单击HTML中的按钮以使用我的JavaScript时出现此错误。
myapp.azurewebsites.net/:1 Uncaught SyntaxError: Unexpected end of JSON input
at JSON.parse (<anonymous>)
JS:
function ajaxFunction() {
console.log("ajaxFunction()");
var ajaxRequest;
try {
ajaxRequest = new XMLHttpRequest();
} catch(e) {
try {
ajaxRequest = new ActiveXObject("Msxml2.XMLHTTP");
} catch(e) {
try {
ajaxRequest = new ActiveXObject("Microsoft.XMLHTTP");
} catch(e) {
alert("Broken");
return false;
}
}
}
ajaxRequest.onreadystatechange = function () {
if (ajaxRequest.readyState == 4 && ajaxRequest.status == 200) {
var form = document.getElementById("myform");
var titleParagraph = document.getElementById("home_title");
titleParagraph.innerHTML = ajaxRequest.responseText;
form.style.display = "none";
}
}
var value1 = document.getElementById("field1").value;
var value2 = document.getElementById("field2").value;
var url = "https://webapp.azurewebsites.net/users/" + value1 + "/" + value2;
console.log(url);
// Call sign in web service
ajaxRequest.open("GET", url, true);
ajaxRequest.send(null);
var jsonResponse = JSON.parse(ajaxRequest.responseText);
console.log("RESPONSE:");
console.log(jsonResponse);
}
当我转到https://webapp.azurewebsites.net/users/value1/value2
时,我会得到这个JSON[{"ID":1,"UserName":"username","FirstName":"first","LastName":"last","email":"example@example.com"}]
答案 0 :(得分:1)
ajaxRequest.open("GET", url, false);
第三个参数表示请求是否是异步的。因此,通过查看您的代码,它应该是同步的。