I am writing a script that allows organisation of records and data.
However a problem right now is I use an array to store a large amount of information and at a point in my script this array is searched for a matching id and updated. The data search begins to get quite slow when the array size is more than 200 elements.
Is there any way to more efficiently search the array?
I am currently using find.(function(a){return x == y};);
Each element in my array is also a tuple.
Sample code:
onPipelineChanged: function(component, event, helper)
{
var titleid = event.getParam("titleid");
var title = event.getParam("title");
var maxSeats = event.getParam("maxSeats");
var seatsInUse = event.getParam("seatsInUse");
var item = event.getParam("item"); //This is the item that was moved.
var allGuestsList = component.get("v.allItems");
//Searches guest list for matching guest of who got moved.
var actualGuest = allGuestsList.find(function(moving){return moving.id == item.id;}); //***REALLY INEFFICIENT***
Related
I have a problem approaching this problem and I'm unsure in how to solve it. My XML looks like this:
<Order>
<OrderLines>
<ProductLine>
<ManufacturerArticleNo>ARTICLENUMBER</ManufacturerArticleNo>
<Serials>
<SerialNumber>
.
.
<SerialNumber>
</Serials>
<ProductLine>
<ManufacturerArticleNo>ARTICLENUMBER</ManufacturerArticleNo>
<Serials>
<SerialNumber>
.
.
<SerialNumber>
</Serials>
What I want to do is create an array, and fill it with objects with articleNumber, serialnumbers. Where I'm stuck is getting all the serialNumbers from a node to the corresponding article number.
Edits after comments:
Expected output: An array filled with the objects with ArticleNumber, Corresponding serial number. One serial number = one object.
Current Code:
//Create Article List
var artList = [];
//Get articles
var nodeArticleNo = xmlDoc.getFirstNode('//ProductLine/ManufacturerArticleNo');
while(nodeArticleNo != null) {
var artNo = xmlDoc.getNodeText('//ProductLine/ManufacturerArticleNo');
//Get Serials
var nodeSerialNumber = xmlDoc.getFirstNode('//Serials/SerialNumber');
while(nodeSerialNumber != null){
var serialNo = xmlDoc.getNodeText('//Serials/SerialNumber');
artList.push({ArticleNumber: artNo, SerialNumber, serialNo});
nodeSerialNumber = xmlDoc.getNextNode(nodeSerialNumber);
}
nodeArticleNo = xmlDoc.getNextNode(nodeArticleNo);
}
This is how I have been trying to solve it but I hate the while in a while and it is not working as intended
Thank you!
I'm new to coding, and I need to display past search values from an input field using localstorage. The only way I can think of is by using one object key with an array of stored values from an on click event. Problem is, I can only get one position to appear as a value, with each value generated replacing the last. I've tried for loops and can't seem to get it to work. This is the code I have so far:
$('.search-city').on('click', function(e){
e.preventDefault();
var textArr = [];
var text = $(".form-control").val();
textArr.push(text);
localStorage.setItem("value1", textArr);
});
$('.search-city').on('click', function(e){
e.preventDefault();
var search = localStorage.getItem("value1")
This would work:
$('.search-city').on('click', function(e){
e.preventDefault();
// get the value from local storage
var localValue = localStorage.getItem('value1');
// if we had a value, parse it back to an array, if we dont, create an empty array
var textArr = localValue ? JSON.parse(localValue) : [];
// get the text from the search input, dont use "form-control"
// you're likely to have several of those on the page
// give the element a custom class like "search-input" and use that (id would be even better)
var text = $('.search-input').val();
// add the text to the array
text = trim(text);
if (text) {
textArr.push(text);
}
// enforce a size limit here by removing the 0 index item if the count has grown too large
var maxAllowed = 10;
while (textArr.length > maxAllowed) {
textArr.shift();
}
// localstorage can only hold simple strings so we'll JSON stringify our object and store that
localValue = JSON.stringify(textArr);
localStorage.setItem("value1", localValue);
});
I have two worksheets in my google spreadsheet:
Input data is coming into the Get Data worksheet via the importxml function.
However, I would like to copy all values of the Get Data sheet to the Final Data sheet and if there are duplicates(in terms of rows) append the unique row.
