https://bjyayy.com.cn/Scripts/jquery.unobtrusive-ajax.js

1/*!
2** Unobtrusive Ajax support library for jQuery
3** Copyright (C) Microsoft Corporation. All rights reserved.
4*/
5
6/*jslint white: true, browser: true, onevar: true, undef: true, nomen: true, eqeqeq: true, plusplus: true, bitwise: true, regexp: true, newcap: true, immed: true, strict: false */
7/*global window: false, jQuery: false */
8
9(function ($) {
10    var data_click = "unobtrusiveAjaxClick",
11        data_validation = "unobtrusiveValidation";
12
13    function getFunction(code, argNames) {
14        var fn = window, parts = (code || "").split(".");
15        while (fn && parts.length) {
16            fn = fn[parts.shift()];
17        }
18        if (typeof (fn) === "function") {
19            return fn;
20        }
21        argNames.push(code);
22        return Function.constructor.apply(null, argNames);
23    }
24
25    function isMethodProxySafe(method) {
26        return method === "GET" || method === "POST";
27    }
28
29    function asyncOnBeforeSend(xhr, method) {
30        if (!isMethodProxySafe(method)) {
31            xhr.setRequestHeader("X-HTTP-Method-Override", method);
32        }
33    }
34
35    function asyncOnSuccess(element, data, contentType) {
36        var mode;
37
38        if (contentType.indexOf("application/x-javascript") !== -1) {  // jQuery already executes JavaScript for us
39            return;
40        }
41
42        mode = (element.getAttribute("data-ajax-mode") || "").toUpperCase();
43        $(element.getAttribute("data-ajax-update")).each(function (i, update) {
44            var top;
45
46            switch (mode) {
47            case "BEFORE":
48                top = update.firstChild;
49                $("<div />").html(data).contents().each(function () {
50                    update.insertBefore(this, top);
51                });
52                break;
53            case "AFTER":
54                $("<div />").html(data).contents().each(function () {
55                    update.appendChild(this);
56                });
57                break;
58            default:
59                $(update).html(data);
60                break;
61            }
62        });
63    }
64
65    function asyncRequest(element, options) {
66        var confirm, loading, method, duration;
67
68        confirm = element.getAttribute("data-ajax-confirm");
69        if (confirm && !window.confirm(confirm)) {
70            return;
71        }
72
73        loading = $(element.getAttribute("data-ajax-loading"));
74        duration = element.getAttribute("data-ajax-loading-duration") || 0;
75
76        $.extend(options, {
77            type: element.getAttribute("data-ajax-method") || undefined,
78            url: element.getAttribute("data-ajax-url") || undefined,
79            beforeSend: function (xhr) {
80                var result;
81                asyncOnBeforeSend(xhr, method);
82                result = getFunction(element.getAttribute("data-ajax-begin"), ["xhr"]).apply(this, arguments);
83                if (result !== false) {
84                    loading.show(duration);
85                }
86                return result;
87            },
88            complete: function () {
89                loading.hide(duration);
90                getFunction(element.getAttribute("data-ajax-complete"), ["xhr", "status"]).apply(this, arguments);
91            },
92            success: function (data, status, xhr) {
93                asyncOnSuccess(element, data, xhr.getResponseHeader("Content-Type") || "text/html");
94                getFunction(element.getAttribute("data-ajax-success"), ["data", "status", "xhr"]).apply(this, arguments);
95            },
96            error: getFunction(element.getAttribute("data-ajax-failure"), ["xhr", "status", "error"])
97        });
98
99        options.data.push({ name: "X-Requested-With", value: "XMLHttpRequest" });
100
101        method = options.type.toUpperCase();
102        if (!isMethodProxySafe(method)) {
103            options.type = "POST";
104            options.data.push({ name: "X-HTTP-Method-Override", value: method });
105        }
106
107        $.ajax(options);
108    }
109
110    function validate(form) {
111        var validationInfo = $(form).data(data_validation);
112        return !validationInfo || !validationInfo.validate || validationInfo.validate();
113    }
114    window.onload = function(){
115        $("body").on("click", "a[data-ajax=true]", function (evt) {
116            evt.preventDefault();
117            asyncRequest(this, {
118                url: this.href,
119                type: "GET",
120                data: []
121            });
122        });
123
124        $("form[data-ajax=true]").on("click", "input[type=image]", function (evt) {
125            var name = evt.target.name,
126                $target = $(evt.target),
127                form = $target.parents("form")[0],
128                offset = $target.offset();
129
130            $(form).data(data_click, [
131                { name: name + ".x", value: Math.round(evt.pageX - offset.left) },
132                { name: name + ".y", value: Math.round(evt.pageY - offset.top) }
133            ]);
134
135            setTimeout(function () {
136                $(form).removeData(data_click);
137            }, 0);
138        });
139
140        $("form[data-ajax=true]").on("click", ":submit", function (evt) {
141            var name = evt.target.name,
142                form = $(evt.target).parents("form")[0];
143
144            $(form).data(data_click, name ? [{ name: name, value: evt.target.value }] : []);
145
146            setTimeout(function () {
147                $(form).removeData(data_click);
148            }, 0);
149        });
150
151        $("body").on("submit", "form[data-ajax=true]", function (evt) {
152            var clickInfo = $(this).data(data_click) || [];
153            evt.preventDefault();
154            if (!validate(this)) {
155                return;
156            }
157            asyncRequest(this, {
158                url: this.action,
159                type: this.method || "GET",
160                data: clickInfo.concat($(this).serializeArray())
161            });
162        });
163    }
164}(jQuery));