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JavaScript - How To Read Streaming Data In Javascript
I wants to access server web page which data is continuously growing(streaming data), I want to buffered some of that data write it in responseText then again get next buffered data write it and so on (in AJAX).
Is it possible? if yes how to do that? Similar TutorialsOk, I am currently working on an announcements portlet for a dashboard that my team is creating. What is desired is to be able to have this portlet access a stored text file (file can be edited so content is subject to change) that will have all the information needed for these announcements. The JavaScript will then write it into a html file. I am a novice at html, and javascript; and i was hoping that if anyone had any advice, ideas, or a helpful link that could point me in the right direction I would much appreciate it. Hi, i have a question, is JavaScript can read an external file? i have an ear file, can it read external file without the external file compile together in the ear file? can we do so? I am having trouble with JavaScript code and do not know why it is not working. I have the code I think is right but it is not showing up in my browser when run. Any ideas? Also are there any other ways to read in an xml file using javascript? please list if so. This is a must-read for all users posting to the JavaScript forum, especially if you're looking to get help. A lot of you are posting in a manner that makes it extremely difficult- if not impossible- to respond to. Below are a list of posting guidelines and tips we ask that you please read- and FOLLOW- when asking for help: 1) Type in a subject that summarizes your question! - The fastest way to turn off other members wanting to help you is to type an incomplete or silly subject for your post. Examples of poor subject titles include: - "Help!" - "I'm a newbie...please!" - "Is this possible using JavaScript?" - "loops" - "Urgent...deadline tomorrow!" - "A challenge for you JavaScript masters" The above subjects either have absolutely nothing to do with the question itself, or are grossly incomplete (ie: "loops"). When asking for help, enter a subject that summarizes your question, period! Don't use silly, incomplete, or "bait" subjects. 2) Be descriptive and articulate when asking your question! Some of you are posting as if we're all psychics, and are supposed to grasp your question with the little or confusing information you've provided in your question. We cannot read your mind, and putting up a post like "Can someone help me with arrays?" or "How can I get the slide-in slideshow to work on my site?" is not nearly enough information to go by. What exactly do you want to know about arrays? Which slide-in slideshow are you referring to (the one written by Bill Gates?)? Set us up with some crucial background information, what you want to do, and what the problem is. Be concise and precise. Also when posting, understand that you're trying to convince others to help you. Be articulate and have respect for the English language! Check for spelling/grammar mistakes, and try and format your question and code in an easily legible manner. Big tip: Use the preview button often. Bottom line- put yourself in our shoes, and try and phrase the question so it's clear and easy to respond to. 3) Do your homework first. Only post the part of the script you're having trouble with! There are generally two types of people- ones that simply dump their entire page or problem and expect everyone to spend hours solving everything for them, and those that do their own homework first, and only ask very specific, manageable questions. The later invariably gets more and better responses from others. When you're lazy, do not expect us to be hardworking for you. As an example, lets say you're working on a long script that uses the "switch" statement of JavaScript, and it's returning errors. You could either: i) Post the entire script and simply say "Please debug this script for me!" ii) Or, localize the problem yourself first and post instead "Can someone tell me the syntax of the switch statement in JavaScript?" The second question will get a LOT more quality responses, as it is concise, manageable, and not overwhelming. Remember, ask for the world, and you'll get nothing. Ask for a little, and you'll get a lot. 4) Use the search feature often to make sure your question isn't already answered- The longer this forum has been online, the more solutions it accumulates. Always search past posts first (using the search link to your upper right) to make sure your question isn't already answered. Use 1-2 keywords as the search terms. 