AJAX 验证用户名是否存在

function checkName() {

var name_hint = $("#name_hint");

var roleNameVal = $("#nodeName").val();

roleNameVal=encodeURI(roleNameVal);

name_hint.html("");

if (roleNameVal == "") {

name_hint.html("<font color=red>导航名称不能为空，请输入</font>");

return false;

} else {

url = "<%=basePath%>menu/addMenu!checkName.action?nodeName="+roleNameVal;

url += "&a=" + Math.floor(Math.random() * 1000);

$.post(url, null, nameRequest);

}

}

function nameRequest(data) {

var name_hint = $("#name_hint");

if (/t/.test(data)) {

name_hint.html("<font color=red>此名称已存在，请重新输入</font>");

checkNameFlag = false;

return;

} else {

name_hint.html("<font color=red></font>");

checkNameFlag = true;

}

}