Defining File Input Value With JS?

Oct 15, 2007

<input type="file" />

For the above input, is there any way I can change the value? I found that adding: value="asdf" doesn't change anything with a type="file" input.

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Difference Between Defining Variable With 'var' Before Versus Defining Without It?

Nov 26, 2010

What's the difference between defining a variable with 'var' before, versus defining without it?[code]

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Cannot Move Input Focus To A Cell After Re-Defining The Cell

Sep 15, 2011

I have a javascript program that uses a HTML table as an Excel-like grid. The user can use arrow keys to navigation the grid. When the user selects a cell and then hits <Enter> key, the program turns the cell from read-only to editable (an input box), and select all the text in the input box. When the user hits <Esc>, the program cancels the changes that the user has made and turns the cell back to read-only. So far so good. The problem is that as soon as the user hits <Esc> key and turns the cell back to read-only, I find that I cannot move the input focus back to the cell any more. Actually I cannot move the input focus back to _any_ cell in the table. When this happens, the user cannot use arrow keys to navigate the grid any more (like the grid has lost the input focus). The user needs to use the mouse to click at a cell in the table to get things working again.

The user can get around with this problem by un-selecting the text from the input-box before hitting <Esc>. But this is not something that I expect the user to remember to do. I need a way to fix this problem. I tried the logical thing and programmatically un-select the text before turning the cell back to read-only. But this actually made thing worse - this causes the workaround to stop working.

The only browsers that I have tested this program is IE6 and IE8. I have not tested this in any other browser.

Attached is a simplified version of the program that can show this problem in action. This simplified program first adds an empty table on the web page, and then creates an instance of the CEstGrid class that takes care of the grid. CEstGrid will add two rows of test data into the table with two columns in each row. The user should use a mouse to click at one of the cell, and the cell should be highlighted. The user uses arrow keys to navigate the table. When he reaches the end of the table, he will wrap around to the other side of the table. Let say the user reaches the cell in row-1 column-2, he hits <Enter> to change the cell to editable. He will find the text in that cell to be highlighted. When he hits <Esc> at this moment, he will find that he cannot use the arrow keys to navigate the table any more, and this is the problem. Please rename the test program from .TXT to .HTML to test it.

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Search The Index.xml File Throu Diff Input Like Combo Box And Input Text Shown In The Search.html File?

Jan 24, 2011

i want to search the index.xml file throu diff input like combo box and input text shown in the search.html file and output the result in a tale.

search.html
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<html><head><meta content="text/html; charset=ISO-8859-1" http-equiv="content-type">
<title>Search</title>
<script type="text/javascript" src="search%20xml/search%20xml%20with%20mouseover%20table/searchindex.js"></script>

[Code]...

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Show File Content When File Is Selected Using Input Type File

Sep 21, 2007

I have a <input type = file> button for uploading a file in my php page. As soon as i select a file from the button, i need the file data to be displayed so that i check whether the file selected has the correct data. How can i do this.

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JQuery :: Check File Extension When User Sets It In The File Input?

Apr 20, 2010

is there a way to assign an event to a file input so that when a user selects a file to upload the event is triggered and i can check out the file extension? The reason why is simple, i want to perform different actions depending on the type of the file.

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JQuery :: Send A Input File From A HTML Form To A PHP File Using The Load?

Mar 20, 2010

I wanna send a file thru the JQuery.load, I want it to work exactly like the regular post without the JQuery. So I can check the $_FILES['file']['error'] in PHP and all its features like I do without using JQuery.

$("#load").load('gerenciar_itens.php',{/* This is where I wanna pass the file. */}, function(data){
alert(data);
});

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How To Check The Input File Object File Size On Client Side?

Dec 20, 2004

I have a form with three Input File form objects in which the user can add image files. But I am worried about the problems these controls can lead, because to check the file size the server needs to receive the entire file, so serious problems may happen, for example:

1. Malicious user trying to collapse the website sending big files.

2. Users that have not seen the warning “Maximum size: 100 KB&#65533; for each image, and try to send three image files consisting in 1,5 MB each one. These users will have a bad experience waiting one hour or more to upload the images, and after that receive an alert saying “Oooops! Your image files are too big.&#65533; And also, web server will waste an important amount of resources. The same case with 100 users at the same time can be a nightmare!


I have been searching a way to check the file size on client side without having to force user to install anything, but I think that there isn’ t nothing to do with javascript. But I found an interesting PHP article that explains a way to do it with this server side language. The technique consists in:

“A hidden field (measured in bytes) that precede the file input field, and its value is the maximum filesize accepted. This is an advisory to the browser, PHP also checks it. This form element should always be used as it saves users the trouble of waiting for a big file being transferred only to find that it was too big and the transfer failed. Code:

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JQuery :: Finding Out Size Of A File In Input Type=file In IE?

