I'm encountering a situation I can't figure out and passing along a string from javascript to PHP via jquery. Simply put when I have a y+ it doesn't seem to pass from javascript to PHP, but when it says y- it does pass. Here is a code for the HTML.
This happens if I type in any math expression that starts with y+. It also happens if it starts with x+. If I change the equation around in anyways as to the string being passed it works unless it starts with one of those two. I've looked at how input_get works but can't find any limitations on the plus sign, similar to how you have to be careful with things like quotes or . I figure there is something like this which is stopping the string from being passed along.
Javascript side:
function initResults(data) {
document.getElementById("test").innerHTML=data;
}
function init() {
var equation=document.getElementById("username").value;
$.get("test.php",{equation: equation},initResults);
}
PHP side:
$equation=filter_input(INPUT_GET,"equation");
print"$equation from php file";
There are no error messages, it just doesn't pass. Below is two screenshots first where it works, the other where it doesn't. I've typed in multiple examples on what works and what doesn't work which I included in the third screenshot. Thanks!
Related
public string GetEscapedTitle() { return Title.Replace("'", "\\'").Replace("\"", "\\\""); }
I created the above to deal with issues I ran into when doing this in the view:
<a onclick="AddToMyList('#Model.Title', ...
That seemed to fix the errors I was getting when the Title contained single or double quotes. But this wasn't the only property I had the issue with so I had this brilliant idea to create an extension method like so:
public static string EscapeQuotes(this string s)
{
return s.Replace("'", "\'").Replace("\"", "\\\"");
}
Unfortunately, this put me back to square one and I had the same error I got in the beginning when I used it. So what's the difference?
The only thing I can think of is that maybe with the GetEscapedTitle() method razor encodes it after it's escaped but maybe with the extension method it still somehow gets encoded before the extension method is run? That doesn't make sense to me but it's all I can think of right now for why it wouldn't work. :(
Edit: FYI I also just tried adding the .Replace() calls directly in the razor code and that works perfectly fine. But for some strange reason if I do it in the extension method it won't work.
I am still new a Javascript tried earching and tried the development tool in Chrome, too see if I could find the problem.
Working in Intellij IDEA 13, Java, javascript and xhtml.
My problem is that I have a piece of javascript, then in IDEA when moused over, says that
Expression Expected
the javascript code looks the following
<script type="text/javascript>
function nameOfFunction(){
if(#{trendAnalysisLocationReportController.model.showTargetLine}){
this.cfg.series[this.cfg.data.length-1].pointLabels = {
show: false
};
}
}
<\script>
the method in the if sentence is a java method with a boolean return value.
the error is shown when hovering
'#{'
if Had a look at the following questions, before :
Expected Expression
boolean in an if statement
But didnt get me a solution.
what Iam I doing wrong ?
It looks as though the problem is the part that you've got within the #{...} block. Without knowing the context, it's hard to be sure, but is this something in a view/JSP page that's supposed to be replaced with a property at runtime? The if block will expect the part inside the brackets to be a boolean value, so if that's rendered to either 'true' or 'false' it would execute at runtime but would likely show the error you're seeing in your IDE as it's not actually a valid piece of JavaScript. If, on the other hand, you're expecting to be able to call your Java method/property from your JavaScript code, you're going to need to do something that requests that value from the server-side code - AJAX or similar.
Also worth noting that we can't see what this.cfg is supposed to represent. If that's your entire script block, then there's nothing that defines the cfg object within the current scope.
One last thing, you should change the <\script> end element to as it won't be understood properly by some browsers.
I have an issue with JavaScript case sensitivity and I will need your valuable piece of advice here. I have the following object created:
var foo = function () {
this.myColor1 = '#000000';
this.MyColor2 = '#FF2000';
this.MyCOLOR3 = '#FFFFFF';
}
as you can see, each property may come in any case form, lowercase, uppcase, mixed, etc. These values are coming from a database and I don't have control onto them.
I want to be able to call them ignoring the case sensitivity. For example, I would like to be able to call them like this:
console.log(foo.mycolor1);
// or
console.log(foo.myColor1);
I guess my only approach to achieve this, would be to convert everything in, let's say, lowercase when I define those, and then, when I call them back to convert my request into lowercase again.
A little piece of background here; my aim is to provide an SDK to a few developers that they will write their own code for a platform I am working on. These values will be saved by the developers themselves into a database. For some reason, all those values are stored in lowercase. So, I either have to tell them 'no matter how you set them, you should request everything in lowercase', or, ideally, I should find a way to convert everything before their request is post.
