JavaScript - Finding Specific Html And Replacing It
I'm a bit of a Javascript noob, so please bear with me!
I'm trying to create a piece of code that will check a webpage and replace any instances of a specific line of HTML with another line of HTML. The code I have so far doesn't work, but I have a feeling that's down to my awful Javascript skills! For example, in the following code I'd want to replace all instances of <li><a href="index.pdf">Index</a></li> with <li><a href="contents.pdf">Contents</a></li> Code: <div id="downloads"> <p>Please click on your downloads below:</p> <ul> <li><a href="index.pdf">Index</a></li> <li><a href="chapter1.pdf">Chapter 1</a></li> <li><a href="chapter2.pdf">Chapter 2</a></li> <li><a href="chapter3.pdf">Chapter 3</a></li> <li><a href="credits.pdf">Credits</a></li> </ul> </div> The Javascript I have so far is: Code: <script type="text/javascript"> var aEls = document.getElementsByTagName('a'); for (var i = 0, aEl; aEl = aEls[i]; i++) { aEl.href = aEl.href.replace('index.pdf','contents.pdf'); } Obviously this is meant to just replaces the a href elements, but I got a bit stuck after this! Any pointers would be much appriciated. Similar TutorialsHi. I have the following line in my HTML file <table class="bz_buglist" cellspacing="0" cellpadding="4" width="100%"> And I need to use javascript to change this line to <table id="main_table" class="bz_buglist" cellspacing="0" cellpadding="4" width="100%"> . I just need to add the ID part. How can I do this? Is there a method of replacing the line, or a way to "add attribute"? thanks! kev. Basically what I need to do is cause a bit of HTML to only display on a specific page. I have figured out how to do most of the work i.e. figuring out what page that the code is being displayed on, etc. However, for some reason the DOM element that I am using will not update based on the Javascript. I have searched the Internet for a solution and unfortunately I have found none. Here is the version of the code that I am currently working on: Code: <html> <head> <script type="text/javascript"> window.onload = function DisplayButton() { var DesiredPage = 'Page to Display'; //Page that I want the code to display on var sPath = window.location.pathname; var sPage = sPath.substring(sPath.lastIndexOf('/') + 1); //This determines and places in a variable what page that the code will be on if (sPage == DesiredPage) { document.getElementById('HiddenCode').style.display = "block"; } } </script> <p Id="HiddenCode" style="display:none">Code only to be displayed on indicated page</p> </head> </html> I am somewhat new to Javascript so I feel like I might be missing something obvious here. Thank You to anyone who can help. Zbot Well after much trial and error I come asking for help. I am trying to write a greasemonkey script that scans a page for all the values between certain <td> tags. When I used firebug it shows what I am looking for as <td class="username">THEUSERNAME</td> but when I view the source it just shows up as <td>THEUSERNAME</td> I want to create an array of the 100 <td>'s on the page that pertain to usernames but none of the other <td>'s I created a test page that mimicked the code, what I thought origionally, to be so I could test my script with ease. And it worked when there was an actually <td class="username"> This is what I have so far: Code: // ==UserScript== // //Displayable Name of your script // @name EXAMPLE // // brief description // @description EXAMPLE // //URI (preferably your own site, so browser can avert naming collisions // @namespace http://something.com // // Your name, userscript userid link (optional) // @author ME // //Version Number // @version 1.0 // // Urls process this user script on // @include http://example.com // ==/UserScript== var test = document.getElementsByClassName('username'); alert(test.length); test[5].style.color="yellow"; //Just to see if it actually worked How do I replace the string "rpg" only present in between <et> tags ? Code: <et>ReplaceOnlyrpg</et> After replacement it should look like this Code: <et>ReplaceOnly</et> Any advice is appreciated. Thank you Another thing that has been driving me crazy is that css positioning is handled differently by different browsers. JS is not my area, but I can do a lot with CSS, and I do, but cross browser compatibility is killing me. I can use an IF IE statement and only IE runs that segment of code, but I haven't been able to figure out out how to make ONLY firefox or ONLY opera or safari enact an encapsulated segment of code. The same type of IF statement doesn't work for them. Is there a single method using JS that works for all browsers? Thre is probably a very simple answer and I am just missing it somehow. hi, I am curious about the use of appendChild() here... I have a solution that does what I want it to do, like this: Code: var sidebarEntry = createSidebarEntry(poly, html); sidebar.appendChild(sidebarEntry); sidebar.replaceChild((sidebarEntry),sidebar.firstChild); but it seems to be going the long way around. Not that it matters much (I guess), but all I want to do is to add an item to the sidebar and when a new item is added, remove the existing one. I tried just using relaceChild() on its own, but the code seems to need something to be replace... Is the above the best way to do it? Or is it possible to set the child to some dummy position like null to begin with, so that the code is not constantly reloading and replacing items (which is what I understand is going on now)? here's the page I'm working on, if you want to see the rest of the code. I appreciate any thoughts. Is it possible, when a page is reloaded, to replace a link to a javascript in the head with a link to a different script?
