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原生js创建虚拟数字键盘输入

2015-09-19 23:08 671 查看

使用google浏览器访问效果图如下：

以下是index.html文档源码：

<span style="background-color: rgb(255, 255, 255);"><!DOCTYPE html>
<html>
<head>
<meta charset="gb2312" />
<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></span>

以下是原生js对index.html文档进行的用户事件响应控制脚本keyboard.js:

<span style="background-color: rgb(255, 255, 255);">(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);</span>

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