What's the reason behind to include a engine in Java to run JavaScript?
- by developer.cyrus
To let JavaScript able to run in server-side?
If it's justified, what's the advantage? and any good application for such use?
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Hoe to convert a JSON array of paths to images stored on a server into a javaScript array to display them? Using AJAX
- by MichaelF
I need for html file/ ajax code to take the JSON message and store the PATHS as a javaScript array. Then my buildImage function can display the first image in the array. I'm new to AJAX and believe my misunderstanding lies within the converting of the JSON to Javascript. I'm confused also about if my code creates a JSON array or object or either. I might need also to download a library to my app to understand JSON? Below is a PHP file loading the paths of the images. I believe json ecode is converting the PHP Array in a Json message. <?php include("mysqlconnect.php"); $select_query = "SELECT `ImagesPath` FROM `offerstbl` ORDER by `ImagesId` DESC"; $sql = mysql_query($select_query) or die(mysql_error()); $data = array(); while($row = mysql_fetch_array($sql,MYSQL_BOTH)){ $data[] = $row['ImagesPath']; } echo $images = json_encode($data); ?> Below is the script in is going to be loaded on an Cordova app. <!DOCTYPE html> <html> <head> <link rel="stylesheet" href="css/styles.css"> <link rel="stylesheet" href="css/cascading.css"> <script> function importJson(str) { // console.log(typeof xmlhttp.responseText); if (str=="") { document.getElementById("content").innerHTML=""; return; } if (window.XMLHttpRequest) { // code for IE7+, Firefox, Chrome, Opera, Safari xmlhttp=new XMLHttpRequest(); } else { // code for IE6, IE5 xmlhttp=new ActiveXObject("Microsoft.XMLHTTP"); } xmlhttp.onreadystatechange=function() { if (xmlhttp.readyState==4) { //var images = JSON.parse(xmlhttp.responseText); document.getElementById("content").innerHTML=xmlhttp.responseText; } } xmlhttp.open("GET","http://server/content.php"); xmlhttp.send(); } function buildImage(src) { var img = document.createElement('img') img.src = src alert("1"); document.getElementById('content').appendChild(img); } for (var i = 0; i < images.length; i++) { buildImage(images[i]); } </script> </head> <body onload= "importJson();"> <div class="contents" id="content" ></div> <img src="img/logo.png" height="10px" width="10px" onload= "buildImage();"> </body>Read the article
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Can JavaScript load raw bytes to use in HTML 5 Canvas?
- by whiskeyspider
Say I had a file like... http://my.website.com/myfile.raw and this file was just raw bytes, representing an intensity image. Is it possible to grab this data and read the bytes in JavaScript? And then using it with HTML 5 canvas (e.g., putImageData) to draw an image? Or is there some other way to do this in the browser without Java or Flash?Read the article
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how do i base64 encode and decode using javascript?
- by Mo
Hi just wondering if there are any methods in JavaScript that i can use to encode and decode a string using base64 encoding? thank youRead the article
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How to pass parameters in when call code-behind function in javascript?
- by KentZhou
Suppose I have a function in code behind like: Public Function Calc(ByVal ID As Integer) As Boolean '...... End Function I can call this function in javascript like var isSuccess ='<%=Calc()%>'; but how to pass the parameter in for this case? Following code not working: var ID = 1; var isSuccess ='<%=Calc(ID)%>';Read the article
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How do I make a "input type text" go invisible with JavaScript?
- by Anonymous the Great
<input type="text" value="Text box"/> <input type="button" onclick="toggle();"/> How do I make the text box disappear and reappear with JavaScript?Read the article
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How to automatically uncheck a checkbox if another checkbox is checked through javascript?
- by Sandipan
I have a checkbox Birthdate which shows the mm/dd only.And below it there is another checkbox called ShowYear which shows the year and this checkbox is only visible if the Bithdate checkbox is checked. Now I want to uncheck the ShowYear checkbox automatically if the Birthdate checkbox is unchecked through javascript.Read the article
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How do you access the main obj from obj.foo.bar in javascript?
- by bschaeffer
Objects in javascript throw me for a loop! In this set up... var obj = { someVar: "my awesome variable", foo: { bar: function(){ alert(this.someVar); } } }; How would I get obj.foo.bar to correctly alert the value of someVar?Read the article
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Detect when a new property is added to a Javascript object?
- by UICodes
A simple example using a built-in javascript object: navigator.my_new_property = "some value"; //can we detect that this new property was added? I don't want to constantly poll the object to check for new properties. Is there some type of higher level setter for objects instead of explicitly stating the property to monitor? Again, I don't want to detect if the property value changed, but rather when a new property is added. Ideas? thanksRead the article
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Javascript writing to file system,how is this kinda stuff approached?