5) Know the capabilities and limits of JavaScript before posting. Please familiarize yourself with what JavaScript can- and cannot do- before posting. Many people are posting JS questions that simply cannot be accomplished using the language, period. JavaScript is a client side language, and cannot manipulate the server end in any way, such as saving data to the server, accessing a database etc. JavaScript works strictly on the user end, such as popping up a window, applying an image rollover effect, or determining user screen resolution (*without* the ability to pass this info back to the server). If JavaScript is completely new to you, please familiarize yourself somewhat with the language, by visiting the below links - JavaScript questions and answers list - JavaScript tutorials - Advanced JavaScript tutorials - Pre-made JavaScripts (illustrates typical JS applications) 6) Be appreciative and follow up when getting a response. Everyone here is volunterring their time to help out others. The least you can do is be appreciative and follow up when getting a helpful response. If you've solved your problem, let people know so they don't continue spending time on your question. Saying a little "thank you" goes a long way. Hello, Is there a way with JavaScript to easily detect which mobile browser is being used? I would not normally ask this, but because we do not have the time or budget to implement any back end detection scripting it is our only option right now! I don't think we will need to detect which version of the browser, or which revision of the phone is used - just need to target each family to deliver the proper video type. hi , i am trying to pass a javascript variable into URL ..but not getting the value.. var newID = 2; row.insertCell(6).innerHTML = "<a href=Update_Gate.cfm?GateIdVar=newID>Edit Gate</a>"; i am getting "newID" in Update_Gate.cfm page ... i want to pass this javascript variable in url and read it on the other page as form field value any help !! Hi, Using the following javascript: Code: <script type="text/javascript" src="http://twitter.com/javascripts/blogger.js"> </script> <script type="text/javascript" src="http://twitter.com/statuses/user_timeline/USERNAME.json?callback=twitterCallback2&count=1"> </script> I am able to display the latest tweet of a user into a div. However, I have a user-generated database of username's stored in an XML file and would like to list each username's latest tweet on a single page. Any thoughts on how I might be able to achive this? I'm new to javascript so forgive my stupidity. Hi.. I just want to know how does it happen that when I scan the barcode using barcode scanner it will automatically put on the first textbox, then the focus will go to the next textbox and on the last textbox will automatically save the data to database. here is my sample form. PHP Code: <?php error_reporting(0); date_default_timezone_set("Asia/Singapore"); //set the time zone $con = mysql_connect('localhost', 'root',''); if (!$con) { echo 'failed'; die(); } mysql_select_db("mes", $con); $sr_date =date('Y-m-d H:i:s'); $sql = "SELECT sr_number FROM receiving_materials ORDER BY sr_date DESC LIMIT 1"; $result = mysql_query($sql, $con); if (!$result) { echo 'failed'; die(); } $total = mysql_num_rows($result); if ($total <= 0) { $currentSRNum = 1; $currentYear = (int)(date('y')); $currentMonth = (int)(date('m')); $currentDay = (int)(date('d')); $currentSRYMD = substr($row['sr_number'], 0, 6); $currentYMD = date("ymd"); if ($currentYMD > $currentSRYMD) { $currentSRNum = 1; } else { $currentSRNum += 1; } } else { //------------------------------------------------------------------------------------------------------------------ // Stock Number iteration.... $row = mysql_fetch_assoc($result); $currentSRNum = (int)(substr($row['sr_number'],0,3)); $currentSRYear = (int)(substr($row['sr_number'],2,2)); $currentSRMonth = (int)(substr($row['sr_number'],0,2)); $currentSRNum = (int)(substr($row['sr_number'],6,4)); $currentYear = (int)(date('y')); $currentMonth = (int)(date('m')); $currentDay = (int)(date('d')); $currentSRYMD = substr($row['sr_number'], 0, 6); $currentYMD = date("ymd"); if ($currentYMD > $currentSRYMD) { $currentSRNum = 1; } else { $currentSRNum += 1; } } //------------------------------------------------------------------------------------------------------------------ $yearMonth = date('ymd'); $currentSR = $currentYMD . sprintf("%04d", $currentSRNum); ?