Develop Reference

Error in reading text from textarea in Javascript

In a webpage there is a textarea (id="text") and also a button (id="dlButton3").
What I have to do is to enter the text into the textarea. And when I press the button, then the following will be happened:
Text in the text area will be loaded into the function,
The text will be spitted with delimiters ""
There is a for loop to compare all the lengths of the strings, and
Print the longest one value
The problem is, with the following code, I can take the string from the text area but dun know why I cannot split the string, and it returns the error "Uncaught ReferenceError: targetString is not defined"
The code is as followed
function findlongestword(){
var testing = document.getElementById('text').value;
console.log(testing);
var strText = testing.split(" ");
var length = 0;
for (var i=0; i < strText.length; i++) {
if (length < strText[i].length) {
length = strText[i].length;
targetString = strText[i]
}
}
console.log (targetString);
}
window.onload = function(){
findlongestword();
document.getElementById("dlButton3").onclick = findlongestword;
}
What can be the error?
Many thanks for your help in advance!

Read more about block scope targetString only exists within the loop
function findlongestword() {
var testing = document.getElementById('text').value;
var strText = testing.split(" ");
var length = 0;
var targetString = '';
for (var i=0; i < strText.length; i++) {
if (length < strText[i].length) {
length = strText[i].length;
targetString = strText[i]
}
}
console.log (targetString);
}
window.onload = function() {
findlongestword();
document.getElementById("dlButton3").onclick = findlongestword;
}

"Uncaught ReferenceError: targetString is not defined"
You did not declare targetString before using it within your loop. Therefore javascript did not know where to find or 'Refer' to it after the loop ended.
By adding var targetString = ""; before the loop begins the problem will be solved.
function findlongestword(){
var testing = document.getElementById('text').value;
console.log(testing);
var strText = testing.split(" ");
//ADD HERE
var targetString = "";
var length = 0;
for (var i=0; i < strText.length; i++) {
if (length < strText[i].length) {
length = strText[i].length;
targetString = strText[i]
}
}
console.log (targetString);
}
window.onload = function(){
findlongestword();
document.getElementById("dlButton3").onclick = findlongestword;
}

How can I get the text to which a Nested Style is applied in InDesign

I am trying to write a script that will convert all characters to lowercase if a particular nested style is applied. I can't seem to figure out the correct syntax to get the text.
I originally tried the following, which worked to an extend, but lowercased the entire paragraph rather than only the text that has the character style applied:
function lowerCaseNest(myPStyle, myCStyle){
var myDocument = app.documents.item(0);
//Clear the find/change preferences.
app.findTextPreferences = NothingEnum.nothing;
app.changeTextPreferences = NothingEnum.nothing;
//Set the find options.
app.findChangeTextOptions.caseSensitive = false;
app.findChangeTextOptions.includeFootnotes = false;
app.findChangeTextOptions.includeHiddenLayers = false;
app.findChangeTextOptions.includeLockedLayersForFind = false;
app.findChangeTextOptions.includeLockedStoriesForFind = false;
app.findChangeTextOptions.includeMasterPages = false;
app.findChangeTextOptions.wholeWord = false;
app.findTextPreferences.appliedParagraphStyle = myPStyle;
var missingFind = app.activeDocument.findText();
var myDoc = app.documents[0];
for ( var listIndex = 0 ; listIndex < missingFind.length; listIndex++ ) {
for (i = missingFind[listIndex].nestedStyles.length-1;i>=0; i--) {
for (j = missingFind[listIndex].nestedStyles[i].parent.characters.length-1;j>=0; j--) {
if (missingFind[listIndex].nestedStyles[i].parent.characters[j].contents.appliedCharacterStyle(myCStyle)) {
var myString = missingFind[listIndex].nestedStyles[i].parent.characters[j].contents;
if (typeof(myString) == "string"){
var myNewString = myString.toLowerCase();
missingFind[listIndex].nestedStyles[i].parent.characters[j].contents = myNewString;
}
}
}
}
app.findTextPreferences = NothingEnum.nothing;
app.changeTextPreferences = NothingEnum.nothing;
}
I then tried playing around with appliedNestedStyles, but can't seem to figure out how to retrieve the text that the nested style is applied to.
Could anyone help with this?
Thanks!
John

Unless I am wrong the appliedNestedStyle can be looked after in the F/C dialog by targeting the applied characterStyle:
GREP
Find : .+
Format : character style => myCharStyle
then
var found = doc.findGrep();
…

I actually took a different tack, and figured out something that works:
function lowerCaseNest(myPStyle, myCStyle){
for (var i = 0; i < app.activeDocument.stories.length; i++){
for (var j = 0; j < app.activeDocument.stories[i].paragraphs.length; j++){
var myP = app.activeDocument.stories[i].paragraphs[j];
if (myP.appliedParagraphStyle.name==myPStyle) {
for (k=0; k<myP.characters.length; k++) {
if(typeof(myP.characters[k].appliedNestedStyles[0]) != 'undefined'){
if(myP.characters[k].appliedNestedStyles[0].name == myCStyle) {
var myC = myP.characters[k].contents;
if (typeof(myC)=='string'){
var myNewString = myC.toLowerCase();
myP.characters[k].contents = myNewString;
}
}
}
}
}
}
}
}
Still would be interested in knowing if there's an easier way to handle this, as I'm afraid this may take longer to run on long documents, since it's dealing with every paragraph individually.

