I've got the following source code: function MyMenu()
[Code]...
I wish to execute the lambda function given at menuEntries[i].action. The list is build, but at a click i've got the error that menuEntries[i] is not defined. What should I do? I think
Seeing the examples I have noted that you always use lambda functions. Is there any reason for that? why you don't make something like this:
I think is more clear than:
And we can edit and reuse the function easily, also if you are using an editor like Netbeans you can see all your functions in a list.
Even more, I think in some situations is faster a closure because we are not creating a new object every time we pass the function:
Is there any reason for chosing lambda functions?
In one of my functions I got the following lambda function. It works as intended, but I got a tiny problem. I'm trying to access the function-scooped variable "matched" and set it's value to "true". The problem is that it seems like the variable is existing as a local variable inside the lambda function, even if it's not declared inside the lambda function itself. So, the change "matched = true;" does not effect the variable that I declared.
Code:
//... code
var matched = new Boolean(false);
xmlhttp.onreadystatechange=function() {
if(xmlhttp.readyState == 4 && xmlhttp.status == 200) {
[Code].....
Can you show me an example of javascript LAMBDA codes.
View 1 Replies View Relatedi declared 2 variables which i want to use depending on a conditional statement inside a jquery function unfortunately they don't seem to be working. do they need to be globals?[code]i know for a fact that the code works, when i add an alert inside the conditional statement it pops up fine, but these variables don't seem to get their values applied.
View 2 Replies View RelatedI don't know what I'm doing wrong probably pertains more to Javascript than jQuery.Why can't I access the 'myVar' variable my clicking 'myButton2'?
View 5 Replies View RelatedIm trying to do the following thing, I have a function in javascript which I want to use to call anAJAX event, during this event the variable that is set in the function needs to be passed to the file called by the AJAX event. Basically I create 2 different versions of the same stuff inside the AJAX called files using the variables. But im running into some cross browser related issues, this all works fine in FireFox. However in Internet Explorer it sometimes works but gives javascript errors on line 99999ish. I have the following setup:
My index (currently calling startExample via onclick):
var exampleTest = 1;
function startExample()
{
example = exampleTest;
[Code].....
var attrIndexes = [];
$.get(queryString, function(data) {
attrIndexes = data.split(",");
});
after running this code the original variable is empty so something is wrong
i have this problem in passing values to a variable in a jquery function.
i have a js variable that accepts a certain value and then i want to pass this variable in the jquery function.
For example, this is my script:
var autoScrollBool = "true"
var autoScroolInt = "10" (seconds)
stepcarousel.setup({
[Code].....
i want to replace the value of autostep: {enable:true to enable: utoScrollBool(the variable i created) , when i tried to assign it as is, its not working.
I am trying to use jQuery to populate a number of divs with html from external blog pages:
for(var i = 1;i<=3;i++){
[Code]...
I understand that the 'i' variable is out of the scope of the inline function but I really don't know any other way of doing this.
I want to call a javascript function when a <span> is clicked, pass two variables to it, and then use jquery to hide that span.
A simple example is:
The variables (1,3) & (8,9) are loaded dynamically with a php script. Adding the two variables together isn't the intent of the script, but it seems the simplest way to explain what i'm after.
So how do you get $(this) to work in a function that has to have variables passed to it?
is there a way in jQuery to bind variables to function calls similar as prototype.js does it? See [URL]
E.g. in the slideUp method of jQuery you can specify a callback that is called after the effect has finished. I would like to bind a variable to this call so that it is used inside of this callback as a closure.
//<input type="text" id="s_field" value=""/>
var valid = true;
var div = $("#s_field");
$.post("index.php",{id: 6}, function (data){
[Code]..
When posting data, and getting response need to set valid to false - email is not valid.
1. in function it alerts valid is false
2. outside function it says valid is still true!
even i didn't wrote var valid = false;, but valid = false;I need to set Global "valid" variable to false.
The inside alert works, but the outside one says undefined. Need halps please.
coder = new google.maps.Geocoder();
var coded;
function codeAddress(address) {
[code]....
In jslint's doc it says, "JSLint does not expect that a var will be defined in a block. This is because JavaScript blocks do not have block scope. This can have unexpected consequences. Define all variables at the top of the function." What are some of those unexpected consequences?
View 1 Replies View RelatedHow do i get a variable from one function into another function. I am new to javascript.
Here is my code ...
I'm trying to reuse a script I have but, I'm not able to due to the fact I can't use some variables in a function.