> <html> <title>Receiving Materials</title> <head> <link rel="stylesheet" type="text/css" href="kanban.css" /> <style type="text/css"> #SR_date{ position: relative; font-family: Arial, Helvetica, sans-serif; font-size: .9em; margin-left: 10px; width: auto; height: auto; float: left; top : 10px; } </style> </head> <body> <form name="receiving_form" action="<?php echo $_SERVER['PHP_SELF']; ?>" method="post"> <div id="SR_date"> <label>Date :</label> <input type="text" name="sr_date" value="<?php echo $sr_date; ?>" size="16" readonly="readonly" style="border: none;"> </div> <div id="SR_number"> <label>RM# :</label> <input type="text" name="sr_number" value="<?php echo $currentSR; ?>" size="9" readonly="readonly" style="font-weight: bold; border: none;"> </div> <div id="SI_number"> <label class="LLabelRM">SI/DR# :</label> <input type="text" name="si_num" id="si_num" class="LFieldRM" value="" size="25"> <br/></br/> <label class="LLabelRM">Supplier Name :</label> <input type="text" name="s_name" id="s_name" class="LFieldRM" value="" size="25"> <br/></br/> <label class="LLabelSecRM">PO # :</label> <input type="text" name="po_num" id="po_num" class="LFieldSecRM" value="" size="25"> <label class="LLabelSecRM">Quantity :</label> <input type="text" name="qty" id="qty" class="LFieldSec1RM" value="" size="25"> <br/> <br/> <label class="LLabelSecRM">Material Code :</label> <input type="text" name="mat_code" id="mat_code" class="LFieldSecRM" value="" size="25"> <label class="LLabelSecRM">Material Desc. :</label> <input type="text" name="mat_desc" id="mat_desc" class="LFieldSec1RM" value="" size="25"> <br/></br/> <label class="LLabelSecRM">WH Code :</label> <input type="text" name="wh_code" id="wh_code" class="LFieldSecRM" value="" size="25"> <label class="LLabelSecRM">BIN Location :</label> <input type="text" name="bin_loc" id="bin_loc" class="LFieldSec1RM" value="" size="25"> </div> </form> </body> </html> Thank you Hey there i dunno if i should post on this section but well, i'm creating a website and i want to stream nba games. I found this site http://www.nbaliveonline.com/streaming/ wich usually stream games, and i want to use their streams on my site, i would like to know if its possible and how i can do it by copying any code or something, is there any way to do it ? Basicly i just want their video player streaming games into my site... thanks Hi guys, right now I'm trying to write a comet application, that communicates with a server by iframe streaming. The problem is, that in my applications the browser does the "loading thing" (loading bar, loading cursor). I have seen many applications, where iframe streaming is used, without any loading signs in the browser. For example: http://www.stream-hub.com/demo/StockDemo/index.html http://orbited.org/wiki/LiveHelp http://lib1.freeliberator.com/exampl...e-example.html (some examples use XHR streaming) Could somebody tell me how to do it without the loading stuff? Thanks and best regards, Markus Hello, I used a standard orderform which I expanded. With this form people can order some products. But when I submit the form with data from a javascript the mail is empty. Can anyone help? I am just a beginner.... You can try the form here Thanks in advance! Hein. i have know that JavaScript the data types are either:Primitive (number", "string", "boolean", "undefined",null), or Non-primitive (objects). but why the return values of using typeof can be "function"? i feel this collide with the above. Hi guys I d like to know that is it possible to submit data to the server or to an email from the client using JAVAScript? I know that javascript is clientside,but if you work with Facebook, when you chat, just view its source, u ll see that is using Javascript? I d like to know,how is it possible? I cannot figure out how to total my column data correctly with JavaScript. The code I have will enter a new row, but it is not summing the columns. The new row is just filled with zeros. Code: function totalColumns() {
