Why does the local debug ajax prompt that this is json 404?

the version of jquery used is 3.3.1 

$(function(){
    com.getData();
};

var com = {
    getData: function(){
        $.ajax({
            url: "../demo.json", //json 404
            type: "get",
            async:true,
            data: "",
            dataType: "json",
            contentType: "application/json; charset=utf-8",
            success: function(data){
                com.getBootstrapTable(data);
            }
        });
    }
}

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404,

404

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Ajax jquery
Mar.31,2021

json file path paste to see

Big Brother, there is something wrong with your address. It is not because of jq, nor is it any other reason. It is your address.

this url
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since you say it's just an ordinary Http static server, rule out routing problems for the time being.
I always think that the real name of your demo.json file is demo.json , that is, write an extra space after it, you can check it.

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MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1b3c2e0-346a2.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1b3c2e0-346a2.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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