Develop Reference

How to use higher order functions instead of FOR Loop for Line items in Suitelet printouts (Netsuite)?

i have been tasked by my senior to print values of line items using higher order functions (.filter/.map/.reject/.reduce). I m confused how to write the higher order function instead of a for loop(for printing the line values in Invoice Printout). I need to print the line only when the qty is more than 3. I m an intern and i dont know how it will work, kindly help.
Link to The code snippet: https://drive.google.com/file/d/1uVQQb0dsg_bo53fT3vk9f0G8WwZomgQg/view?usp=sharing
I always used if condition for printing the row only when the quantity field has value more than 3. I even know how to .filter but i dont know how to call it and where to call it. Please help

I don't believe Array.from works in server side code. If it does then use that. What I have been using are the following functions. They don't conform to the higher order functions specified but they work with Netsuite syntax and go a long way towards simplifying sublist handling and encapsulating code:
//SS2.x
//I have this as a snippet that can be included in server side scripts
function iter(rec, listName, cb){
var lim = rec.getLineCount({sublistId:listName});
var i = 0;
var getV = function (fld){
return rec.getSublistValue({sublistId:listName, fieldId:fld, line:i});
};
for(; i< lim; i++){
cb(i, getV);
}
}
// to use it:
iter(ctx.newRecord, 'item', function(idx, getV){
if(parseInt(getV('quantity')) >3){
...
}
});
or for SS1 scripts I have the following which allows code to be shared between UserEvent and Scheduled scripts or Suitelets
function forRecordLines(rec, machName, op, doReverse) {
var i, pred, incr;
var getVal = rec ? function(fld) {
return rec.getLineItemValue(machName, fld, i);
} : function(fld) {
return nlapiGetLineItemValue(machName, fld, i);
};
var getText = rec ? function(fld) {
return rec.getLineItemText(machName, fld, i);
} : function(fld) {
return nlapiGetLineItemText(machName, fld, i);
};
var setVal = rec ? function(fld, val) {
rec.setLineItemValue(machName, fld, i, val);
} : function(fld, val) {
nlapiSetLineItemValue(machName, fld, i, val);
};
var machCount = rec ? rec.getLineItemCount(machName) : nlapiGetLineItemCount(machName);
if(!doReverse){
i = 1;
pred = function(){ return i<= machCount;};
incr = function(){ i++;};
}else{
i = machCount;
pred = function(){ return i>0;};
incr = function(){ i--;};
}
while(pred()){
var ret = op(i, getVal, getText, setVal);
incr();
if (typeof ret != 'undefined' && !ret) break;
}
}
// User Event Script:
forRecordLines(null, 'item', function(idx, getV, getT, setV){
if(parseInt(getV('quantity')) >3){
...
}
});
// in a Scheduled Script:
forRecordLines(nlapiLoadRecord('salesorder', id), 'item', function(idx, getV, getT, setV){
if(parseInt(getV('quantity')) >3){
...
}
});

Usually its a straight forward task, but since you are getting length and based on that you are iterating, you can use Array.from. Its signature is:
Array.from(ArrayLikeObject, mapFunction);
var tableData = Array.from({ length: countItem}, function(index) {
vendorBillRec.selectLineItem('item', index);
var item = vendorBillRec.getCurrentLineItemText('item', 'item');
var description = nlapiEscapeXML(vendorBillRec.getCurrentLineItemValue('item', 'description'));
var quantity = parseFloat(nullNumber(vendorBillRec.getCurrentLineItemValue('item', 'quantity')));
return { item, description, quantity}
});
var htmlData = tableData.filter(...).map(getRowMarkup).join('');
function getRowMarkup(data) {
const { itemName, descript, quantity } = data;
return '<tr>' +
'<td colspan="6">' +
'<p>' + itemName + ' ' + descript + '</p>'+
'</td>' +
'<td colspan="2" align="right">' + quantity + '</td>' +
'</tr>';
}
Or if you like to use more functional approach:
Create a function that reads and give you all data in Array format. You can use this data for any task.
Create a function that will accept an object of specified properties and returns a markup.
Pass the data to this markup after any filter condition.
Idea is to isolate both the task:
- Getting data that needs to be processed
- Presentation logic and style related code
var htmlString = Array.from({ length: countItem}, function(index) {
vendorBillRec.selectLineItem('item', index);
var item = vendorBillRec.getCurrentLineItemText('item', 'item');
var description = nlapiEscapeXML(vendorBillRec.getCurrentLineItemValue('item', 'description'));
var qty = parseFloat(nullNumber(vendorBillRec.getCurrentLineItemValue('item', 'quantity')));
return getRowMarkup(item, description, qty)
}).join('');
function getRowMarkup(itemName, descript, quantity) {
return '<tr>' +
'<td colspan="6">' +
'<p>' + itemName + ' ' + descript + '</p>'+
'</td>' +
'<td colspan="2" align="right">' + quantity + '</td>' +
'</tr>';
}

How to loop throught objects with arrays as properties

This is my code:
I want to get the first value of the arrays in every property, but it doesnt work. Thanks for help.
var arena = {
o1: ['gate',1,1],
o2: ['block',1,1]
};
$(document).ready(function(){
var canvas = document.getElementById('canvas.arena');
var xpercent = canvas.width/100;
var ypercent = canvas.height/100;
for (var key in arena) {
if (arena.hasOwnProperty(key)) {
console.log(key + " -> " + arena[key[0]]);
}
}
});