How to get a HTML element by searching the content of innerHTML?

How to get a HTML element by searching the content of innerHTML?
For example, Search
I want to get the "a" tag by searching word "Search" using javascript.
Thank you

var aTags = document.querySelectorAll('a');
var searchaTag = '';
for(i = 0; i<aTags.length; i++ ) {
if(aTags[i].text == 'Search') {
searchaTag = aTags[i];
break;
}
}

If you have no idea where the element can be, iterate over each element:
var all = document.querySelectorAll('*'); //OR document.getElementsByTagName("*")
for(var i = 0; i < all.length; i++ ) {
if(all[i].innerHTML === "search") {
console.log(all[i].tagName);
}
}
If you have some clue you can narrow your search by looking inside that area:
var all = document.querySelector('#my-Container').getElementsByTagName('*');

If data attribute above X number add class to element

I need to add Class highpc to each element with the data attribute of procent, which is bigger than 51. I've got a jQuery solution, but I need it in pure JavaScript. Can anyone help me? This is what I got so far:
HTML
<span data-procent="4" class="procent">4%</span>
<span data-procent="59" class="procent">59%</span>
JS
function highpc(){
var procent = this.elem.getAttribute("data-procent");
if (parseInt(procent) > 51) {
procent.className=procent.className+" highpc";
}
}
window.onload = highpc();
http://jsfiddle.net/Zc8vY/1/

You haven't specified what is this.elem, and you haven't loop in your script.
You are also using variable procent for getting the data-attribute from your element. Later, you are trying to use it for linking the element. Try updated code:
function highpc(){
var elements = document.getElementsByClassName('procent');
for(i=0;i<elements.length;i++) {
var procent = elements[i].getAttribute("data-procent");
if (parseInt(procent) > 51) {
elements[i].className=elements[i].className+" highpc";
}
}
}
Updated fiddle http://jsfiddle.net/Zc8vY/4/

This is your fixed function:
function highpc() {
var elements = document.querySelectorAll('.procent');
for (var i = 0; i < elements.length; i++) {
var procent = elements[i].getAttribute("data-procent");
if (parseInt(procent) > 51) {
elements[i].className += " highpc";
}
}
}
window.onload = highpc;
Note the last line: you don't need () after highpc because you want window.onload to be a reference to a function, not a result of execution.
References: querySelectorAll to select elements.
Demo: http://jsfiddle.net/Zc8vY/3/

Using pure javascript and implementing own getElementsByClassName.
function getElementsByClass(className){
var celems = new Array();
var elems = document.getElementsByTagName("*");
for(var i = 0; i < elems.length;i++){
if(elems[i].className.indexOf(className) != -1){
celems.push(elems[i]);
}
}
return celems;
}
function highpc(){
var elems = getElementsByClass("procent");
console.log(elems);
for(var i = 0; i < elems.length; i++){
highpc_ex(elems[i]);
}
}
function highpc_ex(elem){
var procent = elem.getAttribute("data-procent");
if (parseInt(procent) > 51) {
elem.className=elem.className+" highpc";
}
}
window.onload = highpc();

WORKING FIDDLE HERE
function highpc() {
var aSpans = document.getElementsByTagName("span");
for(var i = 0; i < aSpans.length; i++) {
var eSpan = aSpans[i];
var procent = eSpan.getAttribute("data-procent");
if (procent != null && parseInt(procent) > 51) {
eSpan.className += " highpc";
}
}
}
This is a similar variant to what others have already posted. You might find this one to be more performant for larger sets of html.
Ref: Why .getElementsByTagName() is faster than .querySelectorAll()

str.split() inside $(document).ready() does not work?

http://jsfiddle.net/MQHkA/2/
$(document).ready(function() {
var mystring="fusioncharts,om,bdutt";
var arr = mystring.split(','); //array returned
for(var i = 0; i < arr.length; i++) {
alert(arr[i]);
}
}
Would the above code work ?
EDIT---
Well the real code block is this :
handle1 = getUrlVars();
if(handle1 == '') {
$("input#handle1").val('barackobama');
$("input#handle2").val('aplusk');
$("input#handle3").val('charliesheen');
handle1 = 'barackobama,aplusk,charliesheen';
} else {
alert(handle1); // this says fusioncharts,om,bdutt
var queryvals = [];
queryvals = handle1.split(',');
alert('length'+queryvals.length); // *** this says nothing ***
for(var i = 0; i < queryvals.length; i++) {
alert(queryvals[i]); // *** nothing here too.. ****
}
}
And the entire block is in a $(document).ready()...
Must be some simple error which I'm unable to spot..

you are missing the closing parentheses other than that it works fine
$(document).ready(function() {
var mystring="fusioncharts,om,bdutt";
var arr = mystring.split(','); //array returned
for(var i = 0; i < arr.length; i++) {
alert(arr[i]);
}
}); // this one is missing on yours

Yes, but you have to close off your example with
);
http://jsfiddle.net/gMU9t/

You forgot to close your parentheses and already have sounded the alarm. Debug your code before asking. Javascript functions work fine. You need to be more attentive.