我如何在另一个JavaScript文件中添加一个JavaScript文件,类似于CSS中的 @import?
当前回答
您将使用此:
<script src="your_file.js"></script>
轻松!
其他回答
您可以使用我的 loadScript ES 模块来加载 JavaScript 文件。
使用:
在您的标签中,包含下列代码:
<script src="https://raw.githack.com/anhr/loadScriptNodeJS/master/build/loadScript.js"></script>
或
<script src="https://raw.githack.com/anhr/loadScriptNodeJS/master/build/loadScript.min.js"></script>
现在,您可以使用 window.loadScript 加载您的 JavaScript 文件。
loadScript.async( src, [选项] )
无同步加载 JavaScript 文件。
src:一个外部脚本文件或脚本文件名序列的URL。
选项:以下选项可用
onload: function () The onload event occurs when a script has been loaded. Default is undefined.
onerror: function ( str, e ) The onerror event occurs when an error has been occurred. The default is undefined.
str: error details
e: event
appendTo: The node to which the new script will be append. The default is the head node.
例如
loadScript.async( "JavaScript.js",
{
onload: function () {
var str = 'file has been loaded successfully';
console.log( str );
},
onerror: function ( str, e ) {
console.error( str );
},
} );
使用的例子
我只是写了这个JavaScript代码(使用DOM操作的Prototype):
var require = (function() {
var _required = {};
return (function(url, callback) {
if (typeof url == 'object') {
// We've (hopefully) got an array: time to chain!
if (url.length > 1) {
// Load the nth file as soon as everything up to the
// n-1th one is done.
require(url.slice(0, url.length - 1), function() {
require(url[url.length - 1], callback);
});
} else if (url.length == 1) {
require(url[0], callback);
}
return;
}
if (typeof _required[url] == 'undefined') {
// Haven't loaded this URL yet; gogogo!
_required[url] = [];
var script = new Element('script', {
src: url,
type: 'text/javascript'
});
script.observe('load', function() {
console.log("script " + url + " loaded.");
_required[url].each(function(cb) {
cb.call(); // TODO: does this execute in the right context?
});
_required[url] = true;
});
$$('head')[0].insert(script);
} else if (typeof _required[url] == 'boolean') {
// We already loaded the thing, so go ahead.
if (callback) {
callback.call();
}
return;
}
if (callback) {
_required[url].push(callback);
}
});
})();
使用:
<script src="prototype.js"></script>
<script src="require.js"></script>
<script>
require(['foo.js','bar.js'], function () {
/* Use foo.js and bar.js here */
});
</script>
地址: http://gist.github.com/284442.
var js = document.createElement("script");
js.type = "text/javascript";
js.src = jsFilePath;
document.body.appendChild(js);
这里是一个基本插件,允许您使用 @import “path/to/file.js”; syntax 在任何文件中,包括JavaScript文件。
它可以通过 npm 安装安装: https://npmjs.org/package/grunt-import
此脚本将添加 JavaScript 文件到任何其他 <script> 标签的顶部:
(function () {
var li = document.createElement('script');
li.type = 'text/javascript';
li.src = "http://ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js";
li.async = true;
var s = document.getElementsByTagName('script')[0];
s.parentNode.insertBefore(li, s);
})();