Here is what I tried:
function onEdit() {
//get the data from old Spreadsheet
var ss = SpreadsheetApp.openById("1bm2ia--F2b0495iTJotp4Kv1QAW-wGUGDUROwM9B-D0");
var dataRange = ss.getSheetByName("Get Data").getRange(1, 1, ss.getLastRow(), ss.getLastColumn());
var dataRangeFinalData = ss.getSheetByName("Final Data").getRange(1, 1, ss.getLastRow(), ss.getLastColumn());
var myData = dataRange.getValues();
//Open new Spreadsheet & paste the data
newSS = SpreadsheetApp.openById("1bm2ia--F2b0495iTJotp4Kv1QAW-wGUGDUROwM9B-D0");
Logger.log(newSS.getLastRow());
newSS.getSheetByName("Final Data").getRange(newSS.getLastRow()+1, 1, ss.getLastRow(), ss.getLastColumn()).setValues(myData);
//remove duplicates in the new sheet
removeDups(dataRangeFinalData)
}
function getId() {
Browser.msgBox('Spreadsheet key: ' + SpreadsheetApp.getActiveSpreadsheet().getId());
}
function removeDups(array) {
var outArray = [];
array.sort(lowerCase);
function lowerCase(a,b){
return a.toLowerCase()>b.toLowerCase() ? 1 : -1;// sort function that does not "see" letter case
}
outArray.push(array[0]);
for(var n in array){
Logger.log(outArray[outArray.length-1]+' = '+array[n]+' ?');
if(outArray[outArray.length-1].toLowerCase()!=array[n].toLowerCase()){
outArray.push(array[n]);
}
}
return outArray;
}
Below you can find the link to a sample spreadsheet:
Sample Sheet
My problem is that the data does not get pasted.
I appreciate your replies!
tl;dr: See script at bottom.
An onEdit() function is inappropriate for your use case, as cell contents modified by spreadsheet functions are not considered "edit" events. You can read more about that in this answer. If you want this to be automated, then a timed trigger function would be appropriate. Alternatively, you could manually invoke the function by a menu item, say. I'll leave that to you to decide, as the real meat of your problem is how to ensure row-level uniqueness in your final data set.
Merging unique rows
Although your original code is incomplete, it appears you were intending to first remove duplicates from the source data, utilizing case-insensitive string comparisons. I'll suggest instead that some other JavaScript magic would help here.
We're interested in uniqueness in our destination data, so we need to have a way to compare new rows to what we already have. If we had arrays of strings or numbers, then we could just use the techniques in How to merge two arrays in Javascript and de-duplicate items. However, there's a complication here, because we have an array of arrays, and arrays cannot be directly compared.
Hash
Fine - we could still compare rows element-by-element, which would require a simple loop over all columns in the rows we were comparing. Simple, but slow, what we would call an O(n2) solution (Order n-squared). As the number of rows to compare increased, the number of unique comparison operations would increase exponentially. So, let's not do that.
Instead, we'll create a separate data structure that mirrors our destination data but is very efficient for comparisons, a hash.
In JavaScript we can quickly access the properties of an object by their name, or key. Further, that key can be any string. We can create a simple hash table then, with an object whose properties are named using strings generated from the rows of our destination data. For example, this would create a hash object, then add the array row to it:
var destHash = {};
destHash[row.join('')] = true; // could be anything
To create our key, we're joining all the values in the row array with no separator. Now, to test for uniqueness of a row, we just check for existence of an object property with an identically-formed key. Like this:
var alreadyExists = destHash.hasOwnProperty(row.join(''));
One additional consideration: since the source data can conceivably contain duplicate rows that aren't yet in the destination data, we need to continuously expand the hash table as unique rows are identified.
Filter & Concatenate
JavaScript provides two built-in array methods that we'll use to filter out known rows, and concatenate only unique rows to our destination data.
In its simple form, that would look like this:
// Concatentate source rows to dest rows if they satisfy a uniqueness filter
var mergedData = destData.concat(sourceData.filter(function (row) {
// Return true if given row is unique
}));
You can read that as "create an array named mergedData that consists of the current contents of the array named destData, with filtered rows of the sourceData array concatenated to it."
