Save the ultimate expression in selectbox - javascript

I wrote this code to save the expressions in a "memory" (textarea) in a select box, the code apparently works.
I would, however, prevent to save an expression already present in the select statement. In this case the code does not work. How so? It seems that there are no errors.
var flag = false;
for (var i = 0; i < select.options.length; i++) {
if (select.options[i].value == document.getElementById('textarea').value) {
flag = true;
break;
}
}
if(!flag){
select.options[select.options.length] = new Option(result, result); //salvo l'operazione in selectbox
document.getElementById('operazione').disabled = true;
}else{
alert("Memoria occupata");
}

Try this
function save()
{
var savedmemory = document.getElementById('operations');
var expression = document.getElementById('code').innerHTML;
var flag = false;
for (var i = 0; i < savedmemory.options.length; ++i)
{
if (savedmemory.options[i].text == result)
{
flag = true;
break;
}
}
if (flag)
{
alert("no.");
}
else
{
//
savedmemory.options[savedmemory.options.length] = new Option(result, result);
}
}
operations is the reference toselect.
code to the textarea.

Related

Search, count duplicated strings and add for each numbers

I have a script that is searching for duplicated text strings in an array and changing the colors.
function checkDuplicates() {
var values = new Array();
var $input = $('input[type=\'text\']');
var error = 0;
$input.each(function() {
$(this).removeClass('double-error');
var that = this;
if (that.value!='') {
values[that.value] = 0;
$('input[type=\'text\']').each(function() {
if (this.value == that.value) {
values[that.value]++;
}
});
} //endif
});
$input.each(function(key) {
if (values[this.value]>1) {
error++;
$(this).addClass('double-error');
}
});
return (error <= 0); //returns false or true
}
<style type="text/css">
.double-error {
color:red;
border:1px solid red;
}
</style>
This is working fine.
However, I need to count duplicated strings and add keep track of whether they are the first occurence of that word, the second occurence of that word, etc.
For example:
Given john, john, peter, doe, peter, john, the result would be john-1, john-2, peter-1, doe, peter-2, john-3.
This is what I currently have:
function eliminateDuplicates() {
var values = new Array();
var $input = $('input[type=\'text\']');
var error = 0;
$input.each(function() {
$(this).removeClass('double-error');
var that = this;
if (that.value!='') {
values[that.value] = 0;
$('input[type=\'text\']').each(function() {
if (this.value == that.value) {
values[that.value]++;
}
});
}
});
$input.each(function(key) {
if (values[this.value]>1) {
error++;
myArray = values[this.value];
for (var i = 0; i < myArray; i++) {
$(this).parent()
.find('input[type=\'text\']')
.val(this.value + '-' + i);
}
}
});
return error <= 0; //return error > 0 ? false : true;
}
But I got this result:
john-0-1-2, john-0-1-2, peter-0-1, doe, peter-0-1, john-0-1-2
What's wrong?
I make some modification:
function eliminateDuplicates() {
var values = new Array();
var $input = $('input[type=\'text\']');
var error = 0;
$input.each(function() {
$(this).removeClass('double-error');
var that = this;
if (that.value!='') {
values[that.value] = 0;
$('input[type=\'text\']').each(function() {
if (this.value == that.value) {
values[that.value]++;
}
});
}
});
$input.each(function(key) {
if (values[this.value]>1) {
var name=this.value;
var names = values[this.value];
values[this.value]++;
for (var i = 0; i < names; i++){
$(this).parent().find('input[type=\'text\']').val(name + '-' + i);
}
}
});
checkDoubles();
return error <= 0; //return error > 0 ? false : true;
}
now I getting counts in sequence but not from 1.
for example if I have 4 duplicated names (Peter) i getting:
Peter-3, Peter-4, Peter-5, Peter-6.
but I need
Peter-1, Peter-2, Peter-3, Peter-4.
what wrong?
I think you're looking for something like this:
function eliminateDuplicates() {
var repeats = {};
var error = false;
//cache inputs
var $inputs = $("input[type='text']");
//loop through inputs and update repeats
for (i = 0; i < $inputs.length; ++i) {
//cache current element
var cur = $inputs[i];
//remove class
$(cur).removeClass("double-error");
//get text of this element
var text = $(cur).val();
//no text -- continue
if (text === "") {
continue;
}
//first time we've came across this value -- intialize it's counter to 1
if ((text in repeats) === false) {
repeats[text] = 1;
}
//repeat offender. Increment its counter.
else {
repeats[text] = repeats[text] + 1;
}
//update the the value for this one
$(cur).val(text + "-" + repeats[text]);
}
return error; // always returns false since I'm not sure
// when it's supposed to return true.
}
PS: I didn't understand when error was supposed to be true, so it's always false. Nevertheless, this should be enough to get you going.
PPS: Plunker here.