Almost:
for (var key in arena) {
console.log(key + " -> " + arena[key][0]);
}
key will always be a property, no need to check.

you are very close:
var arena = {
o1: ['gate',1,1],
o2: ['block',1,1]
};
$(document).ready(function(){
for (var key in arena) {
console.log(key + " -> " + arena[key][0]);
}
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
prepared this fiddle:
https://jsfiddle.net/njvf58ow/1/

printing the json array from certain indexes

guys i know it is dummy question but i spent several hours and still cant reach .. i want to print a json array from variable startIndex and endIndex .. all what i did is printing it all .. here is my code
GridLibrary.prototype.display = function() {
$.ajax({
url : this.getFileName(),
dataType : "json",
error : function(that, e) {
console.log(e);
},
success : function(data) {
size = data.length;
var html = [];
html.push("<table >\n<tbody>");
html.push("<tr>");
for ( var propertyNames in data[0]) {
html.push("<th>" + propertyNames + "</th>");
}
html.push("</tr>");
// loop through the array of objects
data.forEach(function(item) {
html.push("<tr>");
for ( var key in item) {
html.push("<td>" + item[key] + "</td>");
}
html.push("</tr>");
});
html.push("<table>\n</tbody>");
$('body').append(html.join(""));
}
});
};

try this, loop through only the data you need
for( var i = startIndex; var item = data[i]; i<endIndex && typeof item != 'undefined' ; i++){
html.push("<tr>");
for ( var key in item) {
html.push("<td>" + item[key] + "</td>");
}
html.push("</tr>");
}

Just before your data.forEach(...) you could use splice() to cut your data array.
Like this:
data = data.splice(startIndex, endIndex);

JavaScript foreach Key Value array

I have just this array :
var sArray = {856:"users", 857:"avatars", 858:"emails"};
and I want to use forEach in a way to get key and value from that:
key = 856
value = user
My $.each code doesn't return the result I'm expecting, and I get instead:
856:user
I must be separate that with : to get key and value from this array.
My code is:
$.each(template_array, function(key, value) {
console.log("key: " + "value: " + value);
});
How to access key and value without separate?

Just take Object.keys for the keys and Array.prototype.forEach for the values in plain Javascript.
var sArray = { 856: 'users', 857: 'avatars', 858: 'emails'};
Object.keys(sArray).forEach(function (key) {
document.write('key: ' + key + ', value: ' + sArray[key] + '<br>');
});

Just concatenate them using +
var template_array = {
856: 'users',
857: 'avatars',
858: 'emails'
};
$.each(template_array, function(key, value) {
console.log('key:' + key + ', value:' + value);
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
UPDATE :
I think you have an array then use the following code
var template_array = ['856: users',
'857: avatars',
'858: emails'
];
template_array.forEach(function(v) {
v = v.split(':');
console.log('key:' + v[0] + ', value:' + v[1]);
});

try this one
var template_array = {
856: 'users',
857: 'avatars',
858: 'emails'
};
var date = [];
$.each(template_array,function (key , val){
date.push({key:key, value:val})
});
console.log(date)

var template_array = {
856: 'users',
857: 'avatars',
858: 'emails'
};
for (key in template_array) {
console.log('key:' + key + ', value:' + template_array[key]);
});

How do I loop through a JSON list?

I have multiple items in my JSON list. I want to loop through it and display it on my page. I can't seem to get to the next object though.
{
"room":[
{"campusName":"A",
"buildingCode":"B",
"roomNumber":"208",
"times":["7-8", "9-10"]
}],
"room2":[
{"campusName":"C",
"buildingCode":"D",
"roomNumber":"208",
"times":["7-8", "9-10"
]}
]}
$(document).ready(function(){
$.getJSON("data.json", function(data){
$.each(data.room, function(){
for(var i = 0; i < data.length; i++){
$("ul").append("<li>campus: "+this['campusName']+"</li><li>building: "+this['buildingCode']+"</li><li>times: "+this.times+"</li>");
}
});
});
});

Try this
var list = '';
$.each(data, function (i, root) {
$.each(root, function (i, el) {
list += "<li>campus: " + this.campusName + "</li><li>building: " + this.buildingCode + "</li><li>times: " + this.times.join(' ') + "</li>";
});
});
$('ul').html(list);
Example
If root's has only one element in array
var list = '';
$.each(data, function (i, root) {
list += "<li>campus: " + root[0].campusName + "</li><li>building: " + root[0].buildingCode + "</li><li>times: " + root[0].times.join(' ') + "</li>";
});
$('ul').html(list);
Example

$.each(data, ..) --> Each element will be:
"room":[
{"campusName":"A",
"buildingCode":"B",
"roomNumber":"208",
"times":["7-8", "9-10"]
}]
Then, this[0] will provide the object you need to construct your li:
$.each(data, function(){
$("ul").append("<li>campus: "+this[0]['campusName']+"</li><li>building: "+this[0]['buildingCode']+"</li><li>times: "+this[0].times+"</li>");
});
Fiddle