An idea would be to write a method, and tell them to make the request like this
foo('mycolor1');
foo, is going to be a function that would handle the case sensitivity easily. But, I would prefer to use the foo.mycolor1 notation, so ... your help is needed :)
FYI, jQuery is available!
Thank you,
Giorgoc
when you render the javascript from DB use toLower() to set the variables names... and then reference them in lower case...
using javascript, I generate HTML code, for example adding an function which starts by clicking a link, like:
$('#myDiv').append('click');
So start() should be called if somebody hits the link (click).
TERM could contain a single word, like world or moody's, the generated HTML code would look like:
click
OR
click
As you can see, the 2nd example will not work. So i decided to "escape" the TERM, like so:
$('#myDiv').append('click');
Looking at the HTML source-code using firebug, is see, that the following code was generated:
click
Thats works fine, until I really click the link - so the browser (here firefox) seams to interpret the %27 and tries to fire start('moody's');
Is there a way to escape the term persistent without interpreting the %27 until the term is handled in JS? Is there an other solution instead of using regular expressions to change ' to \'?
Don't try to generate inline JavaScript. That way lies too much pain and maintenance hell. (If you were to go down that route, then you would escape characters in JavaScript strings with \).
Use standard event binding routines instead.
Assuming that $ is jQuery, and not one of the many other libraries that use that unhelpful variable name:
$('#myDiv').append(
$('<a>').append("click").attr('href', 'A sensible fallback').click(function (e) {
alert(TERM); // Because I don't have the function you were calling
e.preventDefault();
})
);
See also http://jsfiddle.net/TudEw/
escape() is used for url-encoding stuff, not for making it possible to put in a string literal. Your code is seriously flawed for several reasons.
If you want an onclick event, use an onclick event. Do not try to "inject" javascript code with your markup. If you have the "string" in a variable, you should never need to substitute anything in it unless you are generating urls or other restricted terms.
var element = $('<span>click</span>');
element.bind('click', function () { start(TERM); });
$('#myDiv').append(element);
If you don't know what this does, then go back to basic and learn what events and function references in javascript means.
That escape() function is for escaping url's for passing over a network, not strings. I don't know that there's a built-in function to escape strings for JavaScript, but you can try this one I found online: http://www.willstrohl.com/Blog/EntryId/67/HOW-TO-Escape-Single-Quotes-for-JavaScript-Strings.
Usage: EscapeSingleQuotes(strString)
Edit: Just noticed your note about regular expressions. This solution does use regular expressions, but I think there's nothing wrong with that :-)
The page having problems is...
http://schnell.dreamhosters.com/index.php?page=gallery#
I use Firebug to debug my jQuery and other code tidbits and it's been proving very useful for Javascript/jQuery debugging. However, at the same time, it's been one of the most frustrating debugging experiences I've ever gone through. I'm not sure why but sometimes it seems like I can copy someone else's methodology from a tutorial, character for character, and yet still come up with errors.
In any case, the problem here is that Firebug claims there is a bug on line 20 of the source.
missing : after property id
[Break on this error] $('#table').animate({"left: " + attr + "px"}, 2000);\n
This bug seems like a huge load to me because the colon is right there! And this is why debugging jQuery/Javascript is such a pain sometimes. The error messages are rather convoluted and sometimes don't even make a lick of sense to me. Or maybe that's just Firebug.
Either way, the goal I'm going for here is that I'm trying to dynamically change the animate function such that the more you click the left arrow, the further left the grid of images is shifted (due to the nature of the CSS 'left' property). I have Javascript variables and a hidden input tag to help hold essential values, but the major hurdle is getting the animate function to recognize these variables. Near as I can tell it will only accept string literals for arguments on how to animate and the documentation doesn't help me because it doesn't discuss the use of variables with animate, as if it's impossible.
Well, let's just say I don't like impossible, he likes to get in my way a lot.
The object literal passed to the animate function is not well formed, it should be:
$('#table').animate({left: attr + "px"}, 2000);
Edit: Looking closely to your code, you are also trying to get a value from an input with id = "count", and you have a missing # character to have an ID selector:
var count = +$('#count').val(); // get #count value as Number
You are also incrementing this count variable, but you should first convert it to Number, because the value attribute of input elements are string. (I did it using the unary plus operator on the right-hand side of the assignment).
You have to convert it to a number, because if you add two variables and one of them is a string, concatenation will take place:
"1" + 1 == "11"
Try:
$('#table').animate({left: attr}, 2000);
The "px" units of measurement here aren't necessary. That aside, the above is the correct creation of an anonymous object. You were just putting a string inside curly braces.