Showing alert on second occurrence

I have given a call for the below javascript function on drop down selection.
Basically what my requirement is that ,there can be a lot of vndrCd .
But,When ever the first time vndrCd is "SFGL", alert should not open .
If "SFGL is coming second time then an alert should come . I am not able to put this condition as the call to the method is at every click . Is there a way I can achive this .
function GetOptions(var1) {
varId = var1.id;
var vndrNbrCdList = document.getElementById('TouchCellDetailForm:vendorNbrCodeList').value;
var splitVndrList = vndrNbrCdList.split(',');
if (var1.value == '0') {
varhiddBox.value = '0';
return;
}
for (var j = 0; j < splitVndrList.length; j++) {
if (splitVndrList[j].split('-')[0] == (var1.value)) {
var vndrCd = splitVndrList[j].split('-')[1];
break;
}
}
localStorage.setItem("vendorName", vndrCd);
var vendorName1 = localStorage.getItem("vendorName");
if (vendorName1 == 'SFGL') {
alert("Salesforce vendor has already been selected.Please select some other vendor");
}
}
You can use closure to hold a private variable to indicate whether 'SFGL' has been encountered or not:
function GetOptionsHelp() {
'use strict';
let called = false;
return function GetOptions(var1) {
// ... your code block
if (vendorName1 == 'SFGL') {
if (called) {
alert("Salesforce vendor has already been selected.Please select some other vendor");
} else {
called = true;
}
}
}
And you can call the function like this GetOptionsHelp()(var1)
Try doing something like this as an easy solution:
(function () {
var firstTimeFlag = true;
function GetOptions(var1) {
varId = var1.id;
var vndrNbrCdList = document.getElementById('TouchCellDetailForm:vendorNbrCodeList').value;
var splitVndrList = vndrNbrCdList.split(',');
if (var1.value == '0') {
varhiddBox.value = '0';
return;
}
for (var j = 0; j < splitVndrList.length; j++) {
if (splitVndrList[j].split('-')[0] == (var1.value)) {
var vndrCd = splitVndrList[j].split('-')[1];
break;
}
}
localStorage.setItem("vendorName", vndrCd);
var vendorName1 = localStorage.getItem("vendorName");
if (vendorName1 == 'SFGL') {
if(!firstTimeFlag) {
alert("Salesforce vendor has already been selected.Please select some other vendor");
}
firstTimeFlag = false;
}
}
}());

How to check whether specific items inside an array have a value? Javascript

I have a function which gets values from elements:
function getTransactionValues() {
var o = {};
o.reservations = [];
$('#custom-headers option:selected').each(function (i, selected) {
o.reservations[i] = $(selected).val();
});
o.amount = $('input[name=amount-price]').val();
o.currency_value = $('input[name=currency-value]').val();
o.currency_name = $('.currency_appendto option:selected').html();
o.actual_amount = $('input[name=actual-amount]').val();
o.actual_remaining = $('input[name=actual-remaining]').val();
o.funds_arrival_date = $('input[name=funds-arrival]').val();
o.paid_to = $('.paidto option:selected').html();
o.checkbox = $('.multi-transaction:checked').map(function () {
return this.value
}).get();
return o;
}
Now i want to check whether amount, actual_amount and funds_arrival_date are filled. if they are i will release the disabled class from a button. i've tried
var check_review = function () {
var a = getTransactionValues();
var options = [a.amount, a.actual_amount, a.funds_arrival_date];
for(i = 0; i < options.length; i++) {
if(options[i].length > 0) {
$('a[name=review_button]').removeClass('disabled');
}
else{
//this array is empty
alert('There is a problem!');
}
}
}
$('.test').click(function() {
check_review();
});
But it doesn't seems to be working..
Remove disabled attribute using JQuery?
Can you please look at above link, I think we should use $('.inputDisabled').prop("disabled", false);
Even if a single array element will be non empty then your code will remove the class disabled from the a. To make sure that all the elements of array are non empty and then only you want to remove the class then the way is:
for(i = 0; i < options.length; i++) {
if(options[i].length > 0) {
$('a[name=review_button]').removeClass('disabled');
}
else{
$('a[name=review_button]').addClass('disabled');
}
}
Or the other way is
var check = true;
for(i = 0; i < options.length; i++) {
if(options[i].length == 0) {
check = false;
}
}
if(check ) $('a[name=review_button]').removeClass('disabled');
Try using Array.prototype.every()
if (options.every(Boolean)) {
$("a[name=review_button]").removeClass("disabled");
} else {
// do other stuff
}

