jsonp点击按钮加载不同信息 

<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>无标题文档</title>
<script>
function fn1(data) {  //在ul1里显示信息
    var oUl1 = document.getElementById('ul1');
    var html = '';
    for (var i=0; i<data.length; i++) {
        html += '<li>'+data[i]+'</li>';
    }
    oUl1.innerHTML = html;
}
function fn2(data) {  //在ul2里显示信息
    var oUl2 = document.getElementById('ul2');
    var html = '';
    for (var i=0; i<data.length; i++) {
        html += '<li>'+data[i]+'</li>';
    }
    oUl2.innerHTML = html;
}
function fn3(data) {   //在ul3里显示信息
    var oUl3 = document.getElementById('ul3');
    var html = '';
    for (var i=0; i<data.length; i++) {
        html += '<li>'+data[i]+'</li>';
    }
    oUl3.innerHTML = html;
}
</script>
<script>
window.onload = function() {
    
    var oBtn1 = document.getElementById('btn1');
    
    var oBtn2 = document.getElementById('btn2');
    
    oBtn1.onclick = function() {
        
        var oScript = document.createElement('script');
        oScript.src = 'getData.php?callback=fn1';  //传递参数fn1，执行函数fn1
        document.body.appendChild(oScript);
        
    }
    
    var oBtn2 = document.getElementById('btn2');
    
    oBtn2.onclick = function() {
        
        var oScript = document.createElement('script');
        oScript.src = 'getData.php?t=str&callback=fn2';  //传递参数t为str，执行函数fn2
        document.body.appendChild(oScript);
        
    }
    
    var oBtn3 = document.getElementById('btn3');
    
    oBtn3.onclick = function() {
        
        var oScript = document.createElement('script');
        oScript.src = 'getData.php?callback=fn3';
        document.body.appendChild(oScript);
        
    }
    
}
</script>
</head>

<body>
    <input type="button" id="btn1" value="加载数字" />
    <ul id="ul1"></ul>
    <input type="button" id="btn2" value="加载字母" />
    <ul id="ul2"></ul>
    <input type="button" id="btn3" value="加载字母" />
    <ul id="ul3"></ul>
</body>
</html>

PHP

<?php
$t = isset($_GET['t']) ? $_GET['t'] : 'num';  //前端传递参数t，默认返回num
$callback = isset($_GET['callback']) ? $_GET['callback'] : 'fn1';  //传递参数callback，默认fn1，自己写什么名，jsonp数据就是什么函数里，比如fn1({信息})

$arr1 = array('111111','22222222','33333333','4444444','555555555555555555555');
$arr2 = array('aaaaaaaaaaaa','bbbbbbbb','cccccccccccc','ddddddddd','eeeeeeeeeeee');

if ($t == 'num') {
    $data = json_encode($arr1);
} else {
    $data = json_encode($arr2);
}

echo $callback.'('.$data.');';

 

posted @ 2017-04-24 10:53  念念念不忘  阅读(242)  评论(0)    收藏  举报