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  • Javascript function call causes error

    - by Ankur
    I am trying to call a function "makeQuery" and it's not working, FireBug is telling me: missing ; before statement [Break on this error] makeQuery(this.id){\n I don't quite understand where it wants me to put the ";" $(".predicate").click(function () { makeQuery(this.id){ alert(this.id); } }); function makeQuery(value){ queryString = queryString+"val="+value+"&"; variables = variables+1; alert(queryString); alert(variables); }

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  • Javascript callback and google maps api question

    - by es11
    I am using google maps api v3 and have an array of arrays object: MVCArray.<MVCArray.<LatLng>> I want to iterate over this. I see that MVCArray has a method forEach which uses a call back, but I have no idea how to use this (I haven't done much js). The api defines this method as follows: forEach(callback:function(*, number))) Could somebody please show me an example of how to use this given an MVCArray of MVCArrays?

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  • Update time descriptions every minute using jquery/javascript

    - by Amy Neville
    I have created the following code to update the text contents of all spans like this every minute. There are numerous of these spans on the page which all need to be updated every minute: <span unix="1372263005" class="time_ago">4 minutes ago</span> The code is as follows: window.setInterval(function(){ var unix = $(".time_ago").text(); var now = new Date().getTime(); var amount = 0; var difference = 0; difference = now - parseInt(unix); if (difference < 60) { $(".time_ago").text('<span unix="' + unix + '" class="time_ago">a few seconds ago</span>'); } else if (difference < 120) { $(".time_ago").text('<span unix="' + unix + '" class="time_ago">a minute ago</span>'); } else if (difference < 3600) { amount = floor(difference / 60); $(".time_ago").text('<span unix="' + unix + '" class="time_ago">' + amount + ' minutes ago</span>'); } else if (difference < 7200) { $(".time_ago").text('<span unix="' + unix + '" class="time_ago">an hour ago</span>'); } else if (difference < 86400) { amount = floor(difference / 3600); $(".time_ago").text('<span unix="' + unix + '" class="time_ago">' + amount + ' hours ago</span>'); } else if (difference < 172800) { $(".time_ago").text('<span unix="' + unix + '" class="time_ago">a day ago</span>'); } else if (difference < 2635200) { amount = floor(difference / 86400); $(".time_ago").text('<span unix="' + unix + '" class="time_ago">' + amount + ' days ago</span>'); } else if (difference < 5270400) { $(".time_ago").text('<span unix="' + unix + '" class="time_ago">a month ago</span>'); } else if (difference < 31622400) { amount = floor(difference / 2635200); $(".time_ago").text('<span unix="' + unix + '" class="time_ago">' + amount + ' months ago</span>'); } else if (difference < 63244800) { $(".time_ago").text('<span unix="' + unix + '" class="time_ago">a year ago</span>'); } else (difference >= 63244800) { amount = floor(difference / 31622400); $(".time_ago").text('<span unix="' + unix + '" class="time_ago">' + amount + ' years ago</span>'); } return false; }, 60); EDIT) Ok, now I have made some changes on your advice but it's changing the span texts to 43351 years. Any ideas why it is doing that?

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  • converting a javascript string to a html object

    - by Lina
    Hi everyone, can I convert a string to a html object? like: string s = '<div id="myDiv"></div>'; var htmlObject = s.toHtmlObject; so that i can later on get it by id and do some changing in its style var ho = document.getElementById("myDiv").style.marginTop = something; Thanx a million in advance, Lina

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  • how to capture key repeats with javascript

    - by yamspog
    i have an asp.net form and an asp:textbox. i have a problem when the user presses and HOLDS a key down. the user selects the text box and then presses and holds '9' until the text box fills with 9s. Is there any way to detect this situation? Is there a way to stop key repeats when the key is held down?

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  • Dynamically adding values to a form with JQuery/Javascript

    - by bigstylee
    I am creating a private message system to allow users to communicate between one another within the context of the website (ie, not emails). I have created this function to handle all my form submissions. I would like to achieve a solution without modifying this function (ideally). $("form.reload").submit(function(){ alert($(this).serialize()); /* Debugging */ $.post($(this).attr("action"), $(this).serialize() ,function(data){ if(data){ $("#error").html(data); }else{ location.reload(); }; }); return false; }); Within my form I am using JQuery Autocomplete to find usernames. This function works perfectly. My first solution was to add buttons within the form with the necessary values. select: function(event, ui) { $("#message_to").append("<input type=\"button\" class=\"recipient\" name=\"recipients[]\" value=\"" + ui.item.label + "\" onclick=\"$(this).remove()\" />"); } <form method="post" action="/messages-create"> <div id="message_to"></div> </div> For some reason the values of recipients are not getting posted. My second solution was to add to a post array that already existed in the form select: function(event, ui) { $(input[name=recipeients[]).val = ui.item.label; /* Need to add to array, not replace! */ $("#message_to").append("<input type=\"button\" class=\"recipient\" name=\"recipient\" value=\"" + ui.item.label + "\" onclick=\"$(this).remove(); /* Remove from recipients */\" />"); } <form method="post" action="/messages-create" class="reload"> <input type="hidden" name="recipients[]" value="" /> <div id="message_to"></div> </div> This works ok, but I have been unable to work out how to append to the recipients[] array only replace with the new label. Moving on from this, I also need to know how to then remove this value from the array. Thanks in advance!

