As the title reads, my javascript file won't append to a filtered list via a random generator function, for context it's being built in replit so perhaps its just a buggy bit of software on replits end, though I'm certain I've done something wrong and can't for the life of me figure out what. The main idea for this project is to have it randomly select an item from a list, append it to an empty list, then pass that string to an HTML textarea tag to be displayed as text.
Code in question:
var LowercaseList = ["a","b","c","d","e","f","g","h","i","j","k","l","m","n","o","p","q","r","s","t","u","v","w","x","y","z"];
var NumList = ["1","2","3","4","5","6","7","8","9","0"];
var SpecialCharList = ["`","~","!","#","$","%","^","&","*","_","-","+","=","<",">","?","/"];
// Letter list ID's since I couldn't figure out how to run this using a database
var LetterIDList = [1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26];
// Number list ID's since I couldn't figure out how to run this using a database
var NumIDList = [1,2,3,4,5,6,7,8,9,10];
// Special character list ID's since I couldn't figure out how to run this using a database
var SpecialID = [1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17];
// Filtered Lists
var UpperFiltered = [];
var LowerFiltered = [];
var NumFiltered = [];
var SpecialFiltered = [];
// Global declarations of random number variables to grab values from intial lists
var UpperGenVariable;
var LowerGenVariable;
var NumGenVariable;
var SpecialGenVariable;
// Creates a basic password with 2 of each kind of character
function Basic () {
for (var i = 1; i < 2; i++) {
UppercaseGenerate();
}
for (var i = 1; i < 2; i++) {
LowercaseGenerate();
}
for (var i = 1; i < 2; i++) {
NumGenerate();
}
for (var i = 1; i < 2; i++) {
SpecialGenerate();
}
};
let passwordGen = document.getElementById("PasswordDisplay")
function UppercaseGenerate () {
var UpperFiltered = [];
UpperGenVariable = Math.random(0, LetterIDList.length);
for (var i = 0; i < LetterIDList.length - 1; i++) {
if (LetterIDList[i] == UpperGenVariable) {
appendItem(UpperFiltered, UppercaseList[i]);
}
};
console.log(UpperFiltered);
passwordGen.value = UpperFiltered
};
HTML textarea code:
<label style = "color:white;" for="PasswordDisplay">Your generated password ----></label>
<textarea readonly id="PasswordDisplay" name="PasswordDisplay" rows="10" cols="50">
Please select a password complexity setting
</textarea>
I changed how you generate the random number.
Also added the UppercaseList, added i <= 2 rather then i < 2 in the cycles so the yould really run 2 times, added += to passwordGen.value += UpperFiltered so the value would add up.
I guess that is it.
var UppercaseList = ["A","B","C","D","E","F","G","H","I","J","K","L","M","N","O","P","Q","R","S","T","U","V","W","X","Y","Z"];
var LowercaseList = ["a","b","c","d","e","f","g","h","i","j","k","l","m","n","o","p","q","r","s","t","u","v","w","x","y","z"];
var NumList = ["1","2","3","4","5","6","7","8","9","0"];
var SpecialCharList = ["`","~","!","#","$","%","^","&","*","_","-","+","=","<",">","?","/"];
// Letter list ID's since I couldn't figure out how to run this using a database
var LetterIDList = [1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26];
// Number list ID's since I couldn't figure out how to run this using a database
var NumIDList = [1,2,3,4,5,6,7,8,9,10];
// Special character list ID's since I couldn't figure out how to run this using a database
var SpecialID = [1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17];
// Filtered Lists
var UpperFiltered = [];
var LowerFiltered = [];
var NumFiltered = [];
var SpecialFiltered = [];
// Global declarations of random number variables to grab values from intial lists
var UpperGenVariable;
var LowerGenVariable;
var NumGenVariable;
var SpecialGenVariable;
// Creates a basic password with 2 of each kind of character
function Basic () {
for (var i = 1; i <= 2; i++) {
UppercaseGenerate();
}
for (var i = 1; i <= 2; i++) {
LowercaseGenerate();
}
for (var i = 1; i <= 2; i++) {
NumGenerate();
}
for (var i = 1; i <= 2; i++) {
SpecialGenerate();
}
};
let passwordGen = document.getElementById("PasswordDisplay")
function UppercaseGenerate() {
var UpperFiltered = [];
UpperGenVariable = Math.floor(Math.random() * LetterIDList.length);
for (var i = 0; i < LetterIDList.length; i++) {
if (LetterIDList[i] == UpperGenVariable) {
UpperFiltered.push(UppercaseList[i]);
}
};
passwordGen.value += UpperFiltered
};
I am receiving a type error stating that the array testA[i] is undefined whenever I add an input into the html page. I have the array set and i'm trying to add the value of currency to the array using the push method to add to the second part of the array i.e([0][currency])
function Test() {
var testA = [];
for (i = 0; i < 4; i++) {
this.currency = prompt("Please enter a 3-letter currency abbreviation", "");
testA[i].push(currency);
}
}
var index = new Test();
any help as to why the array is undefined would be appreciated.
Note: I have now tried both testA.push(currency) and testA[i] = this.currency, and I still get the same error as before.
Note: the final version should have it loop through 4 different questions asked and each time adding these into an array. At the end of the loop a new variant of the array should be made and the new set of data entered will be added to it. something like
for(i = 0; i < 4; i++) {
testA[i] = i;
for(j = 0; j < 4; j++) {
this.currency = prompt("Please enter a 3-letter currency abbreviation", "");
testA[i][j] = this.currency;
}
}
but at this point in time I'm just trying to get it to work.
You don't use the push method on a index. You use it on the array itself.
