Develop Reference

Editing link javascript:open

I have a javascript: link. I want to insert there different values that I have in the variables GEO_LATITUDE and GEO_LONGITUDE, but I can not do it in any way.
javascript:open('http://maps.google.com/maps?q='#GEO_LONGITUDE#','+', '#GEO_LATITUDE#', 'popup-example', 'height='+window.innerheight+',width='+window.innerwidth+'resizable=no')
For example, if these variables are 46.15 and 50, then the reference should look like this
javascript:open('http://maps.google.com/maps?q=46.15+50', 'popup-example', 'height='+window.innerheight+',width='+window.innerwidth+'resizable=no')

If the variables are globals, your code would work if you removed the # character, used + for concatenation, and were careful about the quotes:
javascript:open('http://maps.google.com/maps?q=' + GEO_LONGITUDE + '+' + GEO_LATITUDE, 'popup-example', 'height='+window.innerheight+',width='+window.innerwidth+'resizable=no')
// −−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−^^^−−−−−−−−−−−−−^^^−−−^^^
If they aren't globals, you'll have to have the code call a function that has access to the variables.

You can simply use concatenation
javascript:open('http://maps.google.com/maps?q=' + GEO_LONGITUDE + '+' + GEO_LATITUDE, 'popup-example', 'height='+window.innerheight+',width='+window.innerwidth+'resizable=no')

Store data having a double quote in a javascript var

I have a var in script which has data like . But when i add this to another variable its not working.
var x = '32"';
onclick="javascript:selectSize(' + "'" + x + "'" + ');"
I want
onclick="javascript:selectSize('32"');"
But it becomes
onclick="javascript:selectSize('32"');""=""
i don't know whats happening

onclick="javascript:selectSize('32"');"
^ ^
The HTML parser will parse the attribute value before passing the value of it to the JS engine for execution.
You are using a " to delimit the attribute value.
The second " ends the attribute value.
If you want to use " as data in an attribute value delimited with " then you must express it as an entity (e.g. ").
var html_x = x.replace(/"/g, """);
Escaping becomes very painful when you start generating nested languages.
You have JavaScript embedded in HTML embedded in JavaScript.
Avoid mashing strings together to construct your DOM. Use DOM methods directly instead.
var x = '32"';
var button = document.createElement("button");
button.addEventListener("click", function (event) {
selectSize(x);
});

from comment, Make use of encode/decode URI Component as follows
var a=encodeURIComponent('abc"');
console.log(a);
console.log(decodeURIComponent(a));

Don't seem to get $().attr('src') to do its job

First post here, so please be gentle ;-)
I've been learning coding over the last couple of weeks by making a dummy page, and been implementing what i learn on it incrementaly as i progress, hence it's a mixed bag where the functionality/code is according to when i wrote it, based on pure html/CSS, inline javascript, external javascript, and finally jquery.
So i mostly wrapped it up and i'm now cleaning up the mess, and part of my mission is to cull functions and lines of codes, and in one of them i'm kind of stuck.
The before was 30 buttons calling to 30 different functions onclick like so:
function cell3() {
document.getElementById('base3').src='images/1/3/' + x + '.png';
document.getElementById('base3b').src='images/1/3/' + x + '.png';
document.getElementById('v2base3').src='images/2/3/' + x + '.png';
document.getElementById('v2base3b').src='images/2/3/' + x + '.png';
document.getElementById('cell3').style.backgroundColor= x ;
}
Where a global variable (x) defines the folder paths for images to replace the images within some divs when clicking the button (cell3). It also changes the bGroung color of it. Sorry if the naming is a bit confusing...
So i'm removing all 30 functions and the 30 onclick calls with this bit of jquery:
$('button').click(function(){
var eyeD = $(this).attr("id");
var newURLa = 'images/1/' + eyeD + '/' + x + '.png';
var newURLb = 'images/2/' + eyeD + '/' + x + '.png';
$('base' + eyeD).attr('src', newURLa);
$('base' + eyeD + 'b').attr('src', newURLa);
$('v2base' + eyeD).attr('src', newURLb);
$('v2base' + eyeD + 'b').attr('src', newURLb);
$(this).css( "background-color", x );
document.getElementsByid('check').innerhtml = eyeD;
});
For that to 'work' i changed the button's names from 'cell1', 'cell2, etc. to '1', '2', etc.
Now the thing is, when clicking on the buttons the var 'eyeD' takes the value from the button ok. ('1', '2', etc.). The elements ID's are formed correctly ('base1', 'base2'... 'base1b', base2b'...), and the URL's are formed correctly. (The last line in the code is a p element that displays values so i could try to troubleshoot it) The background color also changes as expected. But the images do not get replaced.
Tried adding commas to the resulting URL's in case it was a syntax issue, but nothing happens. i even went freestyle and tried it with the =url() on it, different commas in different places, etc. So basically scraping the barrel here. Also wrote a url without variables to see if that would work, but still nothing. Also getting no errors when looking at the console.
It's probably a basic 'DOH!' thing, but right now i have a mental block...
Also, is there a way to keep the original naming and just retrieve the numbering part of the ID's? Thought about using the [4] identifier to get the 5th digit, but that won't work when running double digit numbers. (10, 11, etc)
Thanks!

