cesium/Source/Core/isDataUri.js

CesiumJS is a JavaScript library for creating 3D globes and 2D maps in a web browser without a plugin.

define([
        './Check'
    ], function(
        Check) {
    'use strict';

    var dataUriRegex = /^data:/i;

    /**
     * Determines if the specified uri is a data uri.
     *
     * @exports isDataUri
     *
     * @param {String} uri The uri to test.
     * @returns {Boolean} true when the uri is a data uri; otherwise, false.
     *
     * @private
     */
    function isDataUri(uri) {
        //>>includeStart('debug', pragmas.debug);
        Check.typeOf.string('uri', uri);
        //>>includeEnd('debug');

        return dataUriRegex.test(uri);
    }

    return isDataUri;
});