tps2015gh · October 8, 2018 18:41
diff --git a/_README b/_README
 this code I create + tested 
 on 
 https://codesandbox.io/s/14yyjqk1m3  

 it 's  OK  

 since 2018-10-09  
diff --git a/index.html b/index.html
 <!DOCTYPE html>
 <html lang="en">

 <head>
 	<meta charset="utf-8">
 	<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
 	<meta name="theme-color" content="#000000">
 	<!--
      manifest.json provides metadata used when your web app is added to the
      homescreen on Android. See https://developers.google.com/web/fundamentals/engage-and-retain/web-app-manifest/
    -->
 	<link rel="manifest" href="%PUBLIC_URL%/manifest.json">
 	<link rel="shortcut icon" href="%PUBLIC_URL%/favicon.ico">
 	<!--
      Notice the use of %PUBLIC_URL% in the tags above.
      It will be replaced with the URL of the `public` folder during the build.
      Only files inside the `public` folder can be referenced from the HTML.

      Unlike "/favicon.ico" or "favicon.ico", "%PUBLIC_URL%/favicon.ico" will
      work correctly both with client-side routing and a non-root public URL.
      Learn how to configure a non-root public URL by running `npm run build`.
    -->
 	<title>React App</title>
 </head>

 <body>
 	<noscript>
 		You need to enable JavaScript to run this app.
 	</noscript>
 	
  <div id="root"></div>
  <div id="section_form"></div>
  <div id="section_form2"></div>
  <div id="name_form"></div>
 	<!--
      This HTML file is a template.
      If you open it directly in the browser, you will see an empty page.

      You can add webfonts, meta tags, or analytics to this file.
      The build step will place the bundled scripts into the <body> tag.

      To begin the development, run `npm start` or `yarn start`.
      To create a production bundle, use `npm run build` or `yarn build`.
    -->
 </body>

 </html>
diff --git a/index.js b/index.js
 import React from "react";
 import ReactDOM from "react-dom";

 //==========================================
 class InputIdCard extends React.Component {
  constructor(props) {
    super(props);
    this.state = { value: "12234", parent: props.parent };
  }

  onOK100() {
    console.log("ON OK 100 ");
  }
  onChangeHandler(e) {
    console.log("InputIdCard.onChangeHanlder " + e.target.value);
    var val1 = e.target.value;
    var state = { value: val1 };
    this.setState(state);
    console.log(this.state.parent);
    if (this.state.parent === undefined) {
      return;
    }
    console.log(this.state.parent.getType());
    if (val1 === "1000") {
      this.state.parent.setFormColor("lightgreen");
      this.state.parent.setAllowSubmit();
    } else {
      this.state.parent.setFormColor("pink");
      this.state.parent.setDenySubmit();
    }
  }

  render() {
    //var style = { backgroundColor: 'lightyellow', maxLength: 13 }
    return (
      <div>
        <label for={this.props.name}>{this.props.label}: </label>
        <input
          className="form-control "
          type="text"
          parent={this.props.parent}
          value={this.state.value}
          name={this.props.name}
          id={this.props.name}
          placeholder={this.props.label}
          onChange={this.onChangeHandler.bind(this)}
        />
      </div>
    );
  }
 }
 //==========================================

 /**
 * @param:  action
 * @param:  name
 * @param:  title
 */
 class FormCheck extends React.Component {
  constructor(props) {
    super(props);
    var style1 = {
      border: "1px solid silver",
      padding: "3px",
      backgroundColor: props.bgcolor,
      borderRadius: "25px"
    };
    let bt1style = {
      display: "visible",
      disabled: "disabled"
    };
    this.state = { style: style1, bt1style: bt1style };
  }
  getType() {
    return "FormCheck";
  }

  setAllowSubmit() {
    let bt1s1 = Object.assign({}, this.state.bt1style);
    bt1s1.disabled = false;
    this.setState({ bt1style: bt1s1 });
  }
  setDenySubmit() {
    let bt1s1 = Object.assign({}, this.state.bt1style);
    bt1s1.disabled = true;
    this.setState({ bt1style: bt1s1 });
  }

  setFormColor(colorName) {
    console.log("> FormCheck setFormColor(" + colorName + ")");
    let style1 = Object.assign({}, this.state.style);
    style1.backgroundColor = colorName;
    this.setState({ style: style1 });
  }

  render() {
    return (
      <form
        action={this.props.action}
        method="POST"
        className="form"
        name={this.props.name}
        id={this.props.name}
        style={this.state.style}
      >
        <div>
          <h1>{this.props.title}</h1>
          <InputIdCard
            name="idcard"
            parent={this}
            onChange={this.props.onIdCardChange}
            label="กรุณาป้อนเลข ( ป้อน 1000 เพื่อแบันทึกได้ )"
          />
          <br />
          <input
            type="submit"
            name="bt1"
            style={this.state.bt1style}
            className="form-control btn btn-info "
            value="ค้นหา"
            disabled={this.state.bt1style.disabled}
          />
          <br />
          <br />
        </div>
      </form>
    );
  }
 }

 var onIdCardChange = function(e) {
  console.log("onIdCardChange(e) " + e.target);
 };
 //==========================================
 ReactDOM.render(
  <FormCheck onIdCardChange={onIdCardChange} name="f1" bgcolor="lightgrey" />,
  document.getElementById("section_form")
 );

 ReactDOM.render(
  <FormCheck onIdCardChange={onIdCardChange} name="f2" bgcolor="lightyellow" />,
  document.getElementById("section_form2")
 );

