reactjs实现一个苹果手机计算器效果代码-html代码-BFW代码库

代码语言：html

代码描述：reactjs实现一个苹果手机计算器效果代码

下面为部分代码预览，完整代码请点击下载或在bfwstudio webide中打开

<!DOCTYPE html>
<html lang="en">

<head>

    <meta charset="UTF-8">

    <meta name="viewport" content="width=400, height=600, initial-scale=0.8, maximum-scale=1">
    <script type="text/javascript" src="//repo.bfw.wiki/bfwrepo/js/babel.min.js"></script>

    <link rel='stylesheet' href='https://fonts.googleapis.com/css?family=Roboto:100'>

    <style>
        html {
            box-sizing: border-box;
        }
        *, *:before, *:after {
            box-sizing: inherit;
        }

        body {
            margin: 0;
            font: 100 14px 'Roboto';
        }

        button {
            display: block;
            background: none;
            border: none;
            padding: 0;
            font-family: inherit;
            -webkit-user-select: none;
            -moz-user-select: none;
            -ms-user-select: none;
            user-select: none;
            cursor: pointer;
            outline: none;

            -webkit-tap-highlight-color: rgba(0,0,0,0);
        }

        button:active {
            box-shadow: inset 0px 0px 80px 0px rgba(0,0,0,0.25);
        }

        #wrapper {
            height: 100vh;

            display: flex;
            align-items: center;
            justify-content: center;
        }

        #app {
            width: 320px;
            height: 520px;
            position: relative;
        }

        .calculator {
            width: 100%;
            height: 100%;
            background: black;

            display: flex;
            flex-direction: column;
        }

        #wrapper .calculator {
            box-shadow: 0px 0px 20px 0px #aaa;
        }

        .calculator-display {
            color: white;
            background: #1c191c;
            line-height: 130px;
            font-size: 6em;

            flex: 1;
        }

        .auto-scaling-text {
            display: inline-block;
        }

        .calculator-display .auto-scaling-text {
            padding: 0 30px;
            position: absolute;
            right: 0;
            transform-origin: right;
        }

        .calculator-keypad {
            height: 400px;

            display: flex;
        }

        .calculator .input-keys {
            width: 240px;
        }

        .calculator .function-keys {
            display: flex;
        }

        .calculator .digit-keys {
            background: #e0e0e7;

            display: flex;
            flex-direction: row;
            flex-wrap: wrap-reverse;
        }

        .calculator-key {
            width: 80px;
            height: 80px;
            border-top: 1px solid #777;
            border-right: 1px solid #666;
            text-align: center;
            line-height: 80px;
        }
        .calculator .function-keys .calculator-key {
            font-size: 2em;
        }
        .calculator .function-keys .key-multiply {
            line-height: 50px;
        }
        .calculator .digit-keys .calculator-key {
            font-size: 2.25em;
        }
        .calculator .digit-keys .key-0 {
            width: 160px;
            text-align: left;
            padding-left: 32px;
        }
        .calculator .digit-keys .key-dot {
            padding-top: 1em;
            font-size: 0.75em;
        }
        .calculator .operator-keys .calculator-key {
            color: white;
            border-right: 0;
            font-size: 3em;
        }

        .calculator .function-keys {
            background: linear-gradient(to bottom, rgba(202,202,204,1) 0%, rgba(196,194,204,1) 100%);
        }
        .calculator .operator-keys {
            background: linear-gradient(to bottom, rgba(252,156,23,1) 0%, rgba(247,126,27,1) 100%);
        }
    </style>




</head>

<body>
    <div id="wrapper">
        <div id="app"></div>
    </div>

    <script type="text/javascript" src="//repo.bfw.wiki/bfwrepo/js/react.15.4.2.js"></script>
    <script type="text/javascript" src="//repo.bfw.wiki/bfwrepo/js/react-dom.15.4.2.js"></script>
    <script type="text/javascript" src="//repo.bfw.wiki/bfwrepo/js/polyfill.number.toLocaleString.js"></script>
    <script type="text/javascript" src="//repo.bfw.wiki/bfwrepo/js/react-point.min.js"></script>

    <script type = "text/babel">
const PointTarget = ReactPoint.PointTarget

class AutoScalingText extends React.Component {
  state = {
    scale: 1
  };
  
  componentDidUpdate() {
    const { scale } = this.state
    
    const node = this.node
    const parentNode = node.parentNode
    
    const availableWidth = parentNode.offsetWidth
    const actualWidth = node.offsetWidth
    const actualScale = availableWidth / actualWidth
    
    if (scale === actualScale)
      return
    
    if (actualScale < 1) {
      this.setState({ scale: actualScale })
    } else if (scale < 1) {
      this.setState({ scale: 1 })
    }
  }
  
  render() {
    const { scale } = this.state
    
    return (
      < div
        className="auto-scaling-text"
        style={{ transform: `scale(${scale},${scale})` }}
        ref={node => this.node = node}
      >{this.props.children}</div>
    )
  }
}

class CalculatorDisplay extends React.Component {
  render() {
    const { value, ...props } = this.props
    
    const language = navigator.language || 'en-US'
    let formattedValue = parseFloat(value).toLocaleString(language, {
      useGrouping: true,
      maximumFractionDigits: 6
    })
    
    // Add back missing .0 in e.g. 12.0
    const match = value.match(/\.\d*?(0*)$/)
    
    if (match)
      formattedValue += (/[1-9]/).test(match[0]) ? match[1] : match[0]
    
    return (
      <div {...props} className="calculator-display">
        <AutoScalingText>{formattedValue}</AutoScalingText>
      </div>
    )
  }
}

class CalculatorKey extends React.Component {
  render() {
    const { onPress, className, ...props } = this.props
    
    return (
      <PointTarget onPoint={onPress}>
        <button className={`calculator-key ${className}`} {...props}/>
      </PointTarget>
    )
  }
}

const CalculatorOperations = {
  '/': (prevValue, nextValue) => prevValue / nextValue,
  '*': (prevValue, nextValue) => prevValue * nextValue,
  '+': (prevValue, nextValue) => prevValue + nextValue,
  '-': (prevValue, nextValue) => prevValue - nextValue,
  '=': (prevValue, nextValue) => nextValue
}

class Calc.........完整代码请登录后点击上方下载按钮下载查看