I would like to know why I am not able to use passed variables in javascript.
For example: I call a function submit_data( 'newDomainForm', 'add_domain', 'list_div' ), in the function itself I would like to use the form name (first variable passed) as document.form.domain_name.value.
Later on I would like to use the div id: list_div in document.getElementById( div_id ).innerHTML. This doesn't work.
I have to put the name of the actual div like this: document.getElementById( 'result' ).innerHTML
And to get the value of a form element I have to put the actual name like this:
HTML Code:
I'm looking for examples of variables.
This is what I have. Does this make sense?
function formValidator(){
urrently I have the user log in, choose their character, and then go to a page where they can fight random monsters. When they get to the page to fight with the random monsters, the character's information as well as the random monster's information is pulled from tables in my database.
What I would like to do is when the user clicks the Attack button, perform a function that takes the monster's hp ($hp) and subtracts from it the character's attack combat value ($acv1).
how I can access the php variables within my JavaScript code and how I can go about doing this type of calculation?
I'd like to store the monster's hp in a javascript variable, so that when the character attacks, the hp can be updated until the character has reduced the monster's hp to zero, in which case a php script should be run that updates the character's table.
Below is a stripped down example of code I'm using to count links in a
list. My intent with the ShowLinkNumber() function was to display the
number of the current link. (e.g. click on link 2, and the message "2"
pops up; click on link 4, and you see a "4.")
For reasons I can't trace, my function always displays the last number
in the list. Why does it do this, and can anyone suggest a way to
achieve my goal without adding markup? Code:
I want a page with a hyperlink that passes a variable to another 'pop-up' page (in this case a name, its just an example) and new pop-up page prints a message followed by the variable thats passed.
Here is the code as it is right now
<html>
<head>
<script language="javascript" type="text/javascript">
function popitup(a)
[Code]....
In short, I just want the pop-up page to print 'Hello there Toby' or whatever name I choose to pass across. The 'testpopup.html' url is just the initial webpage.
I have a vague idea of what might be going wrong but I have no idea what I should be doing instead. Here is what I'm trying to do: User inputs X and Y coordinates into form validate that they are numbers do a little bit of maths redirect to a php script with a single variable tacked onto the end of the url Here is the form code:
//part of a larger php script to make the form
echo "<form name='gotoForm' onsubmit='return coordCalc()'>
<fieldset>
<legend>Go to Square</legend>
X <input type='text' id='X' size='1' maxlength='3'/>
Y <input type='text' id='Y' size='1' maxlength='3'/>
<input type='submit'
[Code]...
I have been asked to make some changes to a form that uses Javascript for the form validation. There is a 'function' that contains the variables of the various form fields and then further code to raise 'alerts' if one of the fields on the form hasn't been filled in. My problem is that for some reason I am unable to add an extra variable to this code after the field of 'County' (this will hopefully make sense when you see the code / link...) and I am stumped as to why. I am able to add variables for all of the other required fields except for 'Postcode' after 'County'. This is the case for both forms. The link is here: [URL] and the code I am trying edit is below. The issues seems to be when I add && isPostcode() to this chunk of code:-
Code JavaScript:
function checkAvailibility()
{
// re-calculate...
calculate ();
[Code]....
I'm inexperienced with JS and I'm hoping that someone will knowCallback2)What I'm trying to achieve is for variables which come from PHP to be added to the map automatically. So far I have determined that variations on the theme of.Can someone tell me where I am going wrong? Hopefully someone looking at this is chuckling at the triviality of it!
View 5 Replies View RelatedI've attached a cut-down version of a script I am working on. It's a pretty simple button with a function attached, which creates a random number and compares it with a preset value.I can't seem to get the function to read the variables
Code:
#<html header>
<script language="javascript" type="text/javascript">
[code]....
First off I didn't know whether to post this here or in the PHP section since it deals with both, but mostly JS. I have a PHP scraper that scrapes the job title, company name and location from a website and stores them in separate arrays. These values are then extracted out one at a time from the array and stored into a string, that is then passed to a Google Maps API.
I can make this successfully happen once, the thing is I need to do it multiple times. I have an idea on what I should do but don't really know how to implement it (correctly). The idea I had was to create a function in the JavaScript section that accepts three values from PHP. This function would be called in my PHP for loop that extracts the values from the array into a string. The thing that confuses me is that the Map function is called via <body onLoad="initialize()">. Here's the link to my code (http://pastebin.com/rTfzJM16)