Created
August 11, 2014 01:34
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <meta charset="utf-8"> | |
| <title>JS Bin</title> | |
| </head> | |
| <body> | |
| <div> | |
| <form id="print-form"> | |
| <p> | |
| <input type="radio" name="color" value="red">red | |
| <input type="radio" name="color" value="blue">blue | |
| <input type="radio" name="color" value="black" checked>black | |
| </p> | |
| <input id="print-text" type="text" name="text"> | |
| <button>print</button> | |
| </form> | |
| <hr> | |
| <div id="print-area"> | |
| test | |
| </div> | |
| </div> | |
| </body> | |
| </html> |
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| var PrintJob = function(color, content) { | |
| var job = Object.create(PrintJob.prototype); | |
| job.color = color; | |
| job.content = content; | |
| return job; | |
| }; | |
| PrintJob.prototype = { | |
| execute: function(place){ | |
| var elm = document.createElement('p'); | |
| elm.style.color = this.color; | |
| elm.innerHTML = this.content; | |
| document.getElementById(place).appendChild(elm); | |
| } | |
| }; | |
| var Printer = function(placeId) { | |
| var p = Object.create(Printer.prototype); | |
| p.placeId = placeId; | |
| p.jobs = []; | |
| return p; | |
| }; | |
| Printer.prototype = { | |
| addJob: function(job){ | |
| this.jobs.push(job); | |
| }, | |
| run: function() { | |
| var that = this; | |
| this._interval = setInterval(function() { | |
| if ( that.jobs.length > 0) { | |
| var job = that.jobs.shift(); | |
| job.execute(that.placeId); | |
| } | |
| }, 1000); | |
| } | |
| }; | |
| (function() { | |
| var printer = Printer('print-area'); | |
| printer.run(); | |
| var btn = document.querySelector("#print-form button"); | |
| btn.addEventListener('click', function(e) { | |
| e.preventDefault(); | |
| var radios = document.getElementsByName('color'); | |
| var color; | |
| for (var i = 0; i < radios.length; i++) { | |
| if (radios[i].checked) { | |
| color = radios[i].value; | |
| break; | |
| } | |
| } | |
| var text = document.getElementById('print-text'); | |
| if (text.value) { | |
| var job = PrintJob(color, text.value); | |
| printer.addJob(job); | |
| } | |
| }, false); | |
| btn = null; | |
| })(); |
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