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@hejrobin
Created November 13, 2017 23:04
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(function( global ) {
var scriptRootNode;
var scriptNamespace = 'embed';
var scriptNameRegex = /.*embed.js/;
var scriptPath = 'https://domain.tld/widget-app.js';
var stylePath = 'https://domain.tld/widget-app.css';
if ( ! global[ scriptNamespace ] )
global[ scriptNamespace ] = {};
var scriptEmbed = global[ scriptNamespace ];
if ( ! scriptEmbed.isEmbedded )
scriptEmbed.isEmbedded = false;
var scriptTags = document.getElementsByTagName( 'script' );
var loadJavaScriptResource = function( resourcePath, onLoadCallback ) {
var scriptNode = document.createElement( 'script' );
scriptNode.type = 'text/javascript';
scriptNode.src = resourcePath;
scriptNode.charset = 'utf-8';
scriptNode.async = false;
if ( typeof onLoadCallback === 'function' )
scriptNode.onload = onLoadCallback;
document.getElementsByTagName( 'head' )[ 0 ].appendChild( scriptNode );
};
var loadStylesheetResource = function( resourcePath ) {
var styleNode = document.createElement( 'link' );
styleNode.type = 'text/css';
styleNode.rel = 'stylesheet';
styleNode.href = resourcePath;
document.getElementsByTagName( 'head' )[ 0 ].appendChild( styleNode );
};
if ( scriptTags.length > 0 ) {
for ( var i = 0, l = scriptTags.length; i < l; i++ ) {
scriptRootNode = scriptTags[ i ];
var matches = scriptTag.src.match( scriptNameRegex );
if ( matches !== null && matches.length > 0 && scriptEmbed.isEmbedded === false ) {
loadJavaScriptResource( scriptPath );
loadStylesheetResource( stylePath );
scriptEmbed.isEmbedded = true;
break;
}
}
}
global[ scriptNamespace ] = scriptEmbed;
}( this ));
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