Global Variable Inside A Document.getelementbyid.innerhtml?
Feb 5, 2010
I have a little JS app that is a glorified calculator which I posted the code for below. My code uses the document object to replace the html in the "content" <div> and works great.However, I want to add an inline style in order to change the background of the input (readonly field with an id of "coutput") based on either of the global variables named "MJPD" or "IJPD", (depending on the switch case selected in the user prompt at the beginning of the script.)Simplified....if the value of MJPD is less than 4.6, I want the "coutput" field's background to be red, else be green.The same goes for IJPD, except the threshold for red will be <3.83.Code and what I have tried is below.
<script language="JavaScript">
var MJPD = 1;
var IJPD = 1;
I have an an element that can successfully be retrieved by document.getElementById('id'),but when I attempt to alert(document.getElementById('id').innerHTML), the string is empty. Then, if I try to change the innerHTML like this:
document.getElementById('id').innerHTML += "new string", I get "unknown runtime error".The thing that bothers me is that the element can be gotten with getElementById, but its property innerHTML seems to be either blank or null when in fact, it contains HTML. By the way, this is all in IE. I have tested in FIrefox, Chrome, Safari, Opera, and it works perfectly in those.
im trying to change a variable set outside of a function and calling the function with an onchange... i'm having problems getting the variable to change
I am writing some javascript that when the user clicks on a link, it hides or displays content inside a div tag. I have been trying to add some code that would only allow for one div tag to be displayed at a time.
Here is where I originally got the code [url]
Whenever I run this code I get this error:
This is the JavaScript that runs when the user clicks the link:
Well, it turns out IE8 has yet another problem. My code has a global variable (to the object) inside an object declaration that cannot be accessed by a function (that is also global).
The code is like so: Code: function myobject(params){ //public this.initialize = function(){...} //private some variables... //problem variable var mouse = new Object() mouse.x = 0; mouse.y = 0;
//this function is in an interval function moveslides() { /* this is where I have the problem
It seems that the function doesn't recognize that mouse.x, or mouse for that matter, exists. Mouse is global to the object, so why can't this function access it? */if(mouse.x) { code... }}} The page is at [URL] and works on every browser, including finnicky opera, except for ie. The full code is availabe when you right click and view the source on the page.
I want to restrict getElementById to search children of a specific element instead of searching the entire document, in the same way that I can do getElementsByTagName using a specific element as the parent.
In this particular instance the parent is a table and the elements I'm interested in are all TDs, so I did the basic getElementsByTagName('TD') off the table and looped through this array checking the IDs. However, I'm suspecting that the browser can do getElementById faster than I can do a loop in javascript. Is there a neater way to do this? For now, I'll settle for IE-only solutions, though it would be nice to have things work in generic browsers.
I have a table with td consisting of lists with <select></select>. When I do a document.getElementById("element").innerHTML I don't see the selected item. IOW, the innerHTML is not dynamic. Is there some way to get the most recent selected without traversing through the list's options.
I am trying to have the user input data into a box on a form and when they press an "Add" button, what they typed in the input field should appear in a box below. I can get it to to work....slightly. What they typed pops up where it should be, but then it disappears. Here is the javascript code and the form code:
Here's the problem: I have several hidden divs containing information. When you click on a link, javascript executes which is supposed to move the appropriate info from one of the hidden divs into the visible 'body' div. The javascript isn't working, though, and I'm getting 'undefined' instead
I am simply trying to use a global variable in javascript, but can only access the variable on the second call. I can't find anything that relates to this through my searches. My application is supposed to query the server for XML that tells me which years and months are available to put into combo boxes. I want to store this xml in a global variable to access it later.
I am having a problem accessing and element by ID in a script that runs via 'window.onload' at the end of all my script definitions. Do the HTML elements exist at that point or should I look somewhere else for a bug?
Normally an SVG document is loaded/parsed/interpreted inside an HTML document using an 'object' (or 'embed') element, although there are supposedly other ways too. The problem is, the SVG document must be static this way.
I want to use the DOM interface to build SVG dynamically inside an HTML document. I am guessing I can build it inside HTML within an 'object' (or maybe 'iframe'?) element.
My intentions/goals:
In Javascript, I construct an object 'embedSVG' which has properties and methods for creating valid SVG elements and setting their attributes and attribute values.
During construction, the SVG document is created with its root element. During debugging in FF 2.0 (I'll work on an MSIE-compatible format later), I am using the Mozilla DOM Inspector and comparing nodes when the 'object' element is loading a valid external SVG document, and when I am appending the child representing the SVG document created by the DOM functions.
However the child node (#document) does not specify 'svg' as the root element, but instead 'HTML'. Something is not working.
Here is the relevant code in 'ScriptTest.html' which is the HTML in which the SVG is supposed to be embedded. Below it is the relevant code for 'svglib.js' which is supposed to contain code for building the SVG dynamically.
What this code is supposed to do is load the HTML page and execute the anonymous script, and draw a navy blue-bordered yellow rectangle on a blank page. This is similar to the example in the SVG 1.1 W3C Recommendation on page 202 of the 719-page PDF.
I am getting an exception when embedSVG object placeInHTML() method is called: NS_ERROR_DOM_HIERARCHY_REQUEST_ERR. I find in DOM Inspector in spite of or after the exception that a document is placed as a child of the object element, but it is HTML, with a default 'head', 'title', 'body' elements placed.
If I have a global variable in one <SCRIPT>...</script>, is it available in the 2nd <SCRIPT>...</script>. I do not know if "global" means the whole document or the whole <SCRIPT>...</script> only.
Basically i'm trying to draw a box over an image which is turning out to be a nightmare. The problem i'm getting at the moment is that i'm creating a line with <div which works when it's not hidden but I need to be able to make it hidden so I can use layers to show all when it finished drawing to make it smoother. This is how some other scripts are doing it that i've seen. So i've got it drawing a line and I need getElementById to pick out the layer but it's only picking out NULL with the one i've got enabled below. I've tried the others but they just come out as errors. I need to get top2 which is the <div line to show itself but I can't seem to reference it by getElementById. I use linux mozilla so i need it working in mozilla as well as windows that's why i'm using getElementById. My code is below any ideas anyone?
I'm trying to do is change the backgroundColor of my input text with js..
This the js part
Code:
And this is the html part
Code:
Basicly what the script do is to check the hidden field cf with value of '0' if found it will execute changeCssProp(thefield)..but the problem is js return error of document.getElementById(thefield) is null