- by user198729
http://www.tiddlywiki.com/ The above site provide a wiki tool which essentially is just a .html file,but it can save files via javascript,anyone knows how is it implemented?Read the article
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How to pass a parameter to a javascript through a url and display it on a page ?
- by Frank
For instance, I have a url like this : www.mysite.com/my_app.html How do I pass a value " Use_Id = abc " to it and use javascript to display on that page ?Read the article
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How do I transfer a javascript value to a php variable?
- by motboys
I have an html table containing values that are being generated from javascript. How do I transfer those values to php variables?Read the article
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Ruby equivalent to JavaScript’s encodeURIComponent that produces identical output?
- by Mo
Hi is there an equivalent ruby method to JavaScript encodeURIComponent method? i am using the URI.unescape(str) but it recognizes the "£" (after encodeURIComponent it becomes "%C2%A3") as a "?" sign. any solution's? thanksRead the article
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Javascript array best practice to use [] instead of new array?
- by AlfaTeK
I read at many tutorials that the current best practices to create a new javascript array is to use "var arr = []" instead of "var arr = new Array()". What's the reasoning behind that?Read the article
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How do I make a word bold in javascript?
- by user54197
I am using javascript to populate data in a table which return everything fine. I would like to make a string bold. See code below $tr.find('.data').val($('#txtName').val() + ' <strong>Address:<\/strong> ' + $('#txtAddress').val()); How do I make only the word "Address" bold?Read the article
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How to know without having iphone and ipad, any javascript/jquery effect/plugin will work on those?
- by metal-gear-solid
How to know without having iphone and ipad, any javascript/jquery effect/plugin which is working fine on all desktop browsers, will work on iphone and ipad also? Is it enough to check on Latest Safari for Windows? I don't have MAC OSX .My os is Windows.Read the article
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Is there a Javascript cron implementation somewhere that I'm missing?
- by user173491
I'm aware of timing issues in Javascript, how its not exact/off by milliseconds etc, but I need something to at least attempt to do browser-based scheduling. In terms of features, I'm thinking something along the lines of scheduling patterns described here: http://www.sauronsoftware.it/projects/cron4j/manual.php#p02 Anything out there? I've done google searches and haven't found any implementation worth nothing.Read the article
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Dynamic Object Initialization In JavaScript (just like PHP Reflection allows)?
- by Gcoop
Hi All, Using Reflection in PHP I can dynamically create a object like so $target = 'core_domain_Person'; $reflect = new ReflectionClass($target); $obj = $reflect->newInstance(); I would like to replicate this same concept in JavaScript is there a way to do this out of the box? Or is there a way to replicate what Reflection is doing?Read the article
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How do I do a Date comparison in Javascript?
- by Lulu Ket
I would like to compare two dates in javascript. I have been doing some research, but all I can find is how to return the current date. I want to compare 2 separate dates, not related to today. How do I do that. var startDate = Date(document.form1.Textbox2);Read the article
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JavaScript - Is it possible to get height from div in separate div?
- by Kenny Bones
Hi, I'm wondering, is it possible to collect the height of a specific div container from a separate page with JavaScript? I'm using jQuery btw and I'm in need of comparing heights of div containers.Read the article
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How to get the domain value for a cookie in Javascript?
- by Wabbitseason
Using Javascript I'd like to get the domain value for a specific cookie. Is this possible? If so, how? To clarify: I'm not looking for the value of the cookie. I'm on "subdomain.domain.com" and I need to remove a cookie whose name is known but its domain value is something like ".domain.com". In short: I'd like to get the value of ".domain.com".Read the article
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How to turn a string into a date in Javascript.
- by Kyle
How could I turn this string Sun Apr 25, 2010 3:30pm Into a valid Date in JavaScript (Minimal code is what I'm aiming for here)?Read the article
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Detect if parameter passed is an array? Javascript.
- by Alex
Hello all, I have a simple question: How do I detect if a parameter passed to my javascript function is an array? I don't believe that I can test: if (typeof paramThatCouldBeArray == 'array') So is it possible? How would I do it? Thanks in advance.Read the article
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How can I use client-side JavaScript to restrict the size of file uploads?
- by cometta
Is there a JavaScript library that can be used to check the size of a file before allowing it to be uploaded to a Java servlet?Read the article
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Is possible to initialize an object in javascript in this way?
- by Kucebe
I'd like to initialize an object in javascript calling directly a method that belongs to it: var obj = (function(){ return{ init: function(){ console.log("initialized!"); }, uninit: function(x){ console.log("uninitialized!"); } }; }).init(); //later obj.uninit(); obj.init(); This specific example doesn't work, is there something similar?Read the article