Your jQuery lines accessing the elements are missing the # sign.
Change these...
$('base' + eyeD).attr('src', newURLa);
To this...
$('#base' + eyeD).attr('src', newURLa);
Also, your last line where you use plain JS, can be done in jQuery as well with less code.
document.getElementsByid('check').innerhtml = eyeD;
To...
$("#check").html(eyeD);
However, you should always use distinct ID's for elements. If you need to use multiple elements at the same time, use a class instead.
$(".check").html(eyeD);

You're grabbing an element incorrectly.
Either Grab an element by it's class name like so:
$('.v2base' + eyeD + 'b').attr('src', newURLb);
Or by its ID:
$('#v2base' + eyeD + 'b').attr('src', newURLb);

Problem solved!! It was indeed calling the id with the hash, but also it has to be called with double quotation marks. Single inverted commas won't work.
So the working format is
$("#v2base" + eyeD + "b")
but it won't work like so
$('#v2base' + eyeD + 'b')
Thanks everyone, it's been emotional

how to embed value with an apostrophe in querystring

I have the following javascript:
tr.append("<a href='add_widget.html?id=" + data[i].id + "&pg=" + data[i].page_number + "&dest=" + data[i].dest + "&name=" + data[i].name.replace("'","\\'") + "'</a><button class='btn btn-xs btn-primary'>Edit</button> </td>");
The code in question has to do with the name field.
If I have a name like "John Doe" when I click on the hyperlink created by the above javascript, the new page's querystring has the full name.
However, if I try to pass a name like "John's stuff", the above logic creates a query string variable that looks like this:
&name=John\
How can I change the above code so that the entire string "John's stuff" is passed to the add_widget.html page?
Thanks.

replace("'","%27")
try http://meyerweb.com/eric/tools/dencoder/ it's an online URL encoder/decoder.

When you're trying to "protect" characters, you have to keep in mind what you're protecting them from. In this case, there are two interpreters you have to worry about:
You're building HTML, so you have to worry about the HTML parser;
You're building a URL, so you have to worry about how the browser and the server will parse the URL.
To deal with the first problem, you can replace the quotes with the HTML entity equivalent ('). To deal with the second, you can use encodeURIComponent().
I think you'd want to do the encodeURIComponent() call first, to avoid having the HTML entity notation get messed up. The entity notation will be gone after the HTML parser is finished with the string anyway:
function qEncode(str) {
return encodeURIComponent(str).replace(/'/g, "'");
}
To use that:
tr.append("<a href='add_widget.html?id=" +
qEncode(data[i].id) + "&pg=" +
qEncode(data[i].page_number) + "&dest=" +
qEncode(data[i].dest) + "&name=" +
qEncode(data[i].name) +
"'</a><button class='btn btn-xs btn-primary'>Edit</button> </td>"
);
Note that you could also encode double-quote characters too.
A totally different way of working around this problem would be to build the DOM content with DOM APIs. By doing that, you'd completely avoid the HTML parser, and you'd just need encodeURIComponent().

You need to think, what will be interpreting my code, so what do I need to escape for?
Your code will be interpreted by the HTML Interpreter in the browser
Your code will be interpreted as a URI
This means you need to escape/encode them in reverse order. Luckily JavaScript provides a URI encoder as encodeURIComponent, but it doesn't provide a HTML one (probably as we have DOM Methods) but it isn't too hard to implement for important characters, e.g.
function html_encode(str) {
var re_chars = /[<>'"]/g;
function replacer($0) {
return '&#' + $0.charCodeAt(0) + ';'
}
return str.replace(re_chars, replacer);
}
// example follows
html_encode('<foo bar="baz">'); // "<foo bar="baz">"
So for you,
attrib_value = html_encode(/* ... + */ encodeURIComponent(data[i].name) /* + ... */ );
For completeness,
function html_decode(str) {
var re = /&(?:#\d{1,3}|amp|quot|lt|gt|nbsp);/g, // notice extra entities
d = document.createElement('div');
function replacer($0) {
d.innerHTML = $0;
return d.textContent;
}
return str.replace(re, replacer);
}
// and an example
html_decode('<foo bar="baz">'); // "<foo bar="baz">"

Using escape(data[i].name) instead of data[i].name.replace("'","\\'"), will solve your problem.

Dynamic string wont change when changing the values that make it

http://jsfiddle.net/zzTsc/
I have a JSON that holds some values which get concatenated into a string but when I change the value of the JSON the string doesn't take the name values. How can I make the string take the new values without re-declaring the same string?
See I could easily put string = name.first + "<br />"+name.last; right below where I change the JSON value but then when I wanna edit the format of that string I'll have to change it twice.

That's not how variables work. You have to set the value of string again for it to update.
Here's an improved version so you don't have to change it twice if you want to edit something:
function generateString(name) {
return name.first + "<br />"+name.last;
}
var string = generateString(name);
​Demo

That's not going to work as you describe it, but you could declare a function which returns the appropriate string.
So instead of
string = name.first + "<br />" + name.last;
You'd have:
var stringfunction = function() {return name.first + "<br />" + name.last;}
and when you wanted to use it you'd call it:
alert(string); //old
alert(stringfunction()); //new
EDIT: I just realized you're talking about changing the format (presumably at runtime). There are a number of ways to use string formats in javascript, meaning that you could have a "format" variable used inside the stringfunction, which you could change at runtime to modify how the resulting string is formatted. It's been too long since I used one of those tools though, so I'll leave it to someone else to explain how to do string formatting in javascript.

This is because your string is a basic type and therefore holds the actual data instead of a pointer. When you change the data you think should change the string, it only changes the data. This can be seen by just re-issuing the code used to construct the string
$('#test').empty().append(name.first + "<br />"+name.last);
http://jsfiddle.net/zzTsc/4/