You'll find in the final function that it's a little more complex due to the other considerations already mentioned.
Update spreadsheet
Once we have our mergedData array, it just needs to be written into the destination Sheet.
Padding rows: The source data contains rows of inconsistent width, which will be a problem when calling setValues(), which expects all rows to be squared off. This will require that we examine and pad rows to avoid this sort of error:
Incorrect range width, was 6 but should be 5 (line ?, file "Code")
Padding rows is done by pushing blank "cells" at the end of the row array until it reaches the intended length.
for (var col=mergedData[row].length; col<mergedWidth; col++)
mergedData[row].push('');
With that taken care of for each row, we're finally ready to write out the result.
Final script
function appendUniqueRows() {
var ss = SpreadsheetApp.getActive();
var sourceSheet = ss.getSheetByName('Get Data');
var destSheet = ss.getSheetByName('Final Data');
var sourceData = sourceSheet.getDataRange().getValues();
var destData = destSheet.getDataRange().getValues();
// Check whether destination sheet is empty
if (destData.length === 1 && "" === destData[0].join('')) {
// Empty, so ignore the phantom row
destData = [];
}
// Generate hash for comparisons
var destHash = {};
destData.forEach(function(row) {
destHash[row.join('')] = true; // could be anything
});
// Concatentate source rows to dest rows if they satisfy a uniqueness filter
var mergedData = destData.concat(sourceData.filter(function (row) {
var hashedRow = row.join('');
if (!destHash.hasOwnProperty(hashedRow)) {
// This row is unique
destHash[hashedRow] = true; // Add to hash for future comparisons
return true; // filter -> true
}
return false; // not unique, filter -> false
}));
// Check whether two data sets were the same width
var sourceWidth = (sourceData.length > 0) ? sourceData[0].length : 0;
var destWidth = (destData.length > 0) ? destData[0].length : 0;
if (sourceWidth !== destWidth) {
// Pad out all columns for the new row
var mergedWidth = Math.max(sourceWidth,destWidth);
for (var row=0; row<mergedData.length; row++) {
for (var col=mergedData[row].length; col<mergedWidth; col++)
mergedData[row].push('');
}
}
// Write merged data to destination sheet
destSheet.getRange(1, 1, mergedData.length, mergedData[0].length)
.setValues(mergedData);
}
I'm trying to load an array from one page and then have the results appear on another using javascript/jQuery. So a user will make a selection from a dropdown. Based on this dropdown the "customers" address, phone, email, etc. will appear in a text field. I'm trying to store those results in to the array (name | address | etc in one index of the array), display the result on the second screen, and then allow the user to add more names if necessary.
At the moment I'm trying to use localStorage to store the values and then JSON.stringify to convert the results so they can be stored in the array.
I think these are all of the pertinent lines:
var customerArray = [];
var getName = $('#DropDownList1').val();
var getAddress = $('#DataList1').text().trim();
var getPhone = $('#DataList2').text().trim();
var getEmail = $('#DataList3').text().trim();
//store the variables
localStorage.setItem("name", getName);
localStorage.setItem("address", getAddress);
localStorage.setItem("phone", getPhone);
localStorage.setItem("email", getEmail);
//user will click #btnAdd to add the customers information
//into customerArray[]
$("#btnAdd").click(function () {
var setName = localStorage.getItem("name");
var setAddress = localStorage.getItem("address");
var setPhone = localStorage.getItem("phone");
var setEmail = localStorage.getItem("email");
var post = setName + setAddress + setPhone + setEmail;
if (customerArray.length == 0) {
customerArray[0] = post;
} else {
for (var i = 1; i < customerArray.length; ++i) {
//store results of 'post' into the array
customerArray.push(post);
localStorage.setItem("storedArray",JSON.stringify(customerArray));
}
}
}); //end #btnAdd click event
Form here the 2nd page will load with a text field that will (should) display the results of the array (customerArray). Unfortunately I can only get 1 value to appear.