var tds = document.getElementById('users_table').getElementsByTagName('td');
var sum = 0;
for(var i = 0; i < tds.length; i ++) {
if(tds[i].className == 'dataRow') {
sum += isNaN(tds[i].innerHTML) ? 0 : parseInt(tds[i].innerHTML);
}
}
document.getElementById('users_table').innerHTML += '<tr><td>' + sum + '</td><td>' +sum+ '</td><td>' +sum + '</td></tr>';
alert ("Columns have been totalled and listed at the bottom of each");
} //end totalColumns
I can't figure out how to get the rows to total at all. Any insight would be appreciated! Thanks! HTML: Code: <script src="./include/js/drinkValidation.js" type="text/javascript"></script> <form name="add-drinks" action="include/add-drink.php" method="POST" onSubmit="return addDrinkFormValidation(this);" enctype="multipart/form-data" > <span id="colour" class='modify_form'> <label for='drinkColour'>Spirit Colour:</label> <br /> <select name='drinkColour' tabindex=1> <option value='' >None</option> <option value='R' >R</option> <option value='G' >G</option> <option value='Y' >Y</option> </select> </span> <div class='modify_form'> <label for='drinkType'>Type:</label> <br /> <select name='drinkType' tabindex=1 onChange="HideObjects(this.value)"> <option value="">Select a Drink type:</option> <option value='Cask' >Cask Ales</option> <option value='Guest' >Guest Ale</option> <option value='Lager' >Lager</option> <option value='Bottled Beers' >Bottled Beer</option> <option value='Wines' >Wine</option> <option value='Ciders' >Cider</option> <option value='Softs' >Soft</option> <option value='Spirits' >Spirit</option> </select> </div> <div id="drinkABV" class='modify_form'> <label for='drinkABV'>ABV:</label> <br /> <input name='drinkABV' size='2' tabindex=4 maxlength="4" placeholder="ie: 4.2"/> <label for='drinkABV'>%</label> </div> <div id="name"class='modify_form'> <label for='name'>Name:</label> <br /> <input name='name' size='25' tabindex=3 placeholder="Drink name"/> </div> <div id="drinkInfo" class='modify_form'> <label for='drinkInfo'>Description:</label> <br /> <textarea name='drinkInfo' rows='5' cols='30' maxlength='255' tabindex=5 placeholder="Max 255 characters"></textarea> </div> <div id="pint" class='modify_form'> <label for='drinkPintPrice'>Pint (£):</label> <br /> <input name='drinkPintPrice' size='10' tabindex=8 /> </div> <div id="halfpint" class='modify_form'> <label for='drinkHalfPrice'>Half Pint (£):</label> <br /> <input name='drinkHalfPrice' size='10' tabindex=7 /> </div> <div id="drinkSpecialPrice" class='modify_form'> <label for='drinkSpecialPrice'>Offer Price (£):</label> <br /> <input name='drinkSpecialPrice' size='10'tabindex=6 /> </div> <div id="drinkbottlePrice" class='modify_form'> <label for='drinkbottlePrice'>Bottle/Spirit Price (£):</label> <br /> <input name='drinkbottlePrice' size='10'tabindex=6 /> </div> <br /> <br /> <input type="file" name="cons_image" /> <br /> <br /> <div id='submit'> <input type='submit' value='Add New Drink' /> </div> <br /> <p><b>Please add the information you wish to add then click Add New Drink</b></p> </form> Javascript containing validation Code: var ck_abv = /[0-9]{1,2}\\.[0-9]{1}$/;
var ck_price = /[0-9]{1,2}\\.[0-9]{2}$/;
var ck_name = /^[A-Za-z0-9 ]{3,20}$/;
var ck_info = /^[A-Za-z0-9 ]{3,255}$/;
alert ("Im in the file");
function addDrinkFormValidation(form){
var type = form.drinkType.value;
var abv = form.drinkABV.value;
var name = form.name.value;
var info = form.drinkInfo.value;
var pint = form.pint.value;
var halfpint = form.halfpint.value;
var bottle = form.drinkbottleprice.value;
var offer = form.drinkSpecialprice.value;
var errors = [];
alert (form);
alert (type);
alert (abv);
alert (info);
alert (pint);
alert (halfpint);
alert ("Anything showing");
if(type==0){
errors[errors.length] = "Please select a drink type.";
}
if(!ck_name.test(name) || (name == "")){
errors[errors.length] = "Please enter a drink name.";
}
if(!ck_info.test(info) || (info == "")){
errors[errors.length] = "Please enter a drink description.";
