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How to use native Ajax data? Where is the created click time?

<!doctype html>

<html>

<head>

<meta charset="UTF-8">

<title>EMS</title>

<style type="text/css">

#ems{

position: absolute;

left: 50%;

width: 400px;

height: auto;

margin-left: -200px;

background: lightGreen;

text-align: center;

min-height: 50px;

height: 500px;

overflow-y: scroll;

overflow-x: hidden;

}

#ems input{

height: 25px;

margin-top: 10px;

}

#list{

background: lightBlue;

}

#list li{

text-align: left;

}

</style>


</head>

<body>

<div id="ems">

<div>

<input type="text" id="code">

<input type="button" value="查询" id="btn">

</div>

<div id="list">

</div>

</div>

<script type="text/javascript">


##function ajax(data){

//data= {data:"",dataType:"xml/json",type:"get/post",url:"",asyn:"true/false",success:function(){},failure:function(){} }


//data:{username:123,password:456}

//data = 'username=123&password=456';

//First step: Create xhr object

var xhr = null;

if(window.XMLHttpRequest){//Standard browser

xhr = new XMLHttpRequest();

}else{

xhr = new ActiveXObject('Microsoft.XMLHTTP');

}

//Step 2 : Prepare some configuration parameters before sending

var type = data.type == 'get'?'get':'post';

var url = '';

if(data.url){

url = data.url;

if(type == 'get'){

url = "?" data. data "&_t=" new Date().getTime();

}

}

var flag = data.asyn == 'true'?'true': 'false';

xhr.open(type,url,flag);


//Step 3: Execute the sending action

if(type == 'get'){

xhr.send(null);

}else if(type == 'post'){

xhr .setRequestHeader("Content-Type","application/x-www-form-urlencoded");

xhr.send(data.data);

}


//Step 4: Specify the callback function

xhr.onreadystatechange = function(){

if(this.readyState == 4){

if(this.status == 200){

if(typeof data.success == 'function'){

var d = data.dataType == 'xml' ?xhr.responseXML:xhr.responseText;

data.success(d);

}

}else{

if(typeof data.failure == 'function'){

data.failure();

}

}

}

}


}






##window.onload = function(){

//Register button click event

var btn = document.getElementById('btn ');

var code = document.getElementById('code').value;

btn.onclick = function(){

var param = {

url:'07ems.php?code=' code,

type:'get',

dataType:'json',

success:function(data ){

if(data.status == 0){

var list = data.data.info.context;

var tag = '';

for(var i=0;i<list.length;i ){

var item = list[i];

var desc = item.desc;

var t = new Date();

          t.setTime(item.time '000');

var str = t.getFullYear() 'Year' (t.getMonth( ) 1) 'month' t.getDay() 'day' (t.getHours()>12?' afternoon':' morning') t.getHours() ':' t.getMinutes() ':' t .getSeconds();

## tag = '<li><div>' str '</div><div>' item.desc '< /div></li>';


}


var ul = document.createElement('ul') ;

ul.innerHTML = tag;

document.getElementById('list').appendChild(ul);


}else {

var info = data.msg;

document.getElementById('list').innerHTML = info;

}



},failure:function () {

alert(12);

}


};

ajax(param);

}

}

//Exercise questions: Use encapsulated methods to implement Yesterday’s EMS query

</script>

</body>

</html>


零秒距离零秒距离2691 days ago1584

reply all(1)I'll reply

  • PHP中文网

    PHP中文网2017-07-21 10:33:28

    ajax_json.js

    function ajax(){
try{
this.xmlHttp = new XMLHttpRequest();
}catch(e){
try{
this.xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
}catch(e){
try{
this.xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
}catch(e){
alert("your web explorer not support AJAX");
return false;
}
}
}
}
ajax.prototype.doajax=function(){
var target,func,var_s,count,all_c,i,xmlHttp,appstr,obj;
target=arguments[arguments.length-2];
func=arguments[arguments.length-1];
var_s="";
count=0;
all_c=0;
for(i=0;i<arguments.length-2;i++){
if(count==0){
count=1;
if(all_c==0){
all_c=1;
var_s+=arguments[i];
}else{
var_s+="&"+arguments[i];
}
}else{
count=0;
var_s+=("="+escape(replaceall(arguments[i],"+","#add#")));
}
}
xmlHttp=this.xmlHttp;
xmlHttp.onreadystatechange=function(){
if(xmlHttp.readyState==4 && xmlHttp.status==200){
appstr=unescape(unescape(xmlHttp.responseText));
obj=eval('('+appstr+')');
eval(func+"(obj);");
}
};
xmlHttp.open('POST',target,true);
xmlHttp.setRequestHeader("Content-Type","application/x-www-form-urlencoded");
xmlHttp.send(var_s);
};
function replaceall(str,from,to){
while(str.indexOf(from)>=0){
str=str.replace(from,to);
}
return(str);
};
function aolk(olkt){
return replaceall(replaceall(olkt,"#brn#","\n"),"#brr#","\r");
}

    client: File name demo.html

    <script src="ajax_json.js"></script>
<script> 
function aa(pp){
alert(pp.linkman);
alert(aolk(pp.password[0].me));
alert(pp.password[1].you);
}
</script>
<textarea id=user></textarea><br>
<input type=button value="1111" onclick='$=new ajax();$.doajax("nm",document.all.user.value,"test_json.php","aa");'>

    server: File name test_json.php

    <?php
function escape($str) {  
 preg_match_all("/[\x80-\xff].|[\x01-\x7f]+/",$str,$r);  
 $ar = $r[0];  
 foreach($ar as $k=>$v) {  
   if(ord($v[0]) < 128)  
     $ar[$k] = rawurlencode($v);  
   else  
     $ar[$k] = "%u".bin2hex(iconv("GB2312","UCS-2",$v));  
 }  
 return join("",$ar);  
}
function unescape($str) {  
 $str = rawurldecode($str);  
 preg_match_all("/(?:%u.{4})|.+/",$str,$r);  
 $ar = $r[0];  
 foreach($ar as $k=>$v) {  
   if(substr($v,0,2) == "%u" && strlen($v) == 6)  
     $ar[$k] = iconv("UCS-2","GB2312",pack("H4",substr($v,-4)));  
 }  
 return join("",$ar);  
}
function olk($olkt){
return str_replace("#add#","+",str_replace("\r","#brr#",str_replace("\n","#brn#",str_replace('"','\"',$olkt))));
}
$nm=unescape(stripslashes($_POST["nm"]));
echo escape('{"linkman":"1111","password":[{"me":"'.olk($nm).'"},{"you":"hello"}]}');


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