Jquery 将$.ajax（）函数返回的值与字符串进行比较

如果零件不工作，

var name = $("#name");

$.ajax({
    type:       "get",
    url:        "test.jsp",
    data:           "name="+name,
    success:    function(msg) {

        if( msg == "available" )
        {
            // you conditional code here
            // i want to display a image here with id nameInfo
            $('#result').hide();

            $("#result").html(msg).fadeIn("slow");
        }
    }
});

修剪您的响应代码并检查条件

 success: function(msg) {
                        if($.trim(msg) == '1') {
                            console.log("done");
                        } else {
                            console.log("fail");
                        }   

                }

如果（msg=='available'）{}
？哎哟，一个卷发括号跑了，对不起。修正。什么是擅离职守。我无法理解这是一个来自军队的英语表达，代表“未经许可缺席”，基本上意思是“失踪”。在我的回答中，我漏掉了一个大括号，这打破了密码。替换了大括号后，它现在应该可以工作了。在ajax查询中，它应该是name.val（）
$.ajax({
    type:       "get",
    url:        "test.jsp",
    data:           "name="+name,
    success:    function(msg) {

        if( msg == 'available' )
        {
            // you conditional code here
        }

        $('#result').hide();

        $("#result").html(msg)
        .fadeIn("slow");
    }
});

$.ajax({
    type:       "get",
    url:        "test.jsp",
    data:           "name="+name,
    success:    function(msg) {

        // msg is returned by the ajax function
        // this holds the returned data

        alert(msg);

        // Compare the msg variable to see if it returned condition
        // this compares the ENTIRE text of return, if it has any more
        // characters in it, this condition will never be met!
        if(msg == "available"){
            alert("Yes!");
        }else{
            alert("No :-(  ");   // Sad face :(  The return was something different
        }

    }
});

 success: function(msg) {
                        if($.trim(msg) == '1') {
                            console.log("done");
                        } else {
                            console.log("fail");
                        }   

                }

 $.ajax(
         {
          type: "POST",
          url: "test.php",
          data: $('#frmlogin').serialize()
        }
         ).done(
            function( resp ) {
                //alert(resp.indexOf("Email"));
                if(resp.indexOf("Email") > -1){
                    alert("Email text available on response");

                } else {
                    alert("Email text not available on response");   
                }
            }
        );