reactjs - Get refs via function call -


i'm trying replicate react code this official guide:

  render: function() {     return <textinput ref={(c) => this._input = c} />;   },   componentdidmount: function() {     this._input.focus();   },

basically, i'm using es5 , tried this:

 componentdidmount: function() {         this.searchbox.focus();     },      render: function() {         return (             <input type="text" ref={function(c) {this.searchbox = c}} />         );     }

but got error saying:

uncaught typeerror: cannot read property 'focus' of undefined

isn't code above supposed same es6 version? don't why it's not working. in case you're interested in full code, here is: https://jsfiddle.net/xpd85ehx/

es5 , es6 arrow notations use different this.

specifically, using arrow notation, this lexically bound surrounding function (so refers class).

using es5 need bind this function.


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