I have a schedule web page that is a glorified big table. This table is broken by days of the week, and into 1 hour incraments. This schedule is based on Eastern Standard time. To make this schedule easier to read for people of various time zones, I wish to highlight the day of the week heading and the hour of the day. To do this, I am going to write a perl program that is linked to off the navigation, which will acquire the server time and date and then generate the schedule html with javascript inserted into it which has a variable set by the perl program with the server date and time.
My question deals with the javascript. I beleive I need to use the String.fontcolor method so that I can change the color of the heading text to be different then all the rest of the table. But, do I define this javascript variable in the head section of the html with the string.fontcolor in the table accessing that varible? This is where I am definatly in serious gray area as to how I would define or do this. I don't think the javascript I would have to drive would be great, a if statement in the day headings. Day equal, change the font color. Else, default font color. Time of day equal(hour).
Now I need to do some string replace in chatmsg.value, ie, I need to look for some piece of text in chatmsg.value, and in case they are present (there may be multiple occurences of the same), to replace them with something else. This is what I got by doing a google search: Code:
function replaceAll( str, from, to ) { var idx = str.indexOf( from );
while ( idx > -1 ) { str = str.replace( from, to ); idx = str.indexOf( from ); } return str;}
chatmsg.value = replaceAll( chatmsg.value, "string to replace", "new string" ); And I place this second function just above the previous one. But it's not working. Any help friends?
So my question is, if the above behaviors are the same?? If string is a number, and compare with another number, it will be the same behavior as compare 2 numbers?
In this case, it is comparing 2 strings that are numbers, so they are string comparisons here. correct?
if ("123" > "33") will return true
In this case, "33a" is not a number, that's why when it compare with another number, it always return false. correct?
<script type="text/javascript"> function HTMLEncode( text ) { text = text.replace(/&/g, "&") ; text = text.replace(/"/g, """) ; text = text.replace(/</g, "<") ; text = text.replace(/>/g, ">") ; text = text.replace(/'/g, "'") ; return text ; } </script>
Now i want to store the content of 'text' in a php string. Is that possible?
Does anyone have a reputable reference about internal string storage in JavaScript? (for some particular implementation I mean).
Say having 1,048,576 characters long string from the geometric progression:
function generateLargeString() { var s = 'a' for (var i=1; i<21; ++i) { s = s.concat(s); } return s; }
- the internal size should be 2 mebibytes and not 1 (?) if strings are indeed stored as Unicode 16-bit. From the other hand it would be tempting for an engine developer do not spend extra bytes on ASCII chars...
So does anyone know of any documented engine optimizations on the matter? Would be expected on some engine to have the string from above twice smaller than say
function generateLargeString() { // 1200 ETHIOPIC SYLLABLE HA var s = String.fromCharCode(0x1200); for (var i=1; i<21; ++i) { s = s.concat(s); } return s; }
i'm trying to create some javascript string variables using php. i'm running into a problem because some of the variables span multiple lines and this is causing a problem. here is a sample of what i'm trying to do:
var thetext1=new Array() thetext1[0]="info for #1 goes here" thetext1[1]="info for #2 goes here" thetext1[2]="info for #3 goes here"
etc.... the array values are output from a mysql db using php and used for a script i have on my page.
the problem is some of my strings span multiple lines and end up making it look like:
thetext1[36]= "this is an example of how some stuff spans multiple lines"
Using the javascript console in firefox i see the problem is: "Error: unterminated string literal." I believe it is because the string I am trying to input is spanning multiple lines. any idea on how to fix this?
i'm using php/mysql to create these javascript variables so i have access to their functions. i tried doing this: str_replace( " ", '', $row['text']); to replace the newlines with nothing but they're still there.
I'm trying to perform a very simple validation of user input. I want to verify that the user entered a six-digit string consisting entirely of numbers. So anything from 000000 to 999999 is considered valid. The problem that I'm having is getting the validation to work on the entire string. In other words, 000000 is okay but 000000000000 is also returning as a match. Here's a quick code block...I have something along these lines....
That is failing when I enter 123456 into the textbox. Why, though? I know I can replace...
if (sNumberValue.match(/A[0-9]{6}z/))
....with something like...
if (sNumberValue.length == 6 && sNumberValue.match(/[0-9]{6}/))
....or I could assign a maxlength to the input box, of course. The thing is, I really want to know WHY the regular expression isn't responding as I'd expect. Is there a syntax error somewhere in the code?
