jQuery 3 slim ajax basic example

问题:

I'm new to jQuery 3. The following is a basic fiddle, working with previous versions of jQuery, but does not work with jQuery 3

$(function() {
    $.ajax({
        url: '/echo/json',
        type: 'GET',
        dataType: 'json',
        success: function(data) {
            console.log(data)
        }
    });
})

In the console, I get this error:

jquery-3.1.1.slim.min.js:2 jQuery.Deferred exception: $.ajax is not a function TypeError: $.ajax is not a function

jquery-3.1.1.slim.min.js:2 Uncaught TypeError: $.ajax is not a function(…)

Why ?

回答1:

jQuery 3 slim version doesn't support ajax.

According to the release docs,

Along with the regular version of jQuery that includes the ajax and effects modules, we’re releasing a “slim” version that excludes these modules. All in all, it excludes ajax, effects, and currently deprecated code.

To use .ajax method, simply use the full version one.

Here's the working fiddle