$.ajax()
Basic usage:
.ajax $ ({ url: url, // address of the Data: the Data, // parameter of the type: 'POST', // submission can choose to post / get recommended POST the async: false , // synchronous asynchronous dataType: 'json', // return data type Success: function (data) { accidentList = Data.List; // this data may be taken directly inside the data, because the return value is provided json manner } });
for example:
document.getElementById("search").onclick = function() { var request = new XMLHttpRequest(); request.open("GET", "server.php?number=" + document.getElementById("keyword").value); request.send(); request.onreadystatechange = function() { if (request.readyState===4) { if (request.status===200) { document.getElementById("searchResult").innerHTML = request.responseText; } else { alert("Error: "+ request.status); } } } } document.getElementById("save").onclick = function() { var request = new XMLHttpRequest(); request.open("POST", "server.php"); var data = "name=" + document.getElementById("staffName").value + "&number=" + document.getElementById("staffNumber").value + "&sex=" + document.getElementById("staffSex").value + "&job=" + document.getElementById("staffJob").value; request.setRequestHeader("Content-type","application/x-www-form-urlencoded"); request.send(data); request.onreadystatechange = function() { if (request.readyState===4) { if (request.status===200) { document.getElementById("createResult").innerHTML = request.responseText; } else { alert("发生错误:" + request.status); } } } }
JQuery to read as follows:
$(document).ready(function(){ $("#search").click(function(){ $.ajax({ type: "GET", url: "http://127.0.0.1:8080/ajaxdemo/serverjson2.php?number=" + $("#keyword").val(), dataType: "json", success: function(data) { if (data.success) { $("#searchResult").html(data.msg); } else { $("#searchResult").html ( "Error:" + data.msg); } }, error: function(jqXHR){ alert("发生错误:" + jqXHR.status); }, }); }); $("#save").click(function(){ $.ajax({ type: "POST", url: "serverjson.php", data: { name: $("#staffName").val(), number: $("#staffNumber").val(), sex: $("#staffSex").val(), job: $("#staffJob").val() }, dataType: "json", success: function(data){ if (data.success) { $("#createResult").html(data.msg); } else { $("#createResult").html("出现错误:" + data.msg); } }, error: function(jqXHR){ alert("发生错误:" + jqXHR.status); }, }); }); });