Recursive function to traverse grid goes crazy

When the user clicks on one of the blocks in the table ( see screenshot ) I want to find all neighbouring blocks with the same color. I am trying to do this recursively, but if I try it with more than three blocks it sometimes goes crazy and calls itself over and over until the program crashes.
As far as I can see, the objects are added to the array, but somehow my tests fails and the same object is added over and over and over.
Any insight on what the problem might be and how to solve it would be much appriciated!
Here's a screenshot
This is the function that is called when the user clicks on a block:
var $matchArray;
$('.block').click(function () {
$matchArray = [$(this)];
var $colorClass;
if ($(this).hasClass('red')) {
$colorClass = 'red';
} else if ($(this).hasClass('green')) {
$colorClass = 'green';
} else if ($(this).hasClass('blue')) {
$colorClass = 'blue';
} else {
$colorClass = 'error';
}
findAllSameColorNeighbours($(this), $colorClass);
});
And this is the recursive method:
findAllSameColorNeighbours = function ($this, $colorClass) {
$this.css('border-style', 'solid');
//LEFT
var $leftBlock = isLeftBlockSameColor($this, $colorClass);
if ($leftBlock != null) {
if (!(arrayContains($matchArray, $leftBlock))) {
$matchArray.push($leftBlock);
findAllSameColorNeighbours($leftBlock, $colorClass);
}
}
//ABOVE
//same as for LEFT
//RIGHT
//same as for LEFT
//BELOW
//same as for LEFT
}
This is how I find the neighboring cells, as far as I can see these work just fine. I have one for each direction:
isLeftBlockSameColor = function ($block, $color) {
var $this = $block;
var $tr = $this.parent().parent();
var col = $tr.children().index($this.parent().prev());
var $leftBlock = $this.parent().siblings().eq(col).children();
var $blockClassMatch = $leftBlock.hasClass($color);
if ($blockClassMatch) {
return $leftBlock;
}
else {
return null;
}
};
Here are some help methods to find out if the object is already in the array or not. I use the index of the row and cell to create a sort of latitude and longditude thing.
arrayContains = function ($array, $object) {
for (i = 0; i < Array.length; i++) {
if (compareIndex($array[i], $object)) {
say('true');
return true;
}
};
return false;
};
compareIndex = function ($obj1, $obj2) {
if ((getRowIndex($obj1)) === (getRowIndex($obj2)) {
if ((getCellIndex($obj1)) === (getCellIndex($obj2)) {
return true;
} else {
return false;
}
} else {
return false;
}
};
getCellIndex = function ($this) {
var $tr = $this.parent().parent();
var index = $tr.children().index($this.parent());
return index;
};
getRowIndex = function ($this) {
var $tr = $this.parent().parent();
var index = $tr.index();
return index;
};
There is a bug in the arrayContains function. The loop will iterates only once, because Array.length is equals to 1(As I tested with chrome browser, but I don't know why). You should use $array.length instead.
arrayContains = function ($array, $object) {
//for (i = 0; i < Array.length; i++) {
for (i = 0; i < $array.length; i++) {
if (compareIndex($array[i], $object)) {
say('true');
return true;
}
};
return false;
};

