I am making a chrome extension which displays glassdoor ratings next to job listings for my university job board.
Everything runs fine when you first load up the page, however the search function of the site (if you try to search/filter out the job list) reloads an inner frame instead of the entire page. When this happens, my content script does not seem to be re-injecting itself into the new elements that are loaded.
This is the content script that I am sending into the page:
var classNames = document.getElementsByClassName("list-item-title");
var i;
for (i = 0; i < classNames.length; i++) {
classNames[i].style.fontWeight = 'bold';
}
var i;
var xhr;
var obj;
var employerNames = document.getElementsByClassName("list-item-body");
document.getElementsByClassName("lst-head-l")[0].insertAdjacentHTML('afterend', "<a href='https://www.glassdoor.com/index.htm'><img src='https://www.glassdoor.com/static/img/api/glassdoor_logo_80.png' title='Ratings Provided by Glassdoor' /></a>");
var apiURL = "https://api.glassdoor.com/api/api.htm?t.p=51863&t.k=kPRnCOceJPO&userip=0.0.0.0&useragent=&format=json&v=1&action=employers&q=";
for (i = 0; i < employerNames.length; i++) {
var xhr = new XMLHttpRequest();
xhr. open("GET", apiURL + employerNames[i].children[2].children[0].innerHTML, false);
xhr.send();
var obj = JSON.parse(xhr.responseText);
if (obj.response.totalRecordCount != 0) {
var child = employerNames[i].children[2].children[0];
var rawRating = obj.response.employers[0].overallRating;
var rating = Math.round(rawRating);
var link = "http://www.glassdoor.com/api/api.htm?version=1&action=employer-overview&t.s=w-m&t.a=c&employerId=" + obj.response.employers[0].id;
var text = "<a href=\"" + link + "\"> <b style=\"color: #7cb228; font-size: 120%;\" title=\" " + rawRating + " \">";
for (var k = 0; k < rating; k++) {
text += "★";
}
for (var k = 0; k < (5 - rating); k++) {
text += "☆";
}
text += "</b>";
child.insertAdjacentHTML('afterend', text);
// employerNames[i].children[2].innerHTML += " <b style=\"color: black\">(" + obj.response.employers[0].overallRating + ") ★ </b>";
}
}
I hope the above makes sense, does anyone have any suggestions?
Related
I'm Building a widget for blogger
<script type="text/javascript">
function mycallback(json) {
for (var i = 0; i < json.feed.entry.length; i++) {
for (var j = 0; j < json.feed.entry[i].link.length; j++) {
if (json.feed.entry[i].link[j].rel == 'alternate') {
var postUrl = json.feed.entry[i].link[j].href;
break;
}
}
var postTitle = json.feed.entry[i].title.$t;
var postSummary = json.feed.entry[i].summary.$t;
var Thumb = json.feed.entry[i].media$thumbnail.url;
var item = '<div class="wrapper"><img src='+ Thumb +' /><h3><a href=' + postUrl + '>' + postTitle + '</h3></a><p>' + postSummary + '</p></div>';
document.write(item);
}
}
</script>
<script src="https://smag-soratemplates.blogspot.com/feeds/posts/summary?max-results=5&alt=json-in-script&callback=mycallback"></script>
but if there is no image in the post or cant find .media$thumbnail.url
the widget stops working , anyone know how to fix that ? or to show an alternative image?
sorry i'm a beginner
If it's failing when the thumbnail does not exist, then you can put a check for the thumbnail
<script type="text/javascript">
function mycallback(json) {
for (var i = 0; i < json.feed.entry.length; i++) {
for (var j = 0; j < json.feed.entry[i].link.length; j++) {
if (json.feed.entry[i].link[j].rel == 'alternate') {
var postUrl = json.feed.entry[i].link[j].href;
break;
}
}
var postTitle = json.feed.entry[i].title.$t;
var postSummary = json.feed.entry[i].summary.$t;
var Thumb = json.feed.entry[i].media$thumbnail.url;
if( typeof Thumb == "undefined" ) {
Thumb = '/Your custom image url';
}
var item = '<div class="wrapper"><img src='+ Thumb +' /><h3><a href=' + postUrl + '>' + postTitle + '</h3></a><p>' + postSummary + '</p></div>';
document.write(item);
}
}
</script>
<script src="https://smag-soratemplates.blogspot.com/feeds/posts/summary?max-results=5&alt=json-in-script&callback=mycallback"></script>
You need to use or(||) in the Thumb definition like that
var Thumb = json.feed.entry[i].media$thumbnail.url || 'https://i.imgur.com/5WMAvAu.gif';
Here, if json.feed.entry[i].media$thumbnail.url is undefine/false/null, Thumb is set to 'https://i.imgur.com/5WMAvAu.gif' as your default image.
