javascript framework - Page 283

How to distinguish between blank areas and non-blank areas in a webpage with JavaScript?

- by Ethan

How to distinguish between blank areas and non-blank areas in a webpage with JavaScript? Blank areas including: areas that are not occupied by DOM elements. margins, borders and paddings of DOM elements.

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How do I add a new key:value pair in existing JavaScript object?

- by basit74

I have a JavaScript object like: appointerment= {ids: '15,16,17', appointments: {'15': '12.05.2010,14,05,2010'} } now in appointments object I want to add something like '16': '21.05.2010' what is the best possible way to do this?

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How can I get the value from a parent html page into a javascript popup page?

- by Jim

I have a php page where a date value is POSTed back to. From this php script, I want to forward that value to a javascript window. Can this be done?

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Is there a way to stop all javascript on the page?

- by M28

I need to stop all the javascript running on the page, but I have a limitation: I cannot control the tags content, I am editing the page after it's being loaded. Also, I need to remove all the variables defined by the old script that was running and stop all the intervals.

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JavaScript: How do I create an Array into another Array?

- by Timnkd

I have the following JavaScript Array: var jsonArray = { 'homes' : [ { "home_id":"203", "price":"925", "sqft":"1100", "num_of_beds":"2", "num_of_baths":"2.0", }, { "home_id":"59", "price":"1425", "sqft":"1900", "num_of_beds":"4", "num_of_baths":"2.5", }, // ... (more homes) ... ]} I want to convert this in an Array like such (pseudo code): var newArray = new Array(); newArray.push(home_id's); How can I do that? Notice how the newArray only has home_ids from the big jsonArray array.

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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?

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How to use Javascript to popup a new window with NEARLY the same html as its parent window

- by Ethan

I want to create multiple versions of print-friendly pages from a single page. I am considering to do it in this way: placing several buttons on the original page and, clicking one button will popup a new window with the same html as its parent window, but with some modifications (e.g., set display attribute of some DIV's to none). It is possible to use javascript to do this?

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What are the standard practices for throwing Javascript Exceptions?

- by T.R.

w3schools says that exceptions can be strings, integers, booleans, or objects, but the example given doesn't strike me as good practice, since exception type checking is done through string comparison. Is this the preferred method of exception handling in Javascript? Are there built-in exception types (like NullPointerException)? (if so, what are they, what kind of inheritance do they use, and are they preferred over other options?)

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How do I extract a background= value from a string containing HTML in JavaScript?

- by bbeckford

I have a string containing HTML loaded from another page, how do I extract the background property from it's body tag using Javascript? The body tag in the string looks like this: <body onload='init();' background='storage/images/jsb_background.jpg' link='#000000' vlink='#000000' alink='#000000' leftmargin='0' topmargin='0' marginwidth='0' marginheight='0'> Thanks!

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When it's ok to use Javascript and when not?

- by metal-gear-solid

for good accessibility. When it's OK to use JavaScript and when not in web design and development ? IN what scenarios and conditions.

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Is it possible to use javascript to change the meta-tags of the page?

- by alex

if I put a div in the head and display:none, than use javascript to display it, will this work? Edit: I have stuff loaded in ajax. And as my ajax changes the "main" portion of the site, I want to change the meta-tags as well.

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Any way to specify the base of math.log() in javascript?

- by Ryan

I need a log function in my javascript but it needs to be base 10, I can't see any listing for this so I'm assuming it's not possible... any math wizards out there know of an approach for this? Or maybe I'm missing something and there is a way?

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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? thanks

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single page javascript send data AND pull data from mysql via php?

- by David19801

Hi, I am trying to make a dynamic form which retrives data. How can I use javascript to load a value from a mysql database? I understand that it must use php in some way, and I know how to query the database and assign the value to a php variable, but I have no idea what to do after that...any advice? the goal is to have someone enter their orderid say, then the datbase auto pulls down and enters their last invoice in the field below it after they click GO...

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In Javascript, when is a new scope created? (with a new function and in a "with" statement) Are the

- by Jian Lin

In Javascript, when is a new scope created? The 2 situations I know of are: with a new function in a "with" statement as a note, any new block (in if-then-else, loops, or just beginning a block for no other reason) won't create a new scope. Is there a third situation where a new scope is created besides the two situations above? Thanks.

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How can I start a flash video from javascript?

- by Geo

Is it possible to start playing a file inside a flash player by making use of javascript code? If so, how would I do it?

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Is it posible to navigate swf file using javascript/jquery?

- by ngkong

When we open plain swf in browser, we are able to control the swf file by right clicking, the available control are: zoom in, zoom out, quality, rewind (previous frame), forward (next frame), and print. Is it possible to trigger those control using javascript especially jquery? Thanks.

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Javascript - Get callback info back to original calling function.

- by Steve

Let's say you have a Javascript function that calls a web service method. So that webservice completes and calls a callback function, which has the result. How do I get that result back into the original function that called the web service method? Essentially, I'm trying to "synchronize" an asynchronous call.

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How to get a webpage as plain text without any html using javascript?

- by Amr ElGarhy

i am trying to find a way using javascript or jquery to write a function which remove all the html tags from a page and just give me the plain text of this page. How this can be done? any ideas?

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I ran out of available quote symbols in javascript!

- by Chaotic_one

I can't believe it, but this is really happening. I ran out of available quote symbols using jquery and javascript native functions together. Can somebody help? Maybe there is yet another symbol? var t=setTimeout('$("#popupChange").html('<img src="http://servername/pdf/picture/genericThrobber.gif" />');',2000);

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JavaScript Replace - u0009 .... with .replace(/\u0009/g,'');

- by nobosh

I'd like to use Javascript to replace all instances of \u009 in a string This doesn't seem to be working: .replace(/\u0009/g,''); Do I need to escape something?

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How do you get the pageYOffset of from the bottom of the window and not the top ( Javascript )?

- by user782860

I need to get the pageYOffset of the bottom of the viewable area, whether the user is zoomed in on the webpage or not, on Mobile Safari ( iPhone ). However pageYOffset returns the offset from the upper left corner of the window. Spec: "pageYOffset properties returns the pixels the current document has been scrolled from the upper left corner of the window" How do you get the page y offset from the bottom of the viewable area, (zoomed in or not) on the iPhone via Javascript?

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How to access parent iframe elements from a child javascript page?

- by samir

I have 2 pages-- Parent n child. In the parent page i have an iframe whose value i want to ftech in the javascript of child page. Is there any way?....Please suggest.

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How do you access @font-face in the DOM (via Javascript)?

- by Jon Raasch

Hi I'm looking to access @font-face with Javascript. I assume it's somewhere in the DOM but where? I want to do this for @font-face feature detection. Thanks!

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Can a PDF file's print dialog be opened with Javascript?

- by user83358

I know how to open a webpage in a new window and add javascript so the print dialog pops up. Is there a way to do a similar thing with a PDF file?

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