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原生js制作简单的数字键盘

2019-11-20 12:37:02
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一、起因

  最近支付的同事说,数字键盘有些问题;在移动设备上有时候比较难出现点(.) 和数字在一起的格局;因此,考虑到这种情况,就建议手写个模拟键盘了。花了一晚上的时间,写了个简单的键盘,基本能用。考虑到有的开发者没有使用juqery,就使用原生的js了。

  Github地址:https://github.com/vczero/keyboard

二、截图如下

三、体验地址(需要点击input才能弹出数字键盘的哦)

URL: http://vczero.github.io/num_key/index.html

四、代码比较简单,直接贴了

;(function(exports){  var KeyBoard = function(input, options){    var body = document.getElementsByTagName('body')[0];    var DIV_ID = options && options.divId || '__w_l_h_v_c_z_e_r_o_divid';        if(document.getElementById(DIV_ID)){      body.removeChild(document.getElementById(DIV_ID));    }        this.input = input;    this.el = document.createElement('div');        var self = this;    var zIndex = options && options.zIndex || 1000;    var width = options && options.width || '100%';    var height = options && options.height || '193px';    var fontSize = options && options.fontSize || '15px';    var backgroundColor = options && options.backgroundColor || '#fff';    var TABLE_ID = options && options.table_id || 'table_0909099';    var mobile = typeof orientation !== 'undefined';        this.el.id = DIV_ID;    this.el.style.position = 'absolute';    this.el.style.left = 0;    this.el.style.right = 0;    this.el.style.bottom = 0;    this.el.style.zIndex = zIndex;    this.el.style.width = width;    this.el.style.height = height;    this.el.style.backgroundColor = backgroundColor;        //样式    var cssStr = '<style type="text/css">';    cssStr += '#' + TABLE_ID + '{text-align:center;width:100%;height:160px;border-top:1px solid #CECDCE;background-color:#FFF;}';    cssStr += '#' + TABLE_ID + ' td{width:33%;border:1px solid #ddd;border-right:0;border-top:0;}';    if(!mobile){      cssStr += '#' + TABLE_ID + ' td:hover{background-color:#1FB9FF;color:#FFF;}';    }    cssStr += '</style>';        //Button    var btnStr = '<div style="width:60px;height:28px;background-color:#1FB9FF;';    btnStr += 'float:right;margin-right:5px;text-align:center;color:#fff;';    btnStr += 'line-height:28px;border-radius:3px;margin-bottom:5px;cursor:pointer;">完成</div>';        //table    var tableStr = '<table id="' + TABLE_ID + '" border="0" cellspacing="0" cellpadding="0">';      tableStr += '<tr><td>1</td><td>2</td><td>3</td></tr>';      tableStr += '<tr><td>4</td><td>5</td><td>6</td></tr>';      tableStr += '<tr><td>7</td><td>8</td><td>9</td></tr>';      tableStr += '<tr><td style="background-color:#D3D9DF;">.</td><td>0</td>';      tableStr += '<td style="background-color:#D3D9DF;">删除</td></tr>';      tableStr += '</table>';    this.el.innerHTML = cssStr + btnStr + tableStr;        function addEvent(e){      var ev = e || window.event;      var clickEl = ev.element || ev.target;      var value = clickEl.textContent || clickEl.innerText;      if(clickEl.tagName.toLocaleLowerCase() === 'td' && value !== "删除"){        if(self.input){          self.input.value += value;        }      }else if(clickEl.tagName.toLocaleLowerCase() === 'div' && value === "完成"){        body.removeChild(self.el);      }else if(clickEl.tagName.toLocaleLowerCase() === 'td' && value === "删除"){        var num = self.input.value;        if(num){          var newNum = num.substr(0, num.length - 1);          self.input.value = newNum;        }      }    }        if(mobile){      this.el.ontouchstart = addEvent;    }else{      this.el.onclick = addEvent;    }    body.appendChild(this.el);  }    exports.KeyBoard = KeyBoard;})(window);

五、简单demo

 <!DOCTYPE html> <html>   <head>     <meta charset="utf-8" />     <title>模拟数字键盘</title>     <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0, minimal-ui" />   </head>   <body>     <div>       <input id="text1" readonly="readonly" type="number" style="height:28px;width:98%;outline:none;border:1px solid #1AB6FF;padding-left:3px;"/>       <br />       <br />       <input id="text2" readonly="readonly" type="number" style="height:28px;width:98%;outline:none;border:1px solid #1AB6FF;padding-left:3px;"/>     </div>     <script type="text/javascript" src="keyboard.js"></script>     <script type="text/javascript">     (function(){       var input1 = document.getElementById('text1');       var input2 = document.getElementById('text2');       input1.onclick = function(){         new KeyBoard(input1);       };       input2.onclick = function(){         new KeyBoard(input2);       };     })();     </script>   </body> </html>

以上所述就是本文的全部内容了,希望大家能够喜欢。

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