javascript

In Javascript convert a string so it can be used to call a property

So, I have an associative array and the keys in the array are properties of an object. I want to loop through the array and in each interation do something like this: Object.key This however does not work and results in returning undefined rather than the value of the property. Is there a way to do this? Thanks ...

Parsing and replacing Javascript identifiers with Rhino in Java

Suppose I let the user to write a condition using Javascript, the user can write conditions to perform a test and return true or false. E.g.: INS>5 || ASTO.valueBetween(10,210) I want to find which variables are used in the script that the user wrote. I tried to find a way to get the identifier names in Java. The Rhino library didn't ...

How to check if user submit Arabic words from a form?

Hi Experts.. Is there any reliable way to check if user has entered Arabic words into a form and tries to submit it? Can Javascript handle this? Or, only server script like .NET can do this? I'm thinking that if possible the script should directly prevent the user from inputting Arabic words into the form and show an alert pop up. Ple...

Try & Catch — How do you use them effectively?

I've been trying to teach myself JavaScript, and one thing I was reading on is the try/catch structure. Unfortunately, the tutorial doesn't provide much explanation on how it would be useful, just how to set it up. Can anyone offer some insight? ...

Javascript debugging: stopping/breaking at every javascript invocation

I am dealing with a complex legacy javascript code base, and it's difficult to figure out where to put breakpoint (I have to find the files, put a breakpoint in firebug etc). Is there a way so that Firebug breaks on the first javascript execution that it encounters every time? In other words, every time I click on something on the pag...

Set default value for a input file form

Hi, I have an input file HTML form and I want to set the initial value for the file path in an HTML form . I try to change tag "value" but it doesn't work anyway. <input type="file" name="testcase" value= "C:\test.txt"> Please give me some advice for this small problem. Thanks. ...

Hooking a synchronous event handler on a form submit button in JS

Hi, I'm working on a security project in javascript (something I honestly have not used), and I'm having some trouble with EventListeners. My code looks something like this: function prevclick(evt) { evt.preventDefault(); document.loginform.submitbtn.removeEventListener('click',prevclick,false); var req = new XMLHttpRequest(); req.open...

Javascript Problem

I am trying to show a script in a div tag. But in the div tag the script does not run. Here is my Code: <div id="div0" align="right"> <script type="text/javascript"> <!-- alert("Hi"); --> </script> </div> It does not work for me. Please anybody tell me, what is the problem? Edit: My complete code is that: <htm...

implement code folding for a report with jquery

I'm trying to collapse or expand table rows with + and - sign displayed on the first column, using jquery. <script type="text/javascript"> $(document).ready(function() { $("tr.header").click(function () { $("tr.child", $(this).parent()).slideToggle("fast"); }); }); I'm trying t...

Scope of variables inside of javascript

I have the following code sample that im trying to wrap my head around $(document).ready(function () { test("load json", function () { length = 0; // length = 0 $.getJSON("plugins/form.json", function (data) { length = data.fields.length; // length = 4 }); ...

Javascript Confirm Delete in One PHP File (on href)

<p><span class="linky"><a href="deletephone.php?id=' . $row['id'] . '">Delete Phone</a></span></p><br /> I have the above code that I am using to link to a delete script. I want to somehow incorporate Javascript with a simple onclick confirmation. This way if they choose OK, I can run the code to delete the item from the database, but ...

Calling and writing jquery/javascript functions

I think I have not got the syntax correct for writing a javascript function and calling it to assign its return value to a variable. My function is: getObjName(objId){ var objName =""; $.ajax( { type : "GET", url : "Object", dataType: 'json', data : "objId="+objId, success : function(data) { objName = data; ...

can anybody help me with using wp_print_scripts, wp_enque_scripts, wp_head, wp_register_script

I want my scripts and css files to be added in the footer and header respectively, ideally they should be minimized and compressed too, I think these functions can help but iI am not aware of using them. can anybody help me with these ? wp_print_scripts, wp_enque_scripts, wp_head, wp_register_script ...

Auto populate a text field based on another text field

I am trying to auto-populate a text field based on the value of another input field. Currently trying to do this using observe_field helper like this: <%= observe_field( :account_name, :function => "alert('Name changed!')", :on => 'keyup' ) %> <% form_for(@account, :html => { :id => 'theform' }) do |f| %> ...

What is wrong with this javascript?

i use this javascript syntax for validating a checkbox... alert(document.getElementById("ctl00_ContentPlaceHolder1_Chkreg").checked); if (document.getElementById("ctl00_ContentPlaceHolder1_Chkreg").checked == false) { document.getElementById("ctl00_ContentPlaceHolder1_ErrorMsg").innerHTML = "please select the checkbox"; ...

Control Javascript > CSS through Flash

Hi All, Ideal situation/setup: A page containing 1 Flash movie and a separate div containing a few hyperlinks. These hyperlinks each have a unique class name like so: Copy code <ul> <li><a href="" class="randomname1"></a></li> <li><a href="" class="randomname2"></a></li> <li><a href="" class="randomname3"></a></li> <li><a hre...

Javascript Linksys router-style log pop-up.

I am wondering how to do a simple Javascript log in for my web pages on my dev server. I want it to be very simple, like the ones that pop up when you go to 192.168.1.1 to adjust the settings on your Linksys router. Any suggestions? ...

deleting files in javascript

is it possible to delete a file(s) inside the directory by just using javascript ?. what I currently have is, an index.php which displays the name of the files in the same directory and and a checkbox to each file name and at the bottom is a delete button. what I want to happen is, delete all the selected checkboxes once the delete butto...

Filling an IFRAME with dynamic content from JavaScript

I have an IFRAME that should be filled with content from JavaScript. Had the content be on the server all I had to do is: function onIFrameFill() { myIframe.location.href = "HelloWorld.html"; } But the content I have is a HTML page generated on the client and represented as a string (I have not much influence on it)....

Is Minus Zero some sort of JavaScript performance trick?

Looking in the jQuery core I found the folloiwng code convention: nth: function(elem, i, match){ return match[3] - 0 === i; }, And I was really curious about the snippet match[3] - 0 Hunting around for '-0' on google isn't too productive, and a search for 'minus zero' brings back a reference to a Bob Dylan song. So, can anyone t...