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JS實(shí)現(xiàn)簡單面向?qū)ο蟮念伾x擇器實(shí)例

 更新時(shí)間：2016年04月21日 12:01:36   作者：zhangw428  
這篇文章主要介紹了JS實(shí)現(xiàn)簡單面向?qū)ο蟮念伾x擇器,以完整實(shí)例形式分析了JavaScript基于面向?qū)ο髮?shí)現(xiàn)顏色選擇器的具體步驟與實(shí)現(xiàn)技巧,需要的朋友可以參考下

本文實(shí)例講述了JS實(shí)現(xiàn)簡單面向?qū)ο蟮念伾x擇器。分享給大家供大家參考，具體如下：

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>Untitled Document</title>
</head>
<body>
<script type="text/JavaScript">
<!--
var colorPicker = function(idStr){
 this.colorPool = ["#000000","#993300","#333300","#003300","#003366","#000080","#333399","#333333","#800000","#FF6600","#808000","#008000","#008080","#0000FF","#666699","#808080","#FF0000","#FF9900","#99CC00","#339966","#33CCCC","#3366FF","#800080","#999999","#FF00FF","#FFCC00","#FFFF00","#00FF00","#00FFFF","#00CCFF","#993366","#CCCCCC","#FF99CC","#FFCC99","#FFFF99","#CCFFCC","#CCFFFF","#99CCFF","#CC99FF","#FFFFFF"];
 this.initialize(idStr);
}
colorPicker.prototype = {
 initialize: function(idStr){
  var count=0;
  var html = '';
  var self = this;
  html+= '<table cellspacing="5" cellpadding="0" border="2" bordercolor="#000000" style="cursor:pointer;background:#ECE9D8" mce_style="cursor:pointer;background:#ECE9D8" >';
  // html+= '<tr><td align="center" colspan="8" width="160" height="20" id="currentColor" bgcolor="#ffffff">當(dāng)前顏色</td></tr>';
  for(i=0;i<5;i++)
  {
   html+= "<tr>";
   for(j=0;j<8;j++)
   {
    html+= '<td align="center" width="20" height="20" style="background:'+ this.colorPool[count]+'" mce_style="background:'+ this.colorPool[count]+'" unselectable="on">&nbsp;</td>';
    count++;
   }
   html+= "</tr>";
  }
  html+= '</table>';
  this.trigger = document.getElementById(idStr);
  this.div = document.createElement('div');
  this.div.innerHTML = html;
  var tds = this.div.getElementsByTagName('td');
  for(var i=0,l=tds.length;i<l;i++){
   tds[i].onclick = function(){
    self.setColor(this.style.backgroundColor);
   }
  }
  this.div.id = 'myColorPicker';
  this.trigger.parentNode.appendChild(this.div);
  this.div.style.position = 'absolute';
  this.div.style.left = this.trigger.offsetLeft + 'px'
  this.div.style.top = (this.trigger.clientHeight + this.trigger.offsetTop)+ 'px';
  //this.hide();
  this.trigger.onclick = function(){
   if(self.div.style.display == 'none'){
    self.show();
    return false;
   }else{
    self.hide();
    return false;
   }
  }
 },
 setColor : function(c){
  this.hide();
  document.getElementById('demo').style.backgroundColor = c //proEditor.setColor(c); //自己定義函數(shù)決定setColor的功能
 },
 hide : function(){
  this.div.style.display = 'none'
 },
 show : function(){
  this.div.style.display = 'block'
 }
}
// -->
</script>
<div >
<a href="#" mce_href="#" onclick="initColorPicker();return false" id="demo" style="position:absolute;left:200px">顏色選擇</a>
</div>
<script type="text/javascript">
<!--
function initColorPicker(){
 picker = new colorPicker('demo');
}
// -->
</script>
</body>
</html>

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更多關(guān)于JavaScript相關(guān)內(nèi)容可查看本站專題：《JavaScript切換特效與技巧總結(jié)》、《JavaScript查找算法技巧總結(jié)》、《JavaScript動(dòng)畫特效與技巧匯總》、《JavaScript錯(cuò)誤與調(diào)試技巧總結(jié)》、《JavaScript數(shù)據(jù)結(jié)構(gòu)與算法技巧總結(jié)》、《JavaScript遍歷算法與技巧總結(jié)》及《JavaScript數(shù)學(xué)運(yùn)算用法總結(jié)》

希望本文所述對(duì)大家JavaScript程序設(shè)計(jì)有所幫助。

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