一、起因
最近支付的同事說，數字鍵盤有些問題；在移動設備上有時候比較難出現點（.） 和數字在一起的格局；因此，考慮到這種情況，就建議手寫個模擬鍵盤了。花了一晚上的時間，寫了個簡單的鍵盤，基本能用。考慮到有的開發者沒有使用juqery,就使用原生的js了。
Github地址：https://github.com/vczero/keyboard
二、截圖如下
三、體驗地址（需要點擊input才能彈出數字鍵盤的哦）
URL: http://vczero.github.io/num_key/index.html
四、代碼比較簡單，直接貼了
;(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; //樣式 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;">刪除</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 !== "刪除"){ 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 === "刪除"){ 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、簡單demo
<!DOCTYPE html> <html> <head> <meta charset="utf-8" /> <title>模擬數字鍵盤</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內容了，希望大家能夠喜歡。
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