Question

js中怎么样获取从form提交后返回的json数据

Answer 1

function exitsCheck(str) {
if(jsonXmlHttpSupport) {
var sUrl = 'Action.action?str='+encodeURIComponent(str);
var jsonRequest = new XMLHttpRequest();
jsonRequest.onreadystatechange = function() {
if(jsonRequest.readyState == 4) {
var jsonResult = eval('(' + jsonRequest.responseText + ')');
if (jsonResult.jsonMsg != 0) {
alert("xxxxx");
return;
}
document.forms[0].action = "<%=request.getContextPath()%>/xxxxxAction";
document.forms[0].submit();
}
};
jsonRequest.open('POST', sUrl);
jsonRequest.send(null);
}
}