您将使用此:

<script src="your_file.js"></script>

轻松!

可以动态地创建一个JavaScript标签并将其添加到来自其他JavaScript代码的HTML文档中,这将加载针对JavaScript文件。

function includeJs(jsFilePath) {
    var js = document.createElement("script");

    js.type = "text/javascript";
    js.src = jsFilePath;

    document.body.appendChild(js);
}

includeJs("/path/to/some/file.js");

var s=["Hscript.js","checkRobert.js","Hscript.js"];
for(i=0;i<s.length;i++){
  var script=document.createElement("script");
  script.type="text/javascript";
  script.src=s[i];
  document.getElementsByTagName("head")[0].appendChild(script)
};

保持它好,短,简单,可持续的! :]

// Third-party plugins / script (don't forget the full path is necessary)
var FULL_PATH = '', s =
[
    FULL_PATH + 'plugins/script.js'      // Script example
    FULL_PATH + 'plugins/jquery.1.2.js', // jQuery Library
    FULL_PATH + 'plugins/crypto-js/hmac-sha1.js',      // CryptoJS
    FULL_PATH + 'plugins/crypto-js/enc-base64-min.js'  // CryptoJS
];

function load(url)
{
    var ajax = new XMLHttpRequest();
    ajax.open('GET', url, false);
    ajax.onreadystatechange = function ()
    {
        var script = ajax.response || ajax.responseText;
        if (ajax.readyState === 4)
        {
            switch(ajax.status)
            {
                case 200:
                    eval.apply( window, [script] );
                    console.log("library loaded: ", url);
                    break;
                default:
                    console.log("ERROR: library not loaded: ", url);
            }
        }
    };
    ajax.send(null);
}

// Initialize a single load
load('plugins/script.js');

// Initialize a full load of scripts
if (s.length > 0)
{
    for (i = 0; i < s.length; i++)
    {
        load(s[i]);
    }
}

这个代码只是一个短暂的功能例子,可能需要额外的功能功能,以便在任何(或提供)平台上提供完整的支持。

与 $.getScript 和实际上任何其他解决方案需要一个呼叫回复,当加载完成时的问题是,如果你有多个文件使用它,并依赖对方,你已经没有办法知道什么时候所有的脚本被加载(一旦它们被纳入多个文件)。

文件3JS

var f3obj = "file3";

// Define other stuff

文件2JS:

var f2obj = "file2";
$.getScript("file3.js", function(){

    alert(f3obj);

    // Use anything defined in file3.
});

此分類上一篇: JS

$.getScript("file2.js", function(){
    alert(f3obj); //This will probably fail because file3 is only guaranteed to have loaded inside the callback in file2.
    alert(f2obj);

    // Use anything defined in the loaded script...
});

您可以尝试使用 $.when 检查一系列丢失的对象,但现在您正在做这一点在每个文件和文件2 将被视为加载,一旦 $.when 执行,而不是当呼叫回复执行,所以文件1 仍然继续执行之前文件3 被加载,这真的仍然有相同的问题。

我喜欢延长jQuery的想法,但显然你不需要。

在呼叫document.writeln之前,它检查以确保脚本已经没有被加载,通过评估所有脚本元素。

而不是这个方法,你可以尝试修改 jQuery readyList,但这似乎是一个更糟糕的解决方案。

解决方案:

$.extend(true,
{
    import_js : function(scriptpath, reAddLast)
    {
        if (typeof reAddLast === "undefined" || reAddLast === null)
        {
            reAddLast = true; // Default this value to true. It is not used by the end user, only to facilitate recursion correctly.
        }

        var found = false;
        if (reAddLast == true) // If we are re-adding the originating script we do not care if it has already been added.
        {
            found = $('script').filter(function () {
                return ($(this).attr('src') == scriptpath);
            }).length != 0; // jQuery to check if the script already exists. (replace it with straight JavaScript if you don't like jQuery.
        }

        if (found == false) {

            var callingScriptPath = $('script').last().attr("src"); // Get the script that is currently loading. Again this creates a limitation where this should not be used in a button, and only before document.ready.

            document.writeln("<script type='text/javascript' src='" + scriptpath + "'></script>"); // Add the script to the document using writeln

            if (reAddLast)
            {
                $.import_js(callingScriptPath, false); // Call itself with the originating script to fix the order.
                throw 'Readding script to correct order: ' + scriptpath + ' < ' + callingScriptPath; // This halts execution of the originating script since it is getting reloaded. If you put a try / catch around the call to $.import_js you results will vary.
            }
            return true;
        }
        return false;
    }
});

使用:

var f3obj = "file3";

// Define other stuff
$(function(){
    f3obj = "file3docready";
});

文件2:

$.import_js('js/file3.js');
var f2obj = "file2";
$(function(){
    f2obj = "file2docready";
});

文件1:

$.import_js('js/file2.js');

// Use objects from file2 or file3
alert(f3obj); // "file3"
alert(f2obj); // "file2"

$(function(){
    // Use objects from file2 or file3 some more.
    alert(f3obj); //"file3docready"
    alert(f2obj); //"file2docready"
});

如果你发现有两个或多个脚本在被召唤时占据相同功能,我们不能同时包含它们,我们需要通过用户选择进行动态操作。

在 jQuery 中的另一个文件使用 $.getScript 工作,因为脚本不会默认隐藏。

HTML

<select class="choice">
  <option value="script1" selected>Script-1</option>
  <option value="script2">Script-2</option>
</select>

雅各布斯

$(".choice").change(on_change);

var url = "https://example.com";
$.url1 = url + "/script1.js";
$.url2 = url + "/script2.js";

function on_change() {
  if ($(".choice").val()=="script1") {
    script1();
  } else {
    script2();
  }
}

// script1
function script1() {
  $.getScript($.url1, function( data, textStatus, jqxhr ) {
    // Execute here
  });
}

// script2
function script2() {
  $.getScript($.url2, function( data, textStatus, jqxhr ) {
    // Execute here
  });
}