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Ajax & PHP 结合讲解之二 实例

 2009-11-25 00:00:00 来源:WEB开发网   
核心提示:效果1. 当鼠标放在某日上时,如果当天有备忘录,Ajax & PHP 结合讲解之二 实例,则会显示出来,如下图:PHP 结合讲解之二 实例" border="0" onload="return imgzoom(this,550);" style="cu

效果1. 当鼠标放在某日上时,如果当天有备忘录,则会显示出来,如下图:

Ajax & <a target=PHP 结合讲解之二 实例" border="0" onload="return imgzoom(this,550);" style="cursor:pointer;" onclick="javascript:window.open(this.src);"/>

function checkfortasks (thedate, e){ 
 //找到页面中taskbox对应<div>设置为可见 
 theObject = document.getElementById("taskbox"); 
 theObject.style.visibility = "visible"; 
 //初始化taskbox位置 
 var posx = 0; 
 var posy = 0; 
 //定位taskbox位置为鼠标位置 
 posx = e.clientX + document.body.scrollLeft; 
 posy = e.clientY + document.body.scrollTop; 
 theObject.style.left = posx + "px"; 
 theObject.style.top = posy + "px"; 
 //设置PHP请求页面 
 serverPage = "taskchecker.php?thedate=" + thedate; 
 //设置PHP返回数据替换位置 
 objID = "taskbox"; 
 var obj = document.getElementById(objID); 
 //发送请求并加载返回数据 
 xmlhttp.open("GET", serverPage); 
 xmlhttp.onreadystatechange = function(){ 
  if (xmlhttp.readyState == 4 && xmlhttp.status == 200){ 
   obj.innerHTML = xmlhttp.responseText; 
  } 
 } 
 xmlhttp.send(null); 
}

效果2. 当鼠标点击某日录入姓名时,系统会自动检索姓名是否存在,并可以通过选择填入姓名框中,如图:

Ajax & <a target=PHP 结合讲解之二 实例" border="0" onload="return imgzoom(this,550);" style="cursor:pointer;" onclick="javascript:window.open(this.src);"/>

function autocomplete (thevalue, e){ 
 //定位页面中autocompletediv(显示检索姓名的标签)的<div>位置 
 theObject = document.getElementById("autocompletediv"); 
 //设置为可见 
 theObject.style.visibility = "visible"; 
 theObject.style.width = "152px"; 
 //设置检索标签位置 
 var posx = 0; 
 var posy = 0; 
  
 posx = (findPosX (document.getElementById("yourname")) + 1); 
 posy = (findPosY (document.getElementById("yourname")) + 23); 
  
 theObject.style.left = posx + "px"; 
 theObject.style.top = posy + "px"; 
 //设定事件为键盘录入 
 var theextrachar = e.which; 
  
 if (theextrachar == undefined){ 
  theextrachar = e.keyCode; 
 } 
 //设定加载检索名单位置 
 var objID = "autocompletediv"; 
  
 //设定PHP请求页面,并将用户输入的姓名传值过去(同时考虑到Backspace作用) 
 if (theextrachar == 8){ 
  if (thevalue.length == 1){ 
  var serverPage = "autocomp.php"; 
  } 
  else{ 
  var serverPage = "autocomp.php" + "?sstring=" + thevalue.substr(0, (thevalue.length -1)); 
  } 
 } 
 else{ 
  var serverPage = "autocomp.php" + "?sstring=" + thevalue + String.fromCharCode(theextrachar); 
 } 
 //发送请求并加载返回数据 
 var obj = document.getElementById(objID); 
 xmlhttp.open("GET", serverPage); 
 xmlhttp.onreadystatechange = function() { 
 if (xmlhttp.readyState == 4 && xmlhttp.status == 200) { 
  obj.innerHTML = xmlhttp.responseText; 
 } 
 } 
 xmlhttp.send(null); 
}

出处: http://www.cnblogs.com/gnielee/

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