I have been working on my project where I had to do some updates on my data records. After I finished my update I got an error: SyntaxError: identifier starts immediately after numeric literal and this line of code was below that error in firebug : maxScores.ew-19a = ''
I looked up in my code and I found where is this output coming from, here is the code:
var maxScores = new Object;
<cfoutput query="getRec">maxScores.#LCase(tCode)# = '#maxScore#';</cfoutput>
In my update I had to put - symbol between letter and number, in old data I did not have that so I think that causing the problem here. I was wondering how I can prevent this or if there is any method that I have to put around my output to prevent this? If you know how this can be fixed pleas let me know. Thank you.
ColdFusion will attempt to subtract ew from 19a when you just dump it between to pound signs like that. You will need to use bracket/object notation here. Try this:
<cfoutput query="getRec">
maxScores.#LCase(getRec["tCode"][currentrow])# = '#getRec["maxScore"][currentrow]#';
</cfoutput>
If you want to Lower case something do it in the query. Outputing JS using CF is useful and solves many problems, but you want to keep it as clean as possible to keep your brain from fogging over. :)
Related
I use winston to perform logging currently and have written a common method for it to be used all over project. Problem is, many of logging statements are like, logger.info("here is the data" , data)
With comma as concatenator, i couldn't log data in console. data can also be a content containing comma so I wouldn't be able to just use replace ',' by '+' .
My idea is regex can be like, if text starts with ' or " and its next character is ',' at end of quotes, replace with '+'
Ain't sure if it would be right but still, please help with your suggestions.
Perhaps you can monkey-patch it with something like
logger.info = ((infoFunc) => {
// create the patched info that concatenates all arguments
// before calling the original logger.info
let patch = () => {
// put any logic here that you need to achieve the desired result.
var message = args.join('');
infoFunc(message);
};
return patch;
})(logger.info);
Not tested
Just make sure it's run right after the logger is set up.
This will work as a quick fix to get things running but I wouldn't recommend leaving it in your code and should be removed once all calls to logger.info have been cleaned up.
I am learning JavaScript and I see %value% in a code but I do not know what does it mean or how to use it. Can anyone please help me explain to me. Thank you very much.
var formattedLocation = HTMLworkLocation.replace("%data%", work.jobs[job].location);
"%data%" is just a literal string. This code will take the value of HTMLWorkLocation, look for the first occurrence of %data% in it, and replace that with the value of work.jobs[job].location, and store the resulting string in formattedLocation.
var work = {
jobs: [{
location: "Home office"
}]
};
var job = 0;
var HTMLworkLocation = "John is located at %data%";
var formattedLocation = HTMLworkLocation.replace("%data%", work.jobs[job].location);
console.log(formattedLocation);
This is probably part of a template system that's used to replace placeholders like %data% with values that come from a table.
You're using string.replace which takes a string or regular expression as it's first argument. Based on the code you posted it looks like you're looking for the string "%data%" (or whatever string you're looking for) in HTMLworkLocation and replacing it with the value in work.jobs[job].location. Then it is being stored in formattedLocation.
I would put a debugger; line after that line of code so you can see what the values are in the debugger console. That might help make more sense of things.
Here is more info on the str.replace method with some examples
I have been banging my head over this (probably simple) issue and am missing something really basic. Why does this first code display the expected output
xmlhttp=xmlhttp.responseXML;
document.getElementById("CenterDataBox").innerHTML= xmlhttp.getElementsByTagName("ShowDay")[0].childNodes[0].nodeValue;
and this second one doesn't? I think this is something really simple I've overlooking.
xmlhttp=xmlhttp.responseXML;
var DayOfShow = xmlhttp.getElementsByTagName("ShowDay")[0].childNodes[0].nodeValue;
document.getElementById("CenterDataBox").innerHTML= DayofShow;
The error is that your variable DayOfShow is not what you're using. You're using DayofShow, without capital '0' letter.
JavaScript is case-sensitive.
= DayofShow should be = DayOfShow in example 2.
You got mispelling of set variable. In example 2 i assume you're getting error var not defined. That is because you set value to DayOfShow and below you set inner html to DayofShow. Javascript is case sensitive.
Here you can read more about JS.
Or how would I convert a list of SelectItems to a JavaScript array?
Currently I am trying this:
<h:outputScript>
<!-- Trailing commas valid as per http://www.ecma-international.org/ecma-262/5.1/#sec-11.1.5 -->
var possibleOption = [<ui:repeat value="#{bean.mySelectItems}" var="selectItem">"#{selectItem.value}",</ui:repeat>];
var firstOption = possibleOption[0];
</h:outputScript>
And it works, except that firstOption is undefined although possibleOption gets correctly populated when I check in the console. Maybe a timing problem? Is this even valid JSF, and if so, is there a "blocking" version of ui:repeat or something?
Or which other approach would you recommend?
Aaaah, I got it:
actually I was using:
var chosenOption = '#{empty bean.chosenOption ? possibleOption[0] : bean.chosenOption}';
Which is (now) of course wrong, because I was using possibleOption[0] inside the EL expression headbang
Sorry, one should always post the actual code I guess, not some dumbed down showcase ;)
I have a very specific problem concerning a regular expression matching in Javascript. I'm trying to match a piece of source code, more specifically a portion here:
<TD WIDTH=100% ALIGN=right>World Boards | Olympa - Trade | <b>Bump when Yasir...</b></TD>
The part I'm trying to match is boardid=106121">Olympa - Trade</a>, the part I actually need is "Olympa". So I use the following line of JS code to get a match and have "Olympa" returned:
var world = document.documentElement.innerHTML.match('/boardid=[0-9]+">([A-Z][a-z]+)( - Trade){0,1}<\/a>/i')[1];
the ( - Trade) part is optional in my problem, hence the {0,1} in the regex.
There's also no easier way to narrow down the code by e.g. getElementsByTagName, so searching the complete source code is my only option.
Now here's the funny thing. I have used two online regex matchers (of which one was for JS-regex specifically) to test my regex against the complete source code. Both times, it had a match and returned "Olympa" exactly as it should have. However, when I have Chrome include the script on the actual page, it gives the following error:
Error in event handler for 'undefined': Cannot read property '1' of null TypeError: Cannot read property '1' of null
Obviously, the first part of my line returns "null" because it does not find a match, and taking [1] of "null" doesn't work.
I figured I might not be doing the match on the source code, but when I let the script output document.documentElement.innerHTML to the console, it outputs the complete source code.
I see no reason why this regex fails, so I must be overlooking something very silly. Does anyone else see the problem?
All help appreciated,
Kenneth
You're putting your regular expression inside a string. It should not be inside a string.
var world = document.documentElement.innerHTML.match(/boardid=[0-9]+">([A-Z][a-z]+)( - Trade){0,1}<\/a>/i)[1];
Another thing — it appears you have a document object, in which case all this HTML is already parsed for you, and you can take advantage of that instead of reinventing a fragile wheel.
var element = document.querySelector('a[href*="boardid="]');
var world = element.textContent;
(This assumes that you don't need <=IE8 support. If you do, there remains a better way, though.)
(P.S. ? is shorthand for {0,1}.)