Hey guys... Basically I need a function that will remove numerous elements from a page based on their class. I then also need a function to bring those elements back afterwards. If anyone is wondering, I'm trying to add buttons to remove/add images. Thanks! I have the following code that works fine: Code 1 Code: <script type="text/javascript"> AJS.AEV(window, 'load', function() { GB_show("Special Presentation", "http://www.site.net/temp/images/ads/special.jpg", 352, 600); }); </script> I also have the following code that works fine: Code 2 Code: function DoTheCookieStuff() { visited=getCookie('visited'); if (visited==null) { setCookie('visited','yes',365) MyWindow=window.open('http://www.site.com','MyWindow','toolbar=yes,location=yes,directories=no,status=yes,menubar=yes,scrollbars=yes,resizable=yes,width=640,height=480,left=1,top=1'); } } However, I want to replace the blue code in the Code 2 immediately above that opens the window with the red code in the Code 1 section that opens the GreyBox window. I tried the following but it's just not working: Code: function DoTheCookieStuff() { visited=getCookie('visited'); if (visited==null) { setCookie('visited','yes',365) AJS.AEV(window, 'load', function() { GB_show("Special Presentation", "http://www.site.net/temp/images/ads/special.jpg", 352, 600); }); } } Thank you. I'm sorry this is simple, but: Code: function printInput(f){ var ifr = window.frames['printFrame']; var v1=readCookie('lesson'); if (v1==1){v2='WORKNOTEPAD1'} if (v1==2){v2='WORKNOTEPAD2'} if (ifr){ ifr.document.getElementById('content').innerHTML=f. v2 .value.replace(/\n/g,'<br />'); ifr.focus(); ifr.print(); } else { something } } In this line: Code: ifr.document.getElementById('content').innerHTML=f. v2 .value.replace(/\n/g,'<br />'); How can I make it stop erroring and act as if the "v2" were, say, "WORKNOTEPAD2"? If the line contains the string it all works fine. It must be so simple... Hi, I know how to replace all the + signs in a url string by spaces, like this: newstring=oldstring.replace(/[+]/g," "); but how do I replace a substring by a comma easily? This doesn't do it: newstring=oldstring.replace(/[&menuitems]/,","); Thanks in advance for any help. Hi, I am quite new to JS and is currently building a website with a little of JS Function. Ok, so I have a Page tat consists of 10 images. Each images when on mouse over, will display a larger version on the images, using JS(onmouseover). Then, I will have a next button that will replace all the images, using Ajax, which means my page will not be reloaded. The problem comes here when I have to replace all the onmouseover effect. I can replace all the thumbnails without problem, but the onmouseover I have problem replacing. Is there anyway that I can dynamically replace all the onmouseover? Any help will be appreciated. Thanks I have 16 links on a page, when each link is clicked, I need to change text that is on the page. This is Page 1 link 1 This Is Page 1 link 2 This is Page 2 ... link 16 This is Page 16 How can I do this? Excuse my ignorance, this is my first JS project Ok, i have a javascript that creates a table then appends it to an empty div. This works fine in FF, however it fails to work in IE8. [edit] I have decided to post the entire code since I wasn't having any luck getting any suggestions. Maybe now someone can help me out. Code: function createTable() { var machine = document.Catalog.machine.value; var dSearch = document.Catalog.dSearch.value; var section = document.Catalog.section.value; var x = xmlDoc.getElementsByTagName('record'); var y = xmlDoc.getElementsByTagName('data'); var newEl = document.createElement('TABLE'); newEl.className = 'resultsTab'; var tmp = document.createElement('TBODY'); newEl.appendChild(tmp); var row = document.createElement('TR'); var n = 1; var headings = new Array("Col1", "Col2", "Col3", "Col4", "Col5"); var dcount = 0; //for (t=0;t<10;t++) { for (t=0;t<y[0].childNodes.length;t++) { if (y[0].childNodes[t].tagName == "record") { // it is required for FF to work properly dcount++; } } if (document.Catalog.thumbImg[0].checked) { var container = document.createElement('TH'); var theData = document.createTextNode("Pic"); container.className = "topline1"; container.appendChild(theData); row.appendChild(container); } for (h=0;h<headings.length;h++) { var container = document.createElement('TH'); var theData = document.createTextNode(headings[h]); container.className = 'topline' + n; container.appendChild(theData); row.appendChild(container); n++; } tmp.appendChild(row); switch (searchtype) { case 1: var objRegex = new RegExp(machine); break; case 2: var objRegex = new RegExp(section, "i"); break; case 3: var objRegex = new RegExp(dSearch, "i"); break; default: document.getElementById("replaceTxt").innerHTML = "<p>There was an error processing your request.