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  • JSON is used only for JavaScript?

    - by Bob Smith
    I am storing a JSON string in the database that represents a set of properties. In the code behind, I export it and use it for some custom logic. Essentially, I am using it only as a storage mechanism. I understand XML is better suited for this but I read that JSON is faster and preferred. Is it a good practice to use JSON if the intention is not to use the string on the client side?

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  • JSON find in JavaScript

    - by zapping
    Is there a better way other than looping to find data in JSON? It's for edit and delete. for(var k in objJsonResp) { if (objJsonResp[k].txtId == id) { if (action == 'delete') { objJsonResp.splice(k,1); } else { objJsonResp[k] = newVal; } break; } } The data is arranged as list of maps. Like: [{id:value, pId:value, cId:value,...}, {id:value, pId:value, cId:value}, ...]

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  • What does this javascript do?

    - by Rakesh Juyal
    I was adding recent videos gadget on my blog. In that widget i was supposed to add this line <script src="/feeds/posts/default?orderby=published&alt=json-in-script&callback=showrecentpostswiththumbs"> also, i added another script which was having the method showrecentpostswiththumbs [ used in callback ]. Please let me know what does above syntax do?

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  • My images aren't updating immediately upon changing their src in javascript

    - by Dale
    I'm using the function below to change the img src. It's an array of ten images. When going through the loop, using break points, the images don't all update on the page immediately. Some of them do. If I inspect the unchanged images on the page (while paused at a breakpoint), the src has changed, but the image hasn't changed yet. All of the unchanged images get updated correctly when the function ends. Anyone know why they don't all get updated instantly and how I can force them to update? Also, is there a way I can hold off the updates of all of them until they're all reassigned and thus have them all update on the "simultaneously"? Here's my function. function mainFunction(){ finalSet = calculateSet(); for ( var int = 0; int < finalSet.length; int++) { var fileName = "cardImg" + (int); document.getElementById(fileName).src = "images/cards/" + finalSet[int].name + ".jpg"; } } Thanks for the help. Dale

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  • Javascript scope chain

    - by Geromey
    Hi, I am trying to optimize my program. I think I understand the basics of closure. I am confused about the scope chain though. I know that in general you want a low scope (to access variables quickly). Say I have the following object: var my_object = (function(){ //private variables var a_private = 0; return{ //public //public variables a_public : 1, //public methods some_public : function(){ debugger; alert(this.a_public); alert(a_private); }; }; })(); My understanding is that if I am in the some_public method I can access the private variables faster than the public ones. Is this correct? My confusion comes with the scope level of this. When the code is stopped at debugger, firebug shows the public variable inside the this keyword. The this word is not inside a scope level. How fast is accessing this? Right now I am storing any this.properties as another local variable to avoid accessing it multiple times. Thanks very much!

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  • Single Page Navigation w/ Javascript and Back Button

    - by Khan
    Ok, so I have a "navigation" div and "content" div. When something on the navigation is clicked, I fade in the content div with the new data. Now, I would like to have the old data returned when the user hits the "back" button on his/her browser, but I'm having a hard time doing this. I know I can set the content to be a named anchor, so they stay on the same page with a breadcrumb trail. However, that's as far as I get. Can I listen for a back button click? Can I set content to display when a certain anchor name is reached? Thanks in advance for your help, SO.

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  • Simple javascript problem in ie6 and ie7

    - by Jeff Lamb
    I have a very simple function that takes a list of comma separated (x,y) points and imports them into a graph. I have FF, Chrome and IE8 installed. I use IETester to test for IE6 and IE7. // Import Data this.Import = function(data) { alert("Data in: "+data); var d; // Make sure the first and the last are start/ending parenthesis if ( (data[0] != '(') || (data[data.length-1] != ')') ) { alert("After if: "+data[0]+" "+data[data.length-1]); return false; } ... In Chrome, FF and IE8, I don't see the "After if:" alert. In IE6 and IE7, I see the following two alerts: Data in: (52,16),(100,90) After if: undefined undefined The "Data in" alert matches in all browsers. Any ideas?

