From 1bc888007bdabb0f35429db8d798567aad1c4a74 Mon Sep 17 00:00:00 2001 From: Valentin Popov Date: Thu, 31 May 2018 06:36:28 +0400 Subject: Other script connection Signed-off-by: Valentin Popov --- _includes/javascript.html | 77 +-------------------------------------------- assets/javascript/script.js | 74 +++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 75 insertions(+), 76 deletions(-) create mode 100644 assets/javascript/script.js diff --git a/_includes/javascript.html b/_includes/javascript.html index 7b9e861..bb8d230 100644 --- a/_includes/javascript.html +++ b/_includes/javascript.html @@ -1,77 +1,2 @@ - + diff --git a/assets/javascript/script.js b/assets/javascript/script.js new file mode 100644 index 0000000..6eaf1a6 --- /dev/null +++ b/assets/javascript/script.js @@ -0,0 +1,74 @@ +'use strict'; + +/** + * @param {String} parameterName - Variable name + * @returns {String} Value of variable + * @description Searches for the value of the GET variable on the page. + */ +function findGetParameter(parameterName) { + var result = null; + var tmp = []; + + var items = window.location.search.substr(1).split('&'); + for (var index = 0; index < items.length; index++) { + tmp = items[index].split('='); + if (tmp[0] === parameterName) { + result = decodeURIComponent(tmp[1]); + } + } + + return result; +} + +/** + * @param {String} artistTrack - Artist of the track + * @param {String} titleTrack - Name of the track + * @description Updates the data on the page. Displays a pop-up window if the + * data has changed. + */ +function updateData(artistTrack, titleTrack) { + /* Gets items on the page */ + var displayElement = document.getElementById('display'); + var artistElement = document.getElementById('artist'); + var titleElement = document.getElementById('title'); + + if (artistElement.textContent !== artistTrack || titleElement.textContent !== titleTrack) { + /* Updates text */ + document.title = artistTrack + ' - ' + titleTrack; + artistElement.textContent = artistTrack; + titleElement.textContent = titleTrack; + + /* Displays a pop-up window */ + displayElement.style['animation-name'] = 'fadeIn'; + + setTimeout(function () { + /* Removes a pop-up window */ + displayElement.style['animation-name'] = 'fadeOut'; + }, 10000); + } +} + +var client = new XMLHttpRequest(); +var radio = findGetParameter('radio'); +var url = '//somafm.com/songs/' + radio + '.xml'; + +/* Processes response */ +client.onload = function () { + if (client.readyState === client.DONE) { + if (this.status === 200 && this.responseXML !== null) { + /* Gets current track */ + var current = this.responseXML.getElementsByTagName('song')[0]; + var artist = current.getElementsByTagName('artist')[0].textContent; + var title = current.getElementsByTagName('title')[0].textContent; + + /* Updates data */ + updateData(artist, title); + } + } +}; + +/* Update cycle */ +setInterval(function () { + client.open('GET', url); + client.send(); +}, 15000); -- cgit v1.2.3