</p>"; } var rowColor = 1; var noResult = "false"; for (i=0;i<dcount;i++) { var row = document.createElement('TR'); var searcharr = new Array(); for (j=0;j<x[i].childNodes.length;j++) { if (x[i].childNodes[j].nodeType != 1) continue; searcharr.push(x[i].childNodes[j].firstChild.nodeValue); } var searchstrg = searcharr.toString(); if (searchstrg.match(objRegex)) { var t; var m=1; if (document.Catalog.thumbImg[0].checked) { var pn = "images/"+searcharr[2]+".jpg"; var container = document.createElement('TD'); var refLink = document.createElement("A"); refLink.setAttribute('href', "javascript:viewImg(\""+pn+"\")"); var imgHolder = document.createElement("IMG"); imgHolder.setAttribute("src", pn); imgHolder.style.height = "75px"; refLink.appendChild(imgHolder); container.appendChild(refLink); container.className = "img"+rowColor; row.appendChild(container); } for (t=0; t<searcharr.length; t++) { container = document.createElement('TD'); var theData = document.createTextNode(searcharr[t]); container.appendChild(theData); container.className = 'line' + rowColor + '_' + m; row.appendChild(container); m++; } tmp.appendChild(row); rowColor == 1 ? rowColor++ : rowColor--; document.getElementById("replaceTxt").innerHTML = ""; document.getElementById("replaceTxt").appendChild(newEl); noResult = "true"; } } if (noResult=="false") { document.getElementById("replaceTxt").innerHTML = "<h3>Sorry, there was no match to your search. Please try again</h3>"; } } xmlDoc is the xml object from my import xml function. it is working correctly. IE does not give any JS errors, it just does nothing. If I put text in the Code: document.getElementById("replaceTxt").innerHTML field, IE displays the text in the correct spot so I know the code is working. I also verified the data is being written correctly to "newEl" via IE 8 debugger. IE just does not want to append the newEl child to the <div> tag. This is where I assume the problem is. Hi Guys/Gals I am trying to do a small website for our family to keep track of each other's home address and etc.. using asp for the codes .. (its been ages since i indulge myself) i have 2 forms in which in FormA, i will key in the following address 666, ST Avenue #03-09 Anchor View Residence 123456 when i click on submit it shows this on FormB 666, ST Avenue #03-09 Anchor View Residence 123456 my question is how do i get it to be shown as 666, ST Avenue #03-09 Anchor View Residence 123456 in FormB in my formB.asp, for the particular code, all i wrote was Code: {Form.address} I am in need of advise, have been stuck here for the past 1 day, not knwing wat to start or how to start. Thank you Hey folks. I currently have a PTZ camera that is taking screenshots every minute (or so) and sending a copy of that image (overwriting the previous one) to my website. Basically, the visitors to the website will be greeted with a live screenshot. The problem is if the visitor hits the website at just the right time, the screenshot won't be loaded completely while the 2nd most screenshot is being overwritten... creating an empty image load (the dreaded red X). What I am looking to do with Javascript is to be able to load a generic image in the scenario in which no image loads. Is that possible? I tried doing something like the following and onload-ing it, but it wouldn't work. Any help would be appreciated. Thanks! Code: <script type="text/javascript"> <!-- function replaceSrc() { var images = document.getElementsByTagName('img'); for(var i = 0; i < images.length; i++) { var img = images[i]; if(img.src.length == 0) { img.src = 'images/garbage.gif'; } } } --> </script> Code: var bakaBanner; bakaBanner = document.getElementById('head'); if (bakaBanner) { var str=/\/images\/banners\/[A-Za-z0-9_]+.[a-z]+/; document.write(str.replace(/\/images\/banners\/[A-Za-z0-9_]+.[a-z]+/, "http://img218.imageshack.us/img218/5904/revyblacklagoon1.png")); } Alright, here's the deal... This is a script to be used in Greasemonkey. The page this is for changes their banner every 5 minutes, the name changes and it could be either jpg or png. I'm fairly certain my regex itself: \/images\/banners\/[A-Za-z0-9_]+.[a-z]+ Is correct... Here's an example of what it's looking through: Code: <div id="head" style="background-image: url(/images/banners/kiminitodoke.jpg);" > <div id="header_left"> <div id="rss"> My guess is that it has something to do with this line: document.write(str.replace(/\/images\/banners\/[A-Za-z0-9_]+.[a-z]+/, "http://img218.imageshack.us/img218/5904/revyblacklagoon1.png")); I'm new with Javascript, so I don't really understand why it's not working... :/ Hi there I have this problem where there is something wrong with the variable scope, but I cannot find it, the first problem I have is that the program doesn't work, and the second is the error with the variable scope. Please can you help me fix it. Code: var count = 0; function gimmeRandom() { var rand = Math.floor(Math.random()*10)+1; count++; } function countToRandom() { for (count = 1; count <= rand; count++) { console.log(count); } } console.log("Counting to a random number"); gimmeRandom(); countToRandom(); console.log("Counting to another random number"); gimmeRandom(); countToRandom(); console.log("There has been "+count+" random numbers"); Reply With Quote 01-13-2015, 10:34 PM #2 Old Pedant View Profile View Forum Posts Supreme Master coder! Join Date Feb 2009 Posts 28,311 Thanks 82 Thanked 4,754 Times in 4,716 Posts Any variable declared (using the var keyword) *inside* a function is ONLY visible inside that function. So your rand variable can NOT be seen, at all, in your countToRandom( ) function. Can anyone direct me to the source of this carousel or something similar? http://www.murdockyoung.com/projects...-house/images/ Thanks in advance! |