从字符串的开头和结尾删除单引号

Question

I'm trying to remove single quotations from a raw text variable and post via AJAX.

I'm getting this error on return from the API endpoint: Invalid document: Content is not allowed in prolog .

This error is caused when your XML POST data is preceded by a "" or '' usually as is the case with mine. So all you have to do is remove the first and last "" or '' with some simple regex and .trim or .replace .

For whatever reason, it's not removing it for me. I have tried countless regex examples online that supposedly trim the first and last character, only the first and last character if they are "" or '' without any success.

Code:

$('#idealMatBtn').click(function (e) {
    var xmlSTR = '<?xml version="1.0" encoding="UTF-8"?><!DOCTYPE cXML SYSTEM "http://xml.cxml.org/schemas/cXML/1.2.014/cXML.dtd"><cXML timestamp="2015-06-12T08:30:00" xml:lang="en-US"> <Header> <From> <Credential domain="NetworkID"> <Identity>EU019985</Identity> </Credential> </From> <To> <Credential domain="DUNS"> <Identity>Ideal Supply Test</Identity> </Credential> </To> <Sender> <Credential domain="NetworkID"> <Identity>Ideal Supply Test</Identity> <SharedSecret>Ideal</SharedSecret> </Credential> <UserAgent>eProcurement-System 1.0</UserAgent> </Sender> </Header> <Request> <PunchOutSetupRequest operation="create"> <BuyerCookie>[Unique-Generated-Identifier-from-eProcurement-System]</BuyerCookie> <Extrinsic name="FirstName">John</Extrinsic> <Extrinsic name="LastName">Smith</Extrinsic> <Contact role="endUser"> <Name xml:lang="en-US">john</Name> <Email>smith+john@greenwingtechnology.com</Email> </Contact> <BrowserFormPost> <URL>https://test-sys.greenwingtech-system.com/punchout/return</URL> </BrowserFormPost> </PunchOutSetupRequest> </Request></cXML>';
    xmlSTR = xmlSTR.toString().replace(/(^"|"$)/g, '');
    $.ajax({
        type : "POST",
        dataType : "xml",
        url : "https://postDataToThisURL.do",
        data : "xmlSTR",
        contentType : "text/xml",
        cache : false,
        processData : false,
        success: function (data) {
            if (data) {
            url = $(data).find("URL").text();
            console.log(data)
            console.log(url)
            window.open(url, "popupWindow", "width=1000,height=600,scrollbars=yes");              
            }
         else {
            // do something
         }
        }
    });
    e.preventDefault();
});

Answer 1

Remove the quotes from this line:

data : "xmlSTR",

...to make it:

data : xmlSTR,

The way you had it, you were setting the data value to the literal string "xmlSTR" , ie, the characters x, m, l, S, T, R. You want to set it to the variable xmlSTR .