You need to check that all of the values are present:
json.feed.entry[i].media$thumbnail.url
as any of these items could be null / undefined:
json
json.feed
json.feed.entry[i]
json.feed.entry[i].media$thumbnail
json.feed.entry[i].media$thumbnail.url
At the least, you should check:
if(json.feed.entry[i].media$thumbnail && json.feed.entry[i].media$thumbnail.url)
Also, it's probably worth rewriting this code as follows:
let entry = json.feed.entry[i];
to save yourself some typing (and to stop all the object look ups each time when using dots to reference nested objects).
The code then becomes:
let url = '';
if (entry.media$thumbnail && media$thumbnail.url) {
url = entry.media$thumbnail.url;
}
else {
url = 'the default image URL';
}
Thank you all i found the solution
by replacing this code
var Thumb = json.feed.entry[i].media$thumbnail.url;
with this code
if (json.feed.entry[i].media$thumbnail)
{
Thumb = json.feed.entry[i].media$thumbnail.url;
}
else
{
Thumb= "'Image url'";
}
I rebuild a table (tbody) from the local storage. When it is necessary, I rebuild the <a> tag to get a link to an image. Contrary to what happen normally, when returning from the linked document or image to the calling document containing the rebuilt table, the cursor position nor the scrollbar position is retained, and the table is re-positioned at the beginning (row 0, col 0). I would like that the user would not have to scroll again to find it starting position (with the link) in the table.
The problem is simple to explain and I already did it. By clicking to expand a small view of a table in order to get a full view of it on a new page, I have to dynamically rebuild this table from information in the localstorage: firstly call the function storeLocOeuvresTbl() in the origin page; secondly, the function getInventOeuvresTblFromStoreLoc() in the destination page. This can be done by clicking on the link according to the code here : Le contenu de cette table peut être trié en cliquant sur les entêtes de colonnes.
Veuillez suivre ce lien
Expand
pour agrandir la table sur une page séparée..
If I follow a link from a cell in the built table in the destination page and return to this page from any other document/page accessed through this link, the cursor and scrollbar positions are lost. I suppose having to specify some property/attribute.
Which property/attribute do I have to specify for a dynamically built table so that the table from which I followed the link, does not move to the initial pos (0,0) when I return from this link. If I have to specify a property to keep the position, at which level? Div, table contained in the div, tbody?
Whit a dynamically built table, the normal behavior is perturbed.
Here is a link to a test page simplifying this problem:
http://www.danielpisters.be/testTable.html
Click bellow the table and you get a full view of the table in
http://www.danielpisters.be/testExpandTestTable.html
Move right to the column header "tLink" (all the others are "Foo", "Bar"). Then move down in the column until you reach a cell with a link. Click on it and you will see an image on another page. Returning from it, the position on the cell containing the link is lost, becoming 0,0.
// Build the table from the origin document
<script type="text/javascript">
function storeLocOeuvresTbl()
{
var oTable = document.getElementById('myOeuvresTable');
var s = "";
var stopAlert = true;
if (oTable == null) // TJC: Invalid ID, ignore it
{
alert("myOeuvresTable not found!");
return "";
}
var versIE = isIE();
var aTBODY = oTable.getElementsByTagName("tbody");
localStorage.setItem("myOeuvresTableTBlen", aTBODY.length);
// set the CSS class for each one of the TR tags
for (var i = 0; i < aTBODY.length; i++)
{
// get an array of all the TR tags in the TBODY
// TJC: It's actually a NodeList, but you can largely
// treat it as an array
var aTR = aTBODY[i].getElementsByTagName("tr");
localStorage.setItem("myOeuvresTableTB" + i + "len", aTR.length);
for (var j = 0; j < aTR.length; j++)
{
var aTD = aTR[j].getElementsByTagName("td");
localStorage.setItem("myOeuvresTableTB" + i + "TR" + j + "len", aTD.length);
var aTDlen = parseInt(localStorage.getItem("myOeuvresTableTB" + i + "TR" + j + "len"));
for (var k = 0; k < aTD.length; k++)
{
s = s + aTD[k].id + ": " + aTD[k].innerHTML + "|";
var tdId = "myOeuvresTableTB" + i + "TR" + j + "TD" + k;
var innerHTML = "";
if (aTD[k].innerHTML.length > 0)
{
innerHTML = aTD[k].innerHTML;
}
else
{
innerHTML = " ";
}
localStorage.setItem(tdId, innerHTML);
innerHTML = localStorage.getItem(tdId);
if (stopAlert == false && (versIE != false) && (versIE < 9))
{
alert("innerHTML get: " + innerHTML);
if (window.confirm("Stop Alert?"))