I need a simple, quick and efficient way to logically branch if I find a string is contained in another string in jquery Most other languages this can be resolved in one or two lines and it would be readable.
I have a simple example below showing how when I pass in the value of the value attribute of option node, and then use if operator to check whether parameter is a string or not, even though it's a string, it converts it to false boolean and triggers the else statement rather than calling a function.callback should be a string so why is it saying otherwise?
I have made a basic form, and I need to combine three values within my form, then create an md5 hash of this string.Then assign it to a hidden variable.My form is here...
Or I have created a pastebin of it here, for easy reading: http://pastie.org/1171757.So I need to be able to combine the three values into a string, create a md5 of the string, then call the value of the string into a hidden value all before posting the form.
I need help with substring or trim function in javascript. Find below my code. Selection holds the value Select State, and length of the string is 14. I need to equate the Selection value to string "Select State" and execute alert message.
function selected_item() { if (Selection=="Select State") alert("Select the State");[code]....
I tried this:
var state=Selection.substring(0,11); and then string would be equated to state variable. But it is not working.
I am currently trying to build a new function in javascript that is supposed to handle a string of text. The idea is that it should find the lowercase letters and uppercase letters in a string and then swap them.
Meaning all lowercase letter becomes uppercase letter and vice versa.
So i am just asking if someone could point me in the right direction or give some tips. I've currently been reading about the toUpperCase(); and toLowerCase(); functions and i am fairly confident i know how to use them for switching, however i still need a way to find the lower , upper character in the string so i later can switch them.
<script type="text/javascript"> var str="Welcome to Microsoft! Microsoft Microsoft"; var stringToBeFound = 'Microsoft' var ReplaceString = 'site' document.write(str.replace(stringToBeFound , ReplaceString )); </script>
My problem is im trying to use string.replace that is not case sensitive and replace every string found. I could use regular expression with it but my stringToBeFound is a dynamic variable im getting it from my database
How can i remove a string from an existing string in javascript. I have a textbox in a form and want to make sure that when the user clicks a button that certain words are moved, like all instances of "hello" should be taken out of the text the user typed in the textbox.
I'm working on some code and am running into brick walls. I'm trying to write out Javascript with Javascript and I've read the clj Meta FAQ and didn't see the answer, read many similar posts (with no luck though), and searched through the IRT.ORG Faqs (www.irt.org/script/script.htm).
The Javascript is designed to open an popup window and then inside that window call another script which will resize that window. There may be another way around this but the reason I tried this approach initially was that I wanted to call the onload handler in the popup window to resize the image only after the image had completely loaded. I've had some code in the primary Javascript file (showimage.js) before that works if the image has been cached but on the first load, it doesn't resize properly which tells me it is probably because it is trying to resize the window based on the image size but it isn't completely known at that point. So I removed that code and tried placing the resizing code in the second Javascript file (resizewindow.js). BTW I've tried other code to open a popup image and automatically size it ie Q1443 at irt.org but that doesn't do exactly what we need.
Even if there is another way to do this with one file, I still want to figure out why this isn't working in case I run into it in the future.
I thought what I would need to do to use document.writeln to write Javascript would be to escape any special characters and to break apart the script tag ie
document.writeln('</SCRIPT>');
would become
document.writeln('</SCR' + 'IPT>');
I have a HTML page and 2 Javascript files. All files are in the same directory and have permissions set correctly.
Here are the 3 files (keep in mind wordwrap has jacked up the formatting):
index.html ---------- <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <title>Test</title> <SCRIPT type="text/javascript" LANGUAGE="JavaScript1.1" SRC="showimage.js"> </SCRIPT> </head>
<body> Click the house<BR> <A ONCLICK="newWindow1('house1.jpg','Nice House')"><IMG SRC="house1thumb.jpg"></A> </body> </html>
showimage.js ------------ function newWindow1(pic,sitename) {
resizewindow.js --------------- function resizewindow() { // Do resizing here. // Right now this isn't being executed alert("resizing window"); }
Can anyone provide some pointers as to why this javascript is failing? I'm using IE6 on Win2k and when I click on the image to open the popup window, it does open the window but it is white with no content and the system immediately goes from about 4% CPU usage to 100% and consistently stays there until I kill that window with the task manager.
