this.refs.something returns “undefined”

Check that you are not accessing ref before the child component has been mounted. E.g. it doesn’t work in componentWillMount. A different pattern which auto invokes ref related callback after the element has been mounted is this- <div ref={(elem)=>(console.log(elem))}/> You can use this notation to get mounted elements in deep nesting as well – <div … Read more

Hata!: SQLSTATE[HY000] [1045] Access denied for user 'divattrend_liink'@'localhost' (using password: YES)