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  • javascript variable evaluation in function

    - by lamerzpua
    I trying to use simile widget for own need but I'm stuck on such problem. I have loop for (i=0;i<15;i++){ Timeline.loadXML(function_that_return_url(), function(xml, url) { eventSource[i].loadXML(xml, url); }); } This code is for Timeline.loadXML: Timeline.loadXML = function(url, f) { var fError = function(statusText, status, xmlhttp) { alert("Failed to load data xml from " + url + "\n" + statusText); }; var fDone = function(xmlhttp) { var xml = xmlhttp.responseXML; if (!xml.documentElement && xmlhttp.responseStream) { xml.load(xmlhttp.responseStream); } f(xml, url); }; SimileAjax.XmlHttp.get(url, fError, fDone);}; When I open the page - my function function(xml, url) { eventSource[i].loadXML(xml, url); }); is passed to loadXML method which use it inside as f(xml, url); Problem is that i variable is not parsed as number and I receive message that eventSource[...] is not declared. How I can evaluate i values before it will be posted as argument for the method LoadXML ?

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  • Javascript: prototypal inheritance and the prototype property

    - by JanD
    Hi, I have a simple code fragment in JS working with prototype inheritance. function object(o) { function F() {} F.prototype = o; return new F(); } //the following code block has a alternate version var mammal = { color: "brown", getColor: function() { return this.color; } } var myCat = object(mammal); myCat.meow = function(){return "meow";} that worked fine but adding this: mammal.prototype.kindOf = "predator"; does not. ("mammal.prototype is undefined") Since I guessed that object maybe have no prototype I rewrote it, replacing the var mammal={... block with: function mammal() { this.color = "brown"; this.getColor = function() { return this.color; } } which gave me a bunch of other errors: "Function.prototype.toString called on incompatible object" and if I try to call _myCat.getColor() "myCat.getColor is not a function" Now I am totally confused. After reading Crockford, and Flanagan I did not get the solution for the errors. So it would be great if somebody knows... - why is the prototype undefined in the first example (which is foremost concern; I thought the prototype of explicitly set in the object() function) - why get I these strange errors trying to use the mammal function as prototype object in the object() function? Edit by the Creator of the Question: These two links helped a lot too: Prototypes_in_JavaScript on the spheredev wiki explains the way the prototype property works relativily simple. What it lacks is some try-out code examples. Some good examples are provided by Morris John's Article. I personally find the explanations are not that easy as in the first link, but still very good. The most difficult part even after I actually got it is really not to confuse the .prototype propery with the internal [[Prototype]] of an object.

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  • Javascript: Whitespace Characters being Removed in Chrome (but not Firefox)

    - by Matrym
    Why would the below eliminate the whitespace around matched keyword text when replacing it with an anchor link? Note, this error only occurs in Chrome, and not firefox. For complete context, the file is located at: http://seox.org/lbp/lb-core.js To view the code in action (no errors found yet), the demo page is at http://seox.org/test.html. Copy/Pasting the first paragraph into a rich text editor (ie: dreamweaver, or gmail with rich text editor turned on) will reveal the problem, with words bunched together. Pasting it into a plain text editor will not. // Find page text (not in links) -> doxdesk.com function findPlainTextExceptInLinks(element, substring, callback) { for (var childi= element.childNodes.length; childi-->0;) { var child= element.childNodes[childi]; if (child.nodeType===1) { if (child.tagName.toLowerCase()!=='a') findPlainTextExceptInLinks(child, substring, callback); } else if (child.nodeType===3) { var index= child.data.length; while (true) { index= child.data.lastIndexOf(substring, index); if (index===-1 || limit.indexOf(substring.toLowerCase()) !== -1) break; // don't match an alphanumeric char var dontMatch =/\w/; if(child.nodeValue.charAt(index - 1).match(dontMatch) || child.nodeValue.charAt(index+keyword.length).match(dontMatch)) break; // alert(child.nodeValue.charAt(index+keyword.length + 1)); callback.call(window, child, index) } } } } // Linkup function, call with various type cases (below) function linkup(node, index) { node.splitText(index+keyword.length); var a= document.createElement('a'); a.href= linkUrl; a.appendChild(node.splitText(index)); node.parentNode.insertBefore(a, node.nextSibling); limit.push(keyword.toLowerCase()); // Add the keyword to memory urlMemory.push(linkUrl); // Add the url to memory } // lower case (already applied) findPlainTextExceptInLinks(lbp.vrs.holder, keyword, linkup); Thanks in advance for your help. I'm nearly ready to launch the script, and will gladly comment in kudos to you for your assistance.

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  • Javascript if (j === null) do nothing.

    - by Kyle Sevenoaks
    Hi, I'm using CurvyCorners to make my corners curvy in IE, only thing is that when it reads the CSS it takes all the webkit properties and shows me an alert curvyCorners.alert("No object with ID " + arg + " exists yet.\nCall curvyCorners(settings, obj) when it is created.");. How can I just set this if statement to do nothing? if (j === null) do nothing(); //but in real script Thanks :)

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