jQuery getScript returns an parse error exception

问题

I'm trying to load two scripts with the $.getScript function of getting Google Map script, then after that is loaded, I get another script (goMap) which makes map applets easily to be made.

However, when loaded, the first script of getting Google Map API is good, then the second script returns a parse error and shows this:

TypeError: 'undefined' is not a constructor'

Yet, I don't know where that is referencing from or which line, I think it must be trying to execute the Geocoder on this file (first line after (function($){:

http://www.pittss.lv/jquery/gomap/js/jquery.gomap-1.3.2.js

Here is my code:

$.getScript('http://maps.google.com/maps/api/js?sensor=true').done(function()
{
    $.getScript('../js/gomap.js').done(function()
    {
            // this never gets called
            alert('gomap loaded');
    }).fail(function(jqxhr, settings, exception)
    {
        alert(exception); // this gets shown
    });
}).fail(function()
{
    alert('failed to load google maps');
});

I tried changing the AJAX settings to set async to false, but it didn't help at all.

回答1:

The error is caused by the fact that the Google Maps API expects to be loaded in the head, using <script src="http://maps.google.com/maps/api/js?sensor=true"></script>.

If you cannot do that for some reason, there's still hope. The Google Maps API does not work, because it uses document.write to inject a dependency in the page. To get the code to work, you can overwrite the native document.write method.

Demo: http://jsfiddle.net/ZmtMr/

var doc_write = document.write; // Remember original method;
document.write = function(s) {$(s).appendTo('body')};
$.getScript('http://maps.google.com/maps/api/js?sensor=true').done(function() {
    $.getScript('../js/gomap.js').done(function() {
        alert('gomap loaded');
        document.write = doc_write; // Restore method
    }).fail(function(jqxhr, settings, exception) {
        alert(exception); // this gets shown
        document.write = doc_write; // Restore method
    });
}).fail(function() {
    alert('failed to load google maps');
});

回答2:

@lolwut Try

$.getScript('http://maps.google.com/maps/api/js?sensor=true').done(function()
{
    alert(11);
    $.getScript('http://www.pittss.lv/jquery/gomap/js/jquery.gomap-1.3.2.js').done(function()
    {
            // this never gets called
            alert('gomap loaded');
    }).fail(function(jqxhr, settings, exception)
    {
        alert(exception); // this gets shown
    });
}).fail(function()
{
    alert('failed to load google maps');
});

If this works then you're relative path ../js/gomap.js is wrong!

来源：https://stackoverflow.com/questions/9343666/jquery-getscript-returns-an-parse-error-exception

标签

jquery

ajax

google-maps

getscript