{
stopAlert = true;
}
}
}
s = s + "\n";
}
}
return s;
}
// Rebuild onLoad of the destination document
<script type="text/javascript">
function getInventOeuvresTblFromStoreLoc()
{
var tbl = document.getElementById('myOeuvresTable');
var s = "";
var tdId = "";
var innerHTML = "";
var aTBODYlen = 0;
var aTRlen = 0;
var aTDlen = 0;
var stopAlert = true;
var arrEvent = new Array("onMouseOver", "onMouseOut", "onClick", "onDbleClick", "onMouseUp", "onMouseDown", "onFocus", "onBlur");
var DATE_RE = /^(\d\d?)[\/\.-](\d\d?)[\/\.-]((\d\d)?\d\d)$/;
if (tbl == null) // TJC: Invalid ID, ignore it
{
alert("myOeuvresTable not found!");
return "";
}
var versIE = isIE();
aTBODYlen = parseInt(localStorage.getItem("myOeuvresTableTBlen"));
// set the CSS class for each one of the TR tags
for (var i = 0; i < aTBODYlen; i++)
{
// get an array of all the TR tags in the TBODY
// TJC: It's actually a NodeList, but you can largely
// treat it as an array
var tblBody = tbl.tBodies.item(i);
aTRlen = parseInt(localStorage.getItem("myOeuvresTableTB" + i + "len"));
for (var j = 0; j < aTRlen; j++)
{
var row = document.createElement("tr");
aTDlen = parseInt(localStorage.getItem("myOeuvresTableTB" + i + "TR" + j + "len"));
for (var k = 0; k < aTDlen; k++)
{
var cell = document.createElement("td");
tdId = "myOeuvresTableTB" + i + "TR" + j + "TD" + k;
innerHTML = localStorage.getItem(tdId);
if (innerHTML.substr(0, 7).toLowerCase() == "<a href")
{
var link = document.createElement("a");
var indDblQuote1 = innerHTML.indexOf('"');
var indDblQuote2 = innerHTML.indexOf('"', indDblQuote1 + 1);
var indOf1 = innerHTML.indexOf(">");
var indOf2 = innerHTML.toLowerCase().indexOf("</a>");
var cellLink = innerHTML.substring(indDblQuote1 + 1, indDblQuote2);
var cellText = innerHTML.substring(indOf1 + 1, indOf2);
if (stopAlert == false && (versIE != false) && (versIE < 9))
{
var s = "innetHTML: " + innerHTML + "; " + "cellLink: " + cellLink + "; " + "cellText: " + cellText;
alert(s);
if (window.confirm("Stop Alert?"))