Nov 29, 2011

I've got a major headache with IE in that I have a support form that allows users to submit tickets with files which is then emailed off.

Using javascript, jQuery and PHP I have everything under control with all of our favourite browsers - but then comes along IE.

support.php
...
<!-- file -->
<div class="fileUploadEntry">

[code]....

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JQuery :: Get File Specific Parts From Input File Type?

Oct 22, 2009

I need to get the filename, basename, dirname using jQuery. if there is any utility that will take care of windows/mac/linux file paths.

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JQuery :: Pass ('input:file') To Another Php File Without Refresh?

Aug 15, 2011

I have a form with 3 text inputs; onclick I pass their values to another php file to process everything in that file without a refresh, it works fine, but in the same form I also have a input and I need to pass its value to that other file as well, does anybody know how to do it? This is what I have:

function processform(){
$.post('processnewpostForm.php',
{title: newpostform.titleInput.value,

[code]....

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Input='FILE' - Can Detect If The File Browser Is Canceled

Dec 21, 2010

If a form as an input='file' element, and someone clicks on BROWSE and then changes their mind and clicks CANCEL, if JavaScript can detect that cancel?

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Input File-multi File, Directory

Jul 23, 2005

For the <input type="file">, can I select directory? Multiple directories?

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Get Full File Pathname In Google Chrome Using Input Type "file"?

Dec 2, 2011

Am developing a form in which user image should be viewed and stored in web database. I am using html5 and javascript. While using input type= "file" to browse the image, chrome shows the file path as c:/fakepath/*.jpg.

How can I get the full path name in google chrome to display image and to store it in web database.

If you have some other options to display and store the image in web database using javascript and html5

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Custom File Upload - Input "file" Type Can't Be Customized Very Well Using Css?

Aug 31, 2009

I know that the input "file" type can't be customized very well using css, so I figured I might try to make my own with javascript. The only problem is, I don't know too much about javascript. point me in the right direction on how to make my own custom file upload box in javascript that works the same way as the default one works (so I don't have to edit my PHP coding). Also, heres something I'd like to achieve: [URL]

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Defining New Opener

Dec 21, 2002

I have just created an 'open window' function for an animated page. It opens the current animation from the current page into a new window, and lets the user change the 'opener' animation while the new animation in the new window continues, sychronised with the opener.

As the opener contains the clock for sychronisation, I can only use the animations from that page (and I have a few pages of small animations). I can let the new animation on the new page continue with its own clock if the opener is closed, but what I would like is if a new animation is started from a new opener, then it tells the existing opened window the new page speed...

got it?????
trymy rhythm pages
follow steps.....
1; open new window
2; click on drum in new window to turn on
3; start rhythm by clicking on hands in main window

I can change between rhythms, so long as I stay on the main page. The problem is when I change the main page to go to other rhythms I loose the sychronisation.

I can go to another page(from opener) and put a new rhythm in the current new window, but I would prefer to keep the old rhythm and sychronise.

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How To Restrict User From Input In <input Type="file">

Apr 17, 2006

I want to restrict the user from being entering the value in <input type="file">. It works fine in IE but not in Mozilla. I am sending my code also which works in IE and not in Mozilla...

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Defining Pictures In An Array

Jun 15, 2006

I wish to access several pictures on my page by defining them as an array. This way I can either loop through them or access them by array index.

What I am really doing is writing my own picture gallery and slide show. The reason I am doing this is so that I can have my web page look exactly the way I want. In addition, it is an excellent way to learn Javascript.

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Defining String That Contains A Link

Jan 24, 2011

I have the following code that works in FF but no IE:[code]This is a variable that is used in a js slideshow. The text doesn't change with the image in IE.

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Defining A Property With The DontEnum Attribute

Nov 23, 2005

I'm trying to solve a problem for which I think the solution will be
to *cheat*; but I don't mind doing so for this case. The background is:

Given an object constructor, and an instance

SampleObj = function() {
this.prop = 1;
}
obj = new SampleObj();.....

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Function Defining Index Of Array?

Mar 24, 2010

Code: function initArray() {
this.length = initArray.arguments.length;
for (var i = 0; i < this.length; i++) {[code].....

For the above piece of code, does the function 'function initArray()' just predefine the array that is written right after so that it's first array index starts at 1 instead of 0?

