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// source https://jsbin.com
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<!DOCTYPE html> | |
<html> | |
<head> | |
<meta charset="utf-8"> | |
<meta name="viewport" content="width=device-width"> | |
<title>JS Bin</title> | |
</head> | |
<body> | |
<script src="https://cdnjs.cloudflare.com/ajax/libs/react/16.7.0-alpha.2/umd/react.development.js"></script> | |
<script src="https://cdnjs.cloudflare.com/ajax/libs/react-dom/16.7.0-alpha.2/umd/react-dom.development.js"></script> | |
<div id="app"></div> | |
<script id="jsbin-javascript"> | |
"use strict"; | |
var _slicedToArray = (function () { function sliceIterator(arr, i) { var _arr = []; var _n = true; var _d = false; var _e = undefined; try { for (var _i = arr[Symbol.iterator](), _s; !(_n = (_s = _i.next()).done); _n = true) { _arr.push(_s.value); if (i && _arr.length === i) break; } } catch (err) { _d = true; _e = err; } finally { try { if (!_n && _i["return"]) _i["return"](); } finally { if (_d) throw _e; } } return _arr; } return function (arr, i) { if (Array.isArray(arr)) { return arr; } else if (Symbol.iterator in Object(arr)) { return sliceIterator(arr, i); } else { throw new TypeError("Invalid attempt to destructure non-iterable instance"); } }; })(); | |
var _React = React; | |
var useState = _React.useState; | |
var useEffect = _React.useEffect; | |
var useForm = function useForm(initialValue) { | |
var _useState = useState(initialValue); | |
var _useState2 = _slicedToArray(_useState, 2); | |
var field = _useState2[0]; | |
var setField = _useState2[1]; | |
var onFieldChange = function onFieldChange(evt) { | |
var val = evt.target.value; | |
setField(val); | |
}; | |
return [field, onFieldChange]; | |
}; | |
var App = function App(props) { | |
var _useForm = useForm(""); | |
var _useForm2 = _slicedToArray(_useForm, 2); | |
var name = _useForm2[0]; | |
var setName = _useForm2[1]; | |
useEffect(function () { | |
return console.log("Name ==> " + name); | |
}); | |
return React.createElement("input", { value: name, placeholder: "name", onChange: setName }); | |
}; | |
ReactDOM.render(React.createElement(App, { name: "Velosity" }), document.getElementById("app")); | |
</script> | |
<script id="jsbin-source-javascript" type="text/javascript">const{useState,useEffect}=React | |
const useForm=function(initialValue){ | |
const[field,setField]=useState(initialValue) | |
const onFieldChange=function(evt){ | |
let val = evt.target.value | |
setField(val) | |
} | |
return [field,onFieldChange] | |
} | |
const App = function(props){ | |
const[name,setName]=useForm("") | |
useEffect(()=>console.log("Name ==> "+name)) | |
return ( | |
<input value={name} placeholder="name" onChange={setName}/> | |
) | |
} | |
ReactDOM.render(<App name={"Velosity"}/>,document.getElementById("app"))</script></body> | |
</html> |
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"use strict"; | |
var _slicedToArray = (function () { function sliceIterator(arr, i) { var _arr = []; var _n = true; var _d = false; var _e = undefined; try { for (var _i = arr[Symbol.iterator](), _s; !(_n = (_s = _i.next()).done); _n = true) { _arr.push(_s.value); if (i && _arr.length === i) break; } } catch (err) { _d = true; _e = err; } finally { try { if (!_n && _i["return"]) _i["return"](); } finally { if (_d) throw _e; } } return _arr; } return function (arr, i) { if (Array.isArray(arr)) { return arr; } else if (Symbol.iterator in Object(arr)) { return sliceIterator(arr, i); } else { throw new TypeError("Invalid attempt to destructure non-iterable instance"); } }; })(); | |
var _React = React; | |
var useState = _React.useState; | |
var useEffect = _React.useEffect; | |
var useForm = function useForm(initialValue) { | |
var _useState = useState(initialValue); | |
var _useState2 = _slicedToArray(_useState, 2); | |
var field = _useState2[0]; | |
var setField = _useState2[1]; | |
var onFieldChange = function onFieldChange(evt) { | |
var val = evt.target.value; | |
setField(val); | |
}; | |
return [field, onFieldChange]; | |
}; | |
var App = function App(props) { | |
var _useForm = useForm(""); | |
var _useForm2 = _slicedToArray(_useForm, 2); | |
var name = _useForm2[0]; | |
var setName = _useForm2[1]; | |
useEffect(function () { | |
return console.log("Name ==> " + name); | |
}); | |
return React.createElement("input", { value: name, placeholder: "name", onChange: setName }); | |
}; | |
ReactDOM.render(React.createElement(App, { name: "Velosity" }), document.getElementById("app")); |
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