Javascript

軟體工程 CoffeeScript gets URL parameters for HTML select tags' multiple options

By Howard Lee 22 March 2016

Use CoffeeScript and JQuery to bind click event at website for getting parameters of a form at URL. In someone.js.coffee file. The following example is modified from reference 1,2,3 and 4 to meet my need. get_parameters_from_url = -> aryParams = {} # Initial an empty object rawVars = window.location.search.substring(1).split("&") #window is used to getting global variables of browsers in coffeescript. location.search is the query string at URL including the question

軟體工程 Event-handling and function with JQuery in CoffeeScript | 在CoffeeScript裡使用JQuery Event-handling

By Howard Lee 17 March 2016

Wanna use functions, which are defined in files of coffeescript language, to change one of CSS attributes such as display when an user clicking a button or element at a web page? You can follow below instructions. At side of web page, for example: Write down a button of HTML 5 for triggering event <button type="button" name="btn-veggie-list" class="btn-veggie-list">Veggie list</button> Target HTML. For example, it’s an unordered list for items in

軟體工程 Put javascript codes at last part of body area in normal situations | 將Javascript code放在body標籤最後

By Howard Lee 01 February 2016

I learn a lesson that putting javascript codes/files into last part of body area in normal situations because javascript codes can actually access DOM in body tag area. If I put them in header area of html file, it won’t work as I expect. According to my friends' explanations, it runs first before the body renders complete in normal scenarios. I learn the lesson when I was trying to generate

學習閱讀書《深入淺出JavaScript》的心得

By Howard Lee 31 August 2014

稍早因為想學網頁設計，故嘗試閱讀其他人作品的程式碼和動手做作品，過程發現自己辨認Javascript的bug時間拖很久，一天才找出一個，而且

學習 javascript學習記錄

By Howard Lee 12 August 2014

學著自建一個網站服務，本次進度分為兩點：第一點是修正我在Rails controller method自定義的錯誤，第二點是自寫coffeescript檔案，取得

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