Livecycle javascript...condense if statement

I'm working on a form that will have a "Validate" button. The purpose of this button is to check and make sure all the fields are completed (this is what the project demands). Below is the code that checks to see if the field is null and then changes the border color and displays a text box.
if (form1.Main.sfRequestor.requestNameFirst.rawValue == null){
form1.Main.sfRequest.txtValidate.presence = "visible";
form1.Main.sfRequestor.requestNameFirst.border.edge.color.value = "255,0,0"
} else {
form1.Main.sfRequest.txtValidate.presence = "hidden";
form1.Main.sfRequestor.requestNameFirst.border.edge.color.value = "255,255,255"
};
if (form1.Main.sfRequestor.requestNameLast.rawValue == null){
form1.Main.sfRequest.txtValidate.presence = "visible";
form1.Main.sfRequestor.requestNameLast.border.edge.color.value = "255,0,0"
} else {
form1.Main.sfRequest.txtValidate.presence = "hidden";
form1.Main.sfRequestor.requestNameLast.border.edge.color.value = "255,255,255"
};
There are 20+ fields in several subforms that need to be checked. I'm trying to consolidate the code but am at a loss on how to do so. Can variables handle field names in Javascript?
You can make this into a loop pretty easily, and could write it as an IIFE to keep your namespace clean
(function (arr) {
var txtValidate = form1.Main.sfRequest.txtValidate,
i, e;
for (i = 0; i < arr.length; ++i) {
e = form1.Main.sfRequestor[arr[i]]; // cache me
if (e.rawValue == null){
txtValidate.presence = "visible";
e.border.edge.color.value = "255,0,0"
} else {
txtValidate.presence = "hidden";
e.border.edge.color.value = "255,255,255"
}
}
}(['requestNameFirst', 'requestNameLast']));
However, it looks like txtValidate.presence only ever gets set to whatever the last item's conditions were, are you sure you don't want to use a flag and set this last instead? e.g.
(function (arr) {
var txtValidateState = 'hidden',
i, e;
for (i = 0; i < arr.length; ++i) {
e = form1.Main.sfRequestor[arr[i]];
if (e.rawValue == null){
txtValidateState = "visible"; // any null makes txtValidate visible
e.border.edge.color.value = "255,0,0"
} else {
e.border.edge.color.value = "255,255,255"
}
}
form1.Main.sfRequest.txtValidate.presence = txtValidateState; // set last
}(['requestNameFirst', 'requestNameLast']));
Update for generic forms, assuming sfRequestor and sfRequest
(function (form, arr) {
var txtValidateState = 'hidden',
i, e;
for (i = 0; i < arr.length; ++i) {
e = form.sfRequestor[arr[i]];
if (e.rawValue == null){
txtValidateState = "visible";
e.border.edge.color.value = "255,0,0";
} else {
e.border.edge.color.value = "255,255,255";
}
}
form.sfRequest.txtValidate.presence = txtValidateState;
}(form1.Main, ['requestNameFirst', 'requestNameLast']));
Update Assuming sfRequest is a constant but sfRequestor could be something different
(function () { // moved IIFE to protect namespace
function validate(form, subform, arr) { // now named, new param subform
var txtValidateState = 'hidden',
i, e;
for (i = 0; i < arr.length; ++i) {
e = form[subform][arr[i]]; // select from subform
if (e.rawValue == null){
txtValidateState = "visible";
e.border.edge.color.value = "255,0,0";
} else {
e.border.edge.color.value = "255,255,255";
}
}
form.sfRequest.txtValidate.presence = txtValidateState; // assuming stays same
}
validate(form1.Main, 'sfRequestor', ['requestNameFirst', 'requestNameLast']);
validate(form1.Main, 'sfClientInfo', ['firstname']);
// if you have many here you can re-write as a loop again
}());
You could easily make this into a simple function:
function validateField(element) {
if (element.rawValue == null) {
form1.Main.sfRequest.txtValidate.presence = "visible";
element.border.edge.color.calue = "255,0,0";
}
else {
form1.Main.sfRequest.txtValidate.presence = "hidden";
element.border.edge.color.calue = "255,255,255";
}
}
And then just call it like so:
validateField(form1.Main.sfRequestor.requestNameFirst);
validateField(form1.Main.sfRequestor.requestNameLast);
To simplify even further, put all 20 elements in an array and loop
var elements = [form1.Main.sfRequestor.requestNameFirst, form1.Main.sfRequestor.requestNameLast, ...];
elements.forEach(function(element) {
validateField(element);
});

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