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原生js和css写虚拟键盘

代码来源忘记是哪个大神的了，抱歉抱歉

放上源码：

<!-- 虚拟键盘 -->

<!DOCTYPE html>

<html>

<head>

    <meta charset="utf-8" >

    <title>虚拟键盘</title>

    <style>

        #inputArea{position: absolute; top: 30%; left: 20%;}

        .keyboardBox{position: fixed; top: 50%; left: 20%; width: 708px; height: 256px; margin: 0; padding: 10px; background-color: #ccc; font-size: 16px;}

        .line{position: relative; height: 50px; line-height: 50px;}

        .keys, .keysCmd, .keys_d{box-sizing: border-box; float: left; width: 45px; height: 45px; line-height: 45px; margin: 0 0 3px 3px; border-radius: 4px; border: 1px solid #333; text-align: center; cursor: pointer; background-color: #fff;}

        .keys:hover, .keysCmd:hover, .keys_d:hover{box-shadow: 0px 0px 3px #333 inset;}

        .keys:active, .keysCmd:active, .keys_d:active{background-color: #dedede;}

        .active{background-color: #dedede; box-shadow: 0px 0px 3px #333 inset;}

        .keys_d{height: 45px; line-height: 20px;}

        .key_enter{width: 102px;}

        .k-w-50{width: 50px;}

        .k-w-70{width: 70px;}

        .k-w-75{width: 75px;}

        .k-w-80{width: 80px;}

        .k-w-100{width: 100px;}

        .k-w-120{width: 120px;}

        .k-w-704{width: 704px;}

        .gap{margin-left: 30px;}

        .gap_t{margin-top: 10px;}

        .line .l-h-40{line-height: 40px;}

        .f-s-14{font-size: 14px;}

        .t-a-l{padding-left: 15px; text-align: left;}

    </style>

</head>

<body>

<textarea name="inputArea" id="inputArea" cols="80" rows="10" placeholder="点击虚拟键盘输入"></textarea>

<div class="keyboardBox" id="keyboard">

    <div class="line gap_t">

        <div class="keys_d t-a-l" data-kid="192"><div>~</div><div>`</div></div>

        <div class="keys_d t-a-l" data-kid="49"><div>!</div><div>1</div></div>

        <div class="keys_d t-a-l" data-kid="50"><div>@</div><div>2</div></div>

        <div class="keys_d t-a-l" data-kid="51"><div>#</div><div>3</div></div>

        <div class="keys_d t-a-l" data-kid="52"><div>$</div><div>4</div></div>

        <div class="keys_d t-a-l" data-kid="53"><div>%</div><div>5</div></div>

        <div class="keys_d t-a-l" data-kid="54"><div>^</div><div>6</div></div>

        <div class="keys_d t-a-l" data-kid="55"><div>&amp;</div><div>7</div></div>

        <div class="keys_d t-a-l" data-kid="56"><div>*</div><div>8</div></div>

        <div class="keys_d t-a-l" data-kid="57"><div>(</div><div>9</div></div>

        <div class="keys_d t-a-l" data-kid="48"><div>)</div><div>0</div></div>

        <div class="keys_d t-a-l" data-kid="189"><div>_</div><div>-</div></div>

        <div class="keys_d t-a-l" data-kid="187"><div>+</div><div>=</div></div>

        <div class="keysCmd k-w-80 l-h-40 f-s-14" data-kid="8">Backspace</div>

    </div>

    <div class="line">

        <div class="keysCmd k-w-50" data-kid="9">Tab</div>

        <div class="keys" data-kid="81">Q</div>

        <div class="keys" data-kid="87">W</div>

        <div class="keys" data-kid="69">E</div>

        <div class="keys" data-kid="82">R</div>

        <div class="keys" data-kid="84">T</div>

        <div class="keys" data-kid="89">Y</div>

        <div class="keys" data-kid="85">U</div>

        <div class="keys" data-kid="73">I</div>

        <div class="keys" data-kid="79">O</div>

        <div class="keys" data-kid="80">P</div>

        <div class="keys_d t-a-l" data-kid="219"><div>{</div><div>[</div></div>

        <div class="keys_d t-a-l" data-kid="221"><div>}</div><div>]</div></div>

        <div class="keys_d k-w-75 t-a-l" data-kid="220"><div>|</div><div>\</div></div>

    </div>

    <div class="line">

        <div class="keysCmd k-w-70 f-s-14" data-kid="20">CapsLock</div>

        <div class="keys" data-kid="65">A</div>

        <div class="keys" data-kid="83">S</div>

        <div class="keys" data-kid="68">D</div>

        <div class="keys" data-kid="70">F</div>

        <div class="keys" data-kid="71">G</div>

        <div class="keys" data-kid="72">H</div>

        <div class="keys" data-kid="74">J</div>

        <div class="keys" data-kid="75">K</div>

        <div class="keys" data-kid="76">L</div>

        <div class="keys_d t-a-l" data-kid="186"><div>:</div><div>;</div></div>

        <div class="keys_d t-a-l" data-kid="222"><div>"</div><div>'</div></div>

        <div class="keysCmd key_enter" data-kid="13">Enter</div>

    </div>

    <div class="line">

        <div class="keysCmd k-w-100" data-kid="16">Shift</div>

        <div class="keys" data-kid="90">Z</div>

        <div class="keys" data-kid="88">X</div>

        <div class="keys" data-kid="67">C</div>

        <div class="keys" data-kid="86">V</div>

        <div class="keys" data-kid="66">B</div>

        <div class="keys" data-kid="78">N</div>

        <div class="keys" data-kid="77">M</div>

        <div class="keys_d t-a-l" data-kid="188"><div><</div><div>,</div></div>

        <div class="keys_d t-a-l" data-kid="190"><div>></div><div>.</div></div>

        <div class="keys_d t-a-l" data-kid="191"><div>?</div><div>/</div></div>

        <div class="keysCmd k-w-120" data-kid="16">Shift</div>

    </div>

    <div class="line">

        <div class="keys k-w-704" data-kid="32">&nbsp;</div>

    </div>

</div>

<!-- <script type="text/javascript" src="keyboard.js"></script> -->

<script>

window.onload = function(){

    new keyboard().addKeyboard('inputArea');