At the moment this is the block being used to display the results:
$('#tbContactList').val(JSON.parse(localStorage.getItem("storedArray")));
If it matters I'm writing the application using Visual Studio Express 2012 for Web. The data that initially populates the customers information comes from a database that I've used ASP controls to get. I'm confident there is a perfectly simple solution using ASP/C# but I'm trying to solve this problem using javascript/jQuery - I'm more familiar with those languages than I am with C#.
Thank you.
Use Array.join() to turn your array into a string to store.
Then use Array.split() to turn your string back into an Array.
Example
var arr=['name','email','other'];
var localStorageString=arr.join(',');
localStorage.setItem('info',localStorageString);
var reassemble=localStorage.info.split(',');
for(var i=0;i<reassemble.length;i++){
document.body.innerHTML+=reassemble[i]+"<br/>";
}
http://jsfiddle.net/s5onLxd3/
Why does the user have to leave the current page though? IS a tabbed/dynamic interface not an option?
I have a series of editable lists which, on a press of a button should be transformed into some sort of data structure. When it has been turned into some sort of data I need to add duplicates together.
Example:
200g banana
100g apple
200g apple
Should be turned into a data list of some sort and should in the end look like this:
200g banana
300g apple
Here's my attempt:
//button click event
$(".calculate").bind("click", function(e)
{
//get the correct parent of the button
var parent = $(this).closest("#calc");
//get relevant data
parent.find(".options").each(function(index, element)
{
var opt1 = $(this).children(".opt1").children("input").val(); //weight
var opt2 = $(this).children(".opt2").children("input").val(); //ingredient
});
});
Basically I click the button and the above script finds all the relevant data.
How can I turn this into a multidimensional array or a list of objects I can search for duplicates in?
When I try to make a dynamic object it seems to fail and when I make a multidimensional array to search in I get blocked by inArray's inability to search through them.
Problem recap:
I am able to get the user data no problem. Turning it into a list and adding together duplicates is the problem.
I will suggest you to have a global object that will contain the summary, this will look like this:
$(".calculate").bind("click", function(e)
{
var fruits = {};
//get the correct parent of the button
var parent = $(this).closest("#calc");
//get relevant data
parent.find(".options").each(function(index, element)
{
var opt1 = $(this).children(".opt1").children("input").val(); //weight
var opt2 = $(this).children(".opt2").children("input").val(); //ingredient
// here is my code
if(fruits[opt2] == undefined) {
fruits[opt2] = opt1;
} else {
// assuming that opt1 is an integer
fruits[opt2] += opt1;
}
});
// use fruits variable here
});
Here's another variant, which also does some simple parsing in case you have 100g as input, versus 100. Also, the data structure gets reinitialized every time, so everything does not get doubled on every click.
$(".calculate").bind("click", function(e)
{
//get the correct parent of the button
var parent = $(this).closest("#calc");
var ingredients = {};
var extractWeight = function (input) {
// you can add other logic here
// to parse stuff like "1kg" or "3mg"
// this assumes that everything is
// in grams and returns just the numeric
// value
return parseInt(input.substring(0, input.length - 1));
}
//get relevant data
parent.find(".options").each(function(index, element)
{
var opt1 = $(this).children(".opt1").children("input").val(); //weight
var opt2 = $(this).children(".opt2").children("input").val(); //ingredient
// initialize to 0 if not already initialized
ingredients[opt2] = ingredients[opt2] ? ingredients[opt2] : 0;
ingredients[opt2] += extractWeight(opt1);
});
});
Here are some tips:
{} is called an object literal and is used to create a new empty object
object members can be accessed dynamically through the [] notation (i.e. if x === "name" then o[x] === o.name)
variables are visible inside functions that are at the same level or deeper in the scope - like in my example I use ingredients in the each function.
arrays in JavaScript only support numeric keys, so you won't have stuff like PHP's "associative arrays". Objects fill this gap in JS.
Here is a jsFiddle that does what you're looking for :) http://jsfiddle.net/LD9TY/
It has two inputs, one for the item name and the other for the amount. When you click add, it checks an object to see if the item was already added. If so, it increments the amount for that item based on your input. If not, it adds that item with the amount you specified. It then goes and builds a ul with all the items in your "store".
Note that this is a quick and dirty example, so there is no type checking or validation going on :)