Replace this
testA[i].push(currency);
With this
testA.push(currency);
You need to perform push operation on the array directly.
testA.push(currency);
By executing testA[index] you will receive hold value. In JS it will always return undefined, if index is greater than array length.
Because your array is empty as the beginning, you are always receiving undefined.
You are mixing up two different implementation.
Either you use direct assignation.
var testA = new Array(4);
for (i = 0; i < 4; i += 1) {
this.currency = prompt('...', '');
testA[i] = this.currency;
}
Either you push new values into the array.
var testA = [];
for (i = 0; i < 4; i += 1) {
this.currency = prompt('...', '');
testA.push(this.currency);
}
You should use the second one, which is the most simple soluce.
testA[i] = this.currency OR testA.push(this.currency)
Use Modified function below
function Test() {
var testA = [];
for (i = 0; i < 4; i++) {
this.currency = prompt("Please enter a 3-letter currency abbreviation", "");
testA[i] = this.currency; // use this.currency here if you
}
console.log(testA);
}
var index = new Test();
I'm new to Google Apps Script & I'm trying to make a script for a spreadsheet where I can get the range for the matched value. But there's no function for the cell value like .getRow() or .getRange() or something like this since it's a string value. Here are my codes,
function getInfo() {
var ss1 = sheet1.getSheetByName("Sheet1");
var ss2 = sheet2.getSheetByName("Rates");
var getCountry = ss1.getRange(ss1.getLastRow(), 11).getValue();
var countryRange = ss2.getRange(2, 1, ss2.getLastRow(), 1).getValues();
var getZone = 0;
for (var i = 0; i < countryRange.length; i++) {
if (countryRange[i] == getCountry) {
var getrow_cr = countryRange[i].getRow(); //.getRow() doesn't apply here for string value
getZone = ss2.getRange(getrow_cr + 1, 2).getValue();
}
}
Logger.log(getZone);
}
How can I get the row for the matched string so that I can get the cell value beside the matched cell value?
Your looping variable i starts at 0, which in your case is equivalent to Row 2. To help keep that clear, you could use a named variable to track the first row with data:
var firstrow = 2;
Then when you find a match, the spreadsheet row it's in is i + firstrow.
Updated code:
function getInfo() {
var ss1 = sheet1.getSheetByName("Sheet1");
var ss2 = sheet2.getSheetByName("Rates");
var getCountry = ss1.getRange(ss1.getLastRow(), 11).getValue();
var firstrow = 2;
var countryRange = ss2.getRange(firstrow, 1, ss2.getLastRow(), 1).getValues();
var getZone = 0;
for (var i = 0; i < countryRange.length; i++) {
if (countryRange[i][0] == getCountry) {
var getrow_cr = i + firstrow;
getZone = ss2.getRange(getrow_cr, 2).getValue();
break; // Found what we needed; exit loop
}
}
Logger.log(getZone);
}
Since countryRange is a two-dimensional array with one element in each row, the correct way to reference the value in row i is countryRange[i][0]. If you instead just compare countryRange[i], you are relying on the JavaScript interpreter to coerce the "row" into a String object.
I'm fairly new to javascript and something I've been playing with lately is the 'for' statement. I'm questioning one thing, though. I've learned how to make a 'for' statement do things as if it was an output, like this:
for (i = 0; i < 3; i++) {
console.log(i);
}
But what if you want to set a variable for the whole output of the 'for' statement?
var destinationArray = ["town", "areas", "bosses"];
var destinationArraySet = 1;
var i;
for ( i = 0; i < destinationArraySet; i++) {
console.log(destinationArray[i]);
} /*the whole thing should be equal to var destination */
var userDestinationPrompt = ("Where would you like to go? Available places: " +
/* var destination */
+
".").toUpperCase();
To give some more context: I'm making a game that allows further destinations when the destination before is cleared. Once that's achieved, I set destinationArraySet to a higher value, which means that more places would be logged and put after 'Available places'.
Help would be very appreciated! If there's something not clear enough let me know.
The for statement is not an expression, so it doesn't have a return value. Use a variable to collect values in the loop:
var destination = '';
for (var i = 0; i < destinationArraySet; i++) {
destination += destinationArray[i] + ' ';
}
Of course, if you only want to concatenate the values in part of an array, you can use the slice method to get part of it, then the join method:
var destination = destinationArray.slice(0, destinationArraySet).join(' ');
var destination = '';
var destinationArray = ["town", "areas", "bosses"];
var destinationArraySet = 1;
for (var i = 0; i < destinationArraySet; i++) {
destination += destinationArray[i] + '\n';
}
console.log(destination);
Try this -
var destinationArray = ["town", "areas", "bosses"];
var destinationArraySet = 1;
var i;
var availablePlaces = '';
var separator = '';
for ( i = 0; i < destinationArraySet; i++) {
availablePlaces += separator + destinationArray[i];
separator = ', ';
}
var userDestinationPrompt = ("Where would you like to go? Available places: " +
availablePlaces + ".").toUpperCase();
The for statement doesn't have an "output", it's not a function. Thinking for as a function will give you troubles later on. for is simply a statement that continuously execute the block of code inside. It does not "output", or in other words, return any value.
Do this instead:
var destinationArray = ["town", "areas", "bosses"], destinationArraySet = 1;
var userDestinationPrompt = ("Where would you like to go? Available places: " +
destinationArray.slice(0, destinationArraySet).join("\n")
+ ".").toUpperCase();
prompt(userDestinationPrompt);
Demo: http://jsfiddle.net/7c2b9q7m/1/
destinationArray.slice(0, destinationArraySet): Cuts the array to the specified length.
.join("\n"): Join the newly created array by \ns (newline) to micic the default console.log behavior.