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Defining Preload Var For Composite Images

Nov 13, 2006

I have built a function that allows users to select a color tile and trim option for a cooking range. Here is a code snippet showing the function:

var color, trim, description;
function displayRange(selectColor, selectTrim, showDes)
{
var rangeName;
if (selectColor != '')
color = selectColor;
if (selectTrim != '')
trim = selectTrim;
rangeName = "images/cluny1400" + color;
if (trim == 'chrome')
rangeName += "_chrome";
rangeName += ".jpg";

var rangeDescription;
if (showDes != '')
description = showDes;
rangeDescription = description;
document.getElementById('rangePict').src = rangeName;
document.getElementById('rangeDes').innerHTML = rangeDescription;
}

Based on the users selections the range image in the selected color and trim is loaded into the interface. My problem is this:

The selected image is made up of three elements, based on the users selection, color and trim and the .jpg extension. This function works well.

However, I cannot work out how to use the image object to preload the images (of which there will be over 34). Normally you would assing a var to hold a new instance of the image object and then assign the src property to the image url. But how do I do that when the var rangeName is composed of three elements. I cannot use a simple var and then call that var in the function.

I have this code snippet, that illustrates my problem:

// create function to preload images
// eliminate older browsers by checking for image object support
function preload() {
if (document.images) {
cluny1400au = new Image(478, 314);
cluny1400au.src = "images/cluny1400au_fw.jpg";
cluny1400au_fw_chrome = new Image(478, 314);
cluny1400au_fw_chrome.src = "images/cluny1400au_fw_chrome.jpg";
}
}

The vars cluny1400au and cluny1400au_fw_chrome would be fine if I could use them in the function to call the images, but I don't think this will work as I believe that you have to use the same var name in the function as in the image object.

Can anyone tell me how the cluny1400au = new Image(478, 314); and cluny1400au_fw_chrome.src = "images/cluny1400au_fw_chrome.jpg"; should be constructed to work with the function.

Here is an html snippet from the page to aid clarity:

<body onLoad="preload()">
<div id="wrapper">
<p><img src="images/cluny1400_bw_chrome.jpg" name="rangePict" width="478" height="314" id="rangePict" /></p>
<p id="rangeDes" name="rangeDes">Description</p>

Thank you in advance for any help.

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Defining Array Elements With Keys

Mar 13, 2010

I would like to have an array and define which element goes to what key. Something like this:
Code:
var test = [][];
test[0][0] = "foo";
test[0][1] = "bar";

However I am wondering if its possible to write it in one statement? Something like this:
Code:
var test[0] = [
[0] => "foo",
[1] => "bar"
];
The code up doesn't work of course.

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How To Avoid The Execution Of A Function At The Time Of Defining.

Mar 18, 2007

How to avoid the execution of a function at the time of defining.

Here i am giving the details.

I am creating the following div container through DOM.

<div id="content">
<a href="#" onclick="displayDiv('content')" Click</a>
</div>

The Code is:

var category_list = document.getElementById('category_list');
var dom_div = document.createElement('div');
dom_div.id = 'content'
var dom_link = document.createElement('a');
dom_link.href ='#'
dom_link.onclick = displayDiv();
val = document.createTextNode('Click');
dom_link.appendChild(val);
dom_div.appendChild(dom_link);
category_list.appendChild(dom_div);


The displayDiv Funcion


function displayDiv()
{
dv = document.getElementById('content'); //Here is the error.
}



The Problem is when the following script:

dom_link.onclick = displayDiv('content');
is executed it is calling the function displayDiv(name)
Here we have the code
document.getElementById('content');
which throws the error.

The reason is the div container is not yet created.

What I need is the function should be called only on the click event. It should not be called while I define it to the Click Event. (ie it should not be called at the time of defining)
How to achieve this.

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JQuery :: Defining Dynamic Selector With Variable?

May 20, 2010

How can I dynamically specify a class value to use in a selector? For instance, I have a number, and I need to identify an element that ends with that number. In this case, there are four divs that have class values of

my_id_0
my_id_1
my_id_2
my_id_3

I have a 0 (obtained previously in the code) stored in the value tabId, so I want to get the values of the class attribute for <div id="my_id_0">. How do I create my selector? I tried

$("div# parent_element_id #my_id_" + tabId).attr("class");

but it comes back as undefined. Do I need to define it as a variable and put it in theelector that way? Or is there another way?

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JQuery :: Defining Selector As Global Variable?

Jun 3, 2011

I'm trying to define a selector as a global variable and it keeps coming back undefined. I tried creating a namespace for it but had no luck. I would like to be able to reference the sliderRange, currentMin, currentMax globally.

SLIDER.range = $('#price-slider').slider('option','values');
SLIDER.min = SLIDER.range[0];
SLIDER.max = SLIDER.range[1];

[code]....

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