}
if(!ck_abv.test(abv)){
errors[errors.length] = "Illegal character in ABV";
}
if(!ck_price.test(pint)){
errors[errors.length] = "Illegal character in pint";
}
if(!ck_price.test(halfpint)){
errors[errors.length] = "Illegal character in halfpint";
}
if(!ck_price.test(bottle)){
errors[errors.length] = "Illegal character in Bottle/Spirit Price";
}
if(!ck_price.test(offer)){
errors[errors.length] = "Illegal character in Offer price";
}
if (errors.length > 0) {
reportErrors(errors);
return false;
}
return false;
}
function reportErrors(errors){
var msg = "Please Enter Valid Data...\n";
for (var i = 0; i<errors.length; i++) {
var numError = i + 1;
msg += "\n" + numError + ". " + errors[i];
}
alert(msg);
}
For some reason i dont know why the javascript isnt reading the function even tho they are correctly named, the file is being read as the 1st test alert comes up. the 2nd one inside the function doesnt know. can anyone point in the right place or show me where i am going wrong. as you can see i have put both my entire form and and the java file up. so you can easily see what goes on #on a note i have multiple forms in a tab system if that has anything to do with it although i shouldnt see why it should. #oh and did i get my regex correct for ck_price e.g "9.99 or 10.99" and ck_abv eg "4.2 or 10.2 or 34" #im also using wampserver 2.1 with win7 and chrome if it's needed thanks ste Please help ... bit urgent I am creating a small automated system where front-end is html query form and back-end database is MS excel. both at local PC only & in a single folder. problem is like a survey form. continuous data entry, error correction, read/wite all these are included. I created a program upto first entry; but the second, third, ... entries and it is continuous. pl help me regards K.Kaniraj Hi, is it possible to create a script which exports data from a SQL server into MS Word? What i am trying to do is to make a system on my website that will grab Data from one or two different divs on one page and have it post it in an alert box on the homepage. http://killerz297.webs.com/events.html on that page i would like to be able to have javascript automatically grab the text from the description and paste it into the red box on this page: http://killerz297.webs.com/index.html what i have so far is on this page in the red box i have a script that countsdown how long until the event is away from the set time i put in it until the event starts at a set time it shows the event description, and then while the event is going on it says event in session, then after the event is over it says event no longer ongoing. but then i have to edit the script to the next event. I would like javascript, or what ever type of code it would take to do this to automatically grab the information. I would like for it to automatically switch the information to the next line when the current event is over and start a countdown from there. This is a lot of coding to do but i just am not THAT familiar with how to write javascript to do this myself. One other thing i would likkeeeee is for the red box on home page to disappear until it is 24 hours until next event, and then automatically close 1 hour after event gets over. Not a big deal if i can't get this but i would love it if someone could. okay finally, that is about it lol. If someone could help me with this i would appreciate it soo soo much! Thanks, hope someone could help me. I have some data on the client side in javascript arrays that I display to user in a html table on the webpage. I want to give an option to the user to save the data in excel. I thought of a solution that involves: 1. Create an http request and post the data as json 2. On server using jsp convert the json data to html table 3. Set the response headers to open the response in excel This solution works, but does not look optimal. Why to send a http request to server when all the data is there on client side. I tried creating a new document on the client side and open that in a new window. That does not open the document in excel as the response header is not set. Any suggestions on how to achieve this. I want to avoid http request to server. Thanks, Pawinder |
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