{
stopAlert = true;
}
}
link.setAttribute('href', cellLink);
link.appendChild(document.createTextNode(cellText));
cell.appendChild(link);
}
else
{
var cellText = document.createTextNode(innerHTML);
cell.appendChild(cellText);
}
row.appendChild(cell);
s = s + tdId + ": " + innerHTML + "|";
}
tblBody.appendChild(row);
s = s + "\n";
}
tbl.appendChild(tblBody);
}
return s;
}
</script>
I am trying following code to display the tabs and tab content from Json data dynamically
<script>
var area, cus, project, curst;
$.ajax({
type: "POST",
url: "./QuizServlet",
success: function(responseText) {
console.log("rs" + responseText.toString());
var jsonData = JSON.parse(responseText);
var questions = new Array();
for (var i = 0; i < jsonData.length; i++) {
area = jsonData[i].area;
console.log("area" + area);
project = jsonData[i].projectName;
console.log("poj" + project);
projectdes = jsonData[i].projectDescription;
console.log("pojdes" + projectdes);
curst = jsonData[i].currentStatus;
console.log("cus" + curst);
var test = {
area: area,
cus: curst,
project: project,
projectdes: projectdes,
}
questions.push(test);
console.log("output" + test);
alert(JSON.stringify(test));
}
}
});
for (var i in test) {
$('.nav-tabs').append('<li role="area" class="">' + i + '</li>');
var div = '<div role="tabpanel" class="tab-pane" area="' + i + '">';
for (var j = 0; j < data[i].length; j++) {
var obj = data[i][j];
div += '<div area="' + obj.project + '">' + obj.projectdes + '</div>';
}
$('.tab-content').append(div);
}
$('.nav-tabs li').eq(0).addClass('active');
$('.tab-content div').eq(0).addClass('active');
</script>
<body>
<div class="container">
<ul class="nav nav-tabs" role="tablist"></ul>
<div class="tab-content"></div>
</div>
</body>
My Json data is coming correctly in JSON format from DB: Below data is coming fine from DB . I printed using alert statement
{"area":"CSE","cus":"progress","project":"Project 1","projectdes":"Class 1st"}
{"area":"ECE","cus":"complered","project":"Project 2","projectdes":"This is class 1st Project"}
{"area":"IT","cus":"progress","project":"project 1","projectdes":"This is Class 2nd project"}
{"area":"IT","cus":"pending","project":"Project 2","projectdes":"This is class 2nd project"}
I am trying to display area in tabs and other fields in tab content.But
the data is not getting displayed in jsp. I tried so many ways.But still data is not getting in tabs and tabs content. Please let me know where I am going wrong.
I updated the answer, you can replace the part of your <script> tag by the code below. And to make the UI feel better, modify the HTML and DOM part as per the UI frameworks like bootstrap, etc.
<script>
$.ajax({
type: "POST",
url: "./QuizServlet",
success: function (responseText) {
var jsonData = JSON.parse(responseText);
var uniueTabs = getUniqueLists(jsonData);
for (var i = 0; i < uniueTabs.length; i++) {
$('.nav-tabs').append('<li role="area" class="my-li' + i + '"><a href="#' + i +
'" aria-controls="' + i + '" role="tab" data-toggle="tab">' + uniueTabs[i].area +
'</a></li>');
var div = '<div role="tabpanel" class="tab-pane" area="' + i + '">';
for (var j = 0; j < uniueTabs[i].tabContent.length; j++) {
var obj = uniueTabs[i].tabContent[j];
div += '<div area="' + obj.project + '">' + obj.projectdes + '</div>';
}
$('.my-li' + i).append(div);
}
$('.nav-tabs li').eq(0).addClass('active');
$('.tab-content div').eq(0).addClass('active');
}
});
function getUniqueLists(responseText) {
var resArr = [];
responseText.filter(function (x, i) {
if (resArr.indexOf(x.area) === -1) {
resArr.push(x.area);
}
})
//console.log(resArr);
return mergeDataAreaWise(resArr, responseText);
}
function mergeDataAreaWise(area, responseText) {
var tabList = [];
for (var i = 0; i < area.length; i++) {
tabList.push({
area: area[i],
tabContent: []
});
}
for (var i = 0; i < tabList.length; i++) {
for (var j = 0; j < responseText.length; j++) {
var Obj = {
cus: responseText[j].cus,
project: responseText[j].project,
projectdes: responseText[j].projectdes
}
var currentArea = responseText[j].area;
if (tabList[i].area === currentArea) {
tabList[i].tabContent.push(Obj);
}
}
}
console.log(tabList);
return tabList;
}
</script>
Here is a similar plunkr example
I recently started learning html/javascript and I want a temporary object to be filled with one of the objects from an array based on the current page number.
loadnextpage();
function loadnextpage() {
var curpage = allcontent[pagenumber];
pagenumber++;
changeDiv('title', '<span>' + curpage.pageNumber + '</span>' + curpage.title);
}
But when I try to run the code it keeps giving me an error message that curpage is undefined, after that it keeps running and thus the last line of code gives an error, when I ask for curpage.pageNumber. After that it stops running the code.
image clipping of my code with error message
What am I doing wrong?
