[英]JQuery AJAX retrieving an Array of Objects
我正在嘗試使用json_encode,以便我的jquery ajax函數可以從我的php腳本中檢索數據,但是我正在嘗試編碼和檢索的數組是一個對象數組
$la_uselessinfo = array();
$lv_cnt = 0;
$uselessinfo = pg_execute($gv_dbconn, "uselessinfo_cur", array());
while($la_row = pg_fetch_row($uselessinfo)) {
$la_uselessinfo[$lv_cnt]["uinf_idno"] = $la_row[0];
$la_uselessinfo[$lv_cnt]["uinf_desc"] = $la_row[1];
$lv_cnt = $lv_cnt + 1;
}
echo json_encode($la_uselessinfo);
我試圖使用jquery ajax函數檢索此
$.ajax({
url : 'scripts/phpfunctions.php',
type : 'GET',
data : {'action':'sel_uselessinfo'},
success : function(data) {
//console.log(data);
console.log(data["uinf_desc"][0]);
},
error : function(log) {
console.log(log.message);
}
});
我收到以下錯誤
Uncaught TypeError: Cannot read property '0' of undefined
我無法確定php代碼或jquery代碼是否出錯,檢索對象數組的正確方法是什么?
$.ajax({
url : 'scripts/phpfunctions.php',
type : 'GET',
data : {'action':'sel_uselessinfo'},
dataType: "json",
success : function(data) {
console.log(data[0]["uinf_desc"]);
console.log(data[0]["uinf_desc"]);
},
它應該是用PHP編寫的data[0]["uinf_desc"]
將您的PHP更改為:
$la_uselessinfo = array();
$lv_cnt = 0;
$uselessinfo = pg_execute($gv_dbconn, "uselessinfo_cur", array());
while($la_row = pg_fetch_row($uselessinfo)) {
$la_uselessinfo[$lv_cnt]["uinf_idno"] = $la_row[0];
$la_uselessinfo[$lv_cnt]["uinf_desc"] = $la_row[1];
$lv_cnt = $lv_cnt + 1;
}
echo json_encode($la_uselessinfo); //$la_uselessinfo is already an array, no need to wrap it again, and doing so causes you to misjudge the depth of your array
然后將jQuery更改為:
$.ajax({
url : 'scripts/phpfunctions.php',
type : 'GET',
data : {'action':'sel_uselessinfo'},
success : function(data) {
//console.log(data);
console.log(data[0]["uinf_desc"]); // this line changed
},
error : function(log) {
console.log(log.message);
}
});
要循環顯示結果,請執行以下操作:
// sample data var data = [{ "uinf_idno": "1", "uinf_desc": "website db " }, { "uinf_idno": "2", "uinf_desc": "local apache " }] $.each(data,function(i,e){ var uinf_idno = e.uinf_idno; var uinf_desc = e.uinf_desc; $('#result').append('uinf_idno= '+uinf_idno+' and uinf_desc= '+uinf_desc+' <br>'); });
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script> <div id="result"></div>
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