppData\Roaming\npm\node_modules\graceful-fs

错误如下:

$ npm install -g bower@1.3.12
npm WARN deprecated graceful-fs@3.0.8: graceful-fs version 3 and before will fail on newer node releases. Please update to graceful-fs@^4.0.0 as soon as possible.
npm WARN deprecated graceful-fs@2.0.3: graceful-fs version 3 and before will fail on newer node releases. Please update to graceful-fs@^4.0.0 as soon as possible.
npm WARN deprecated npmconf@2.1.2: this package has been reintegrated into npm and is now out of date with …

我通过将我的文本转换为小写并将其索引与-1进行比较来进行比较,以便为特定字段赋予一些值ReactJS,但我在JavaScript控制台中收到此错误:

未捕获的TypeError:props.filterText.toLowerCase不是函数

var props = this.props;
var rows = this.props.episodes
    .filter(function(episode){
        return episode.title.toLowerCase().indexOf(props.filterText.toLowerCase()) > -1;
    })
    .map(function(episode){
       return <EpisodeRow key={episode.title} episode={episode}/>
    });