}

</script>

</body>

</html>

<script type="text/javascript">

    //* keyboard.js

    var keyboard = (function(){

        var keyboardObj = document.getElementById('keyboard'), _inputID, _shiftStatus = false, _capsLock = false;

        // 显示虚拟键盘

        var _showKeyboard = function(){

            keyboardObj.style.display = 'block';

        }

        // 隐藏虚拟键盘

        var _hideKeyboard = function(){

            keyboardObj.style.display = 'none';

        }

        // 获取输入框的内容

        var _getInputContent = function(){

            var inputContent = document.getElementById(_inputID).innerText || document.getElementById(_inputID).textContent;

            return inputContent;

        }

        // 输入新内容

        var _inputNewContent = function(str){

            document.getElementById(_inputID).innerHTML = str;

        }

        // 添加classname

        function _addClass(obj, cls){

            var obj_class = obj.className,

            blank = obj_class != '' ? ' ' : '';

            var added = obj_class + blank + cls;

            obj.className = added;

        }

        // 删除classname

        function _removeClass(obj, cls){

            var obj_class = ' ' + obj.className + ' ';

            obj_class = obj_class.replace(/(\s+)/gi, ' ');

            var removed = obj_class.replace(' ' + cls + ' ', ' ');

            removed = removed.replace(/(^\s+)|(\s+$)/g, '');

            obj.className = removed;

        }

        // 为按钮添加active

        function _addActive(cls, keycode){

            var keys = document.getElementsByClassName(cls);

            for(var o of keys){

                if(o.getAttribute('data-kid') == keycode){

                    _addClass(o, 'active');

                }

            }

        }

        // 为按钮取消active

        function _removeActive(cls, keycode){

            var keys = document.getElementsByClassName(cls);

            for(var o of keys){

                if(o.getAttribute('data-kid') == keycode){

                    _removeClass(o, 'active');

                }

            }

        }

        // 添加shift状态

        var _addShift = function(){

            _addActive('keysCmd', 16);

            return _shiftStatus = true;

        }

        // 取消shift状态

        var _removeShift = function(){

            _removeActive('keysCmd', 16);

            return _shiftStatus = false;

        }

        // 添加CapsLock状态

        var _addCapsLock = function(){

            _addActive('keysCmd', 20);

            return _capsLock = true;

        }

        // 取消CapsLock状态

        var _removeCapsLock = function(){

            _removeActive('keysCmd', 20);

            return _capsLock = false;

        }

        // 给按钮绑定触发键盘事件的事件

        var _bindEvent = function(){

            // 字母按键

            var keys = keyboardObj.getElementsByClassName('keys');

            for(var o of keys){

                o.onclick = function(){

                    var strArr = _getInputContent().split('');

                    if(_shiftStatus){

                        _capsLock = !_capsLock;

                        _capsLock ? strArr.push(this.innerHTML.toUpperCase()) : strArr.push(this.innerHTML.toLowerCase());

                        _capsLock = !_capsLock;

                        _removeShift();

                    }

                    else{_capsLock ? strArr.push(this.innerHTML.toUpperCase()) : strArr.push(this.innerHTML.toLowerCase());}

                    _inputNewContent(strArr.join(''));

                }

            }

            // 数字及特殊符号按键

            var keys_d = document.getElementsByClassName('keys_d');

            for(var o of keys_d){

                o.onclick = function(){

                    var strArr = _getInputContent().split('');

                    var key1 = this.getElementsByTagName('div')[0].innerHTML;

                    var key2 = this.getElementsByTagName('div')[1].innerHTML;

                    if(_shiftStatus){

                        strArr.push(key1);

                        _removeShift();

                    }else{strArr.push(key2);}

                    _inputNewContent(strArr.join(''));

                }

            }

            // shift、capslock、enter、tab、backspace 按钮

            var keysCmd = document.getElementsByClassName('keysCmd');

            for(var o of keysCmd){

                o.onclick = function(){

                    var strArr = _getInputContent().split('');

                    var keyCode = this.getAttribute('data-kid');

                    if(keyCode == 8){

                        strArr.pop();

                        _inputNewContent(strArr.join(''));

                    }else if(keyCode == 9){

                        strArr.push('&nbsp;&nbsp;');

                        _inputNewContent(strArr.join(''));

                    }else if(keyCode == 13){

                        strArr.push('\n');

                        _inputNewContent(strArr.join(''));

                    }else if(keyCode == 16){

                        if(!_shiftStatus){_addShift();}else{_removeShift();}

                    }else if(keyCode == 20){

                        if(!_capsLock){_addCapsLock();}else{_removeCapsLock();}

                    }

                }

            }

        }

        var keyboard = function(){}

        // 输入框绑定键盘

        keyboard.prototype.addKeyboard = function(id){

            _inputID = id

            var inputObj = document.getElementById(id);

            inputObj.onclick = _showKeyboard();

            _bindEvent();

        }

        return keyboard;

    })()

</script>

html

放上效果图：

原生js和css写虚拟键盘-LMLPHP

05-02 21:51
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