原生js和css写虚拟键盘

时间：2019-09-29 14:27:24 阅读：128 评论：0 收藏：0 [点我收藏+]
标签：relative ima tle nts this script 事件 inf har
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：
技术图片
原生js和css写虚拟键盘
标签：relative ima tle nts this script 事件 inf har
原文地址：https://www.cnblogs.com/huchong-bk/p/11607617.html
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