edit:
here is the entire code:
var pagenumber = 0;
var receipt = [];
var price = 0;
var text = '{"page": [{"pageNumber": "1","title": "kies je formaat","optionName": "size","option": [{"text": "klein","value": "small","extraPrice": "100"},{"text": "middel","value": "medium","extraPrice": "200"},{"text": "groot","value": "large","extraPrice": "300"}]},{"pageNumber": "2","title": "kies je kleur","optionName": "colour","option": [{"text": "rood","value": "red","extraPrice": "10"},{"text": "groen","value": "green","extraPrice": "20"},{"text": "blauw","value": "blue","extraPrice": "30"}]}]}';
var allcontent = [];
allcontent = JSON.parse(text);
var imgpath = 'img/';
loadnextpage();
function loadnextpage(){
var curpage = allcontent[pagenumber];
pagenumber++;
changeDiv('title', '<span>' + curpage.pageNumber + '</span>' +
curpage.title);
var radiobuttons = '';
var radiobuttonid = [];
for(var i = 0; i < curpage.option.length; i++) {
var curradio = curpage.option[i];
radiobuttons += '<label><div class="selection-wrap">';
radiobuttons += curradio.text;
radiobuttons += ' <input type="radio" name="';
radiobuttons += curpage.optoinName;
radiobuttons += '" value="';
radiobuttons += curradio.value;
radiobuttons += '" id="';
radiobuttons += curpage.optoinName;
radiobuttons += '_';
radiobuttons += curradio.value;
radiobuttons += '"></div></label></br>';
radiobuttonid.push(curpage.optoinName + '_' + curradio.value)
}
changeDiv('choices', radiobuttons);
for(var i = 0; i < radiobuttonid.length; i++){
document.getElementById(radiobuttonid[i]).onclick = function(){
receipt[pagenumber-1] = curpage.option[i];
for(var i = 0; i < receipt.length; i++){
price += receipt[i].extraPrice;
}
changeImg('previewimg', imgpath + curpage.option[i].value +
'/preview.jpg');
changeDiv('previewprice', '<h1>€' + price + ',-</h1>');
};
}
};
function changeDiv(id, content) {
document.getElementById(id).innerHTML = content;
};
function changeImg(id, img){
document.getElementById(id).src = img;
};
Please help, I can't implement this javascript to my Blogger...
(function() {
var pre = document.getElementsByTagName('pre'),
pl = pre.length;
for (var i = 0; i < pl; i++) {
pre[i].innerHTML = '<span class="line-number"></span>' + pre[i].innerHTML + '<span class="cl"></span>';
var num = pre[i].innerHTML.split(/\n/).length;
for (var j = 0; j < num; j++) {
var line_num = pre[i].getElementsByTagName('span')[0];
line_num.innerHTML += '<span>' + (j + 1) + '</span>';
}
}
})();
You can see this Javascript work fine here : http://jsfiddle.net/tovic/AbpRD/1/
If you are seeing that following type of error when you try to add this JavaScript snippet in your theme code -
Error parsing XML: The content of elements must consist of well-formed character data or markup.
Then to resolve this error, use any of the following methods -
1. Wrap the code within a CDATA directive in the script tag. The code will look like -
<script>
//<![CDATA[
(function() {
var pre = document.getElementsByTagName('pre'),
pl = pre.length;
for (var i = 0; i < pl; i++) {
pre[i].innerHTML = '<span class="line-number"></span>' + pre[i].innerHTML + '<span class="cl"></span>';
var num = pre[i].innerHTML.split(/\n/).length;
for (var j = 0; j < num; j++) {
var line_num = pre[i].getElementsByTagName('span')[0];
line_num.innerHTML += '<span>' + (j + 1) + '</span>';
}
}
})();
//]]>
</script>
The only downside of this approach being that Blogger XML parser will ignore any data layout tags (like for example <data:blog.homepageUrl/>) within the CDATA directive. Rather than replacing them with their actual values, it will not interpret them and show them as is.
2. Escape the following characters in your code -
" is replaced with "
& is replaced with &
< is replaced with <
> is replaced with >
After escaping, the code should look like -
<script>
(function() {
var pre = document.getElementsByTagName('pre'),
pl = pre.length;
for (var i = 0; i & lt; pl; i++) {
pre[i].innerHTML = '<span class="line-number"></span>' + pre[i].innerHTML + '<span class="cl"></span>';
var num = pre[i].innerHTML.split(/\n/).length;
for (var j = 0; j & lt; num; j++) {
var line_num = pre[i].getElementsByTagName('span')[0];
line_num.innerHTML += '<span>' + (j + 1) + '</span>';
}
}
})();
</script>
The data layout tags will remain functional when following this method. Remember to not escape <> surrounding the data layout tag (aka <data:blog.homepageUrl/> will work but not <data:blog.homepageUrl/>)
3. If no data layout tags have to be included in the JavaScript. Then you can add it in an HTML/JavaScript gadget via the Layout tab instead of directly including it in the theme code.