 ReactDOM.render(<InputIdCard />, document.getElementById("name_form"));
	this code I create + tested
	on
	https://codesandbox.io/s/14yyjqk1m3

	it 's OK

	since 2018-10-09
	<!DOCTYPE html>
	<html lang="en">

	<head>
	<meta charset="utf-8">
	<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
	<meta name="theme-color" content="#000000">
	<!--
	manifest.json provides metadata used when your web app is added to the
	homescreen on Android. See https://developers.google.com/web/fundamentals/engage-and-retain/web-app-manifest/
	-->
	<link rel="manifest" href="%PUBLIC_URL%/manifest.json">
	<link rel="shortcut icon" href="%PUBLIC_URL%/favicon.ico">
	<!--
	Notice the use of %PUBLIC_URL% in the tags above.
	It will be replaced with the URL of the `public` folder during the build.
	Only files inside the `public` folder can be referenced from the HTML.

	Unlike "/favicon.ico" or "favicon.ico", "%PUBLIC_URL%/favicon.ico" will
	work correctly both with client-side routing and a non-root public URL.
	Learn how to configure a non-root public URL by running `npm run build`.
	-->
	<title>React App</title>
	</head>

	<body>
	<noscript>
	You need to enable JavaScript to run this app.
	</noscript>

	<div id="root"></div>
	<div id="section_form"></div>
	<div id="section_form2"></div>
	<div id="name_form"></div>
	<!--
	This HTML file is a template.
	If you open it directly in the browser, you will see an empty page.

	You can add webfonts, meta tags, or analytics to this file.
	The build step will place the bundled scripts into the <body> tag.

	To begin the development, run `npm start` or `yarn start`.
	To create a production bundle, use `npm run build` or `yarn build`.
	-->
	</body>

	</html>
	import React from "react";
	import ReactDOM from "react-dom";

	//==========================================
	class InputIdCard extends React.Component {
	constructor(props) {
	super(props);
	this.state = { value: "12234", parent: props.parent };
	}

	onOK100() {
	console.log("ON OK 100 ");
	}
	onChangeHandler(e) {
	console.log("InputIdCard.onChangeHanlder " + e.target.value);
	var val1 = e.target.value;
	var state = { value: val1 };
	this.setState(state);
	console.log(this.state.parent);
	if (this.state.parent === undefined) {
	return;
	}
	console.log(this.state.parent.getType());
	if (val1 === "1000") {
	this.state.parent.setFormColor("lightgreen");
	this.state.parent.setAllowSubmit();
	} else {
	this.state.parent.setFormColor("pink");
	this.state.parent.setDenySubmit();
	}
	}

	render() {
	//var style = { backgroundColor: 'lightyellow', maxLength: 13 }
	return (
	<div>
	<label for={this.props.name}>{this.props.label}: </label>
	<input
	className="form-control "
	type="text"
	parent={this.props.parent}
	value={this.state.value}
	name={this.props.name}
	id={this.props.name}
	placeholder={this.props.label}
	onChange={this.onChangeHandler.bind(this)}
	/>
	</div>
	);
	}
	}
	//==========================================

	/**
	* @param: action
	* @param: name
	* @param: title
	*/
	class FormCheck extends React.Component {
	constructor(props) {
	super(props);
	var style1 = {
	border: "1px solid silver",
	padding: "3px",
	backgroundColor: props.bgcolor,
	borderRadius: "25px"
	};
	let bt1style = {
	display: "visible",
	disabled: "disabled"
	};
	this.state = { style: style1, bt1style: bt1style };
	}
	getType() {
	return "FormCheck";
	}

	setAllowSubmit() {
	let bt1s1 = Object.assign({}, this.state.bt1style);
	bt1s1.disabled = false;
	this.setState({ bt1style: bt1s1 });
	}
	setDenySubmit() {
	let bt1s1 = Object.assign({}, this.state.bt1style);
	bt1s1.disabled = true;
	this.setState({ bt1style: bt1s1 });
	}

	setFormColor(colorName) {
	console.log("> FormCheck setFormColor(" + colorName + ")");
	let style1 = Object.assign({}, this.state.style);
	style1.backgroundColor = colorName;
	this.setState({ style: style1 });
	}

	render() {
	return (
	<form
	action={this.props.action}
	method="POST"
	className="form"
	name={this.props.name}
	id={this.props.name}
	style={this.state.style}
	>
	<div>
	<h1>{this.props.title}</h1>
	<InputIdCard
	name="idcard"
	parent={this}
	onChange={this.props.onIdCardChange}
	label="กรุณาป้อนเลข ( ป้อน 1000 เพื่อแบันทึกได้ )"
	/>
	<br />
	<input
	type="submit"
	name="bt1"
	style={this.state.bt1style}
	className="form-control btn btn-info "
	value="ค้นหา"
	disabled={this.state.bt1style.disabled}
	/>
	<br />
	<br />
	</div>
	</form>
	);
	}
	}

	var onIdCardChange = function(e) {
	console.log("onIdCardChange(e) " + e.target);
	};
	//==========================================
	ReactDOM.render(
	<FormCheck onIdCardChange={onIdCardChange} name="f1" bgcolor="lightgrey" />,
	document.getElementById("section_form")
	);

	ReactDOM.render(
	<FormCheck onIdCardChange={onIdCardChange} name="f2" bgcolor="lightyellow" />,
	document.getElementById("section_form2")
	);

	ReactDOM.render(<InputIdCard />, document.getElementById("name_form"));