Please an help to iterate literal dictionary on cappuccino environment.Thanks
var userDict = #{#"name": #"Jack",#"secondName": #"Buck",#"name": #"Jacob",#"secondName": #"Smith"};
for (var righe in userDict){
console.log(righe.name + righe.secondName);
}
output NaN
I'd probably do something like this:
for (var key in [userDict allKeys])
{
console.log(key, userDict[key]);
}
But your dictionary looks wrong; this:
#{
#"name": #"Jack",
#"secondName": #"Buck",
#"name": #"Jacob",
#"secondName": #"Smith"
};
Will overwrite the name and secondName indices and result in:
#{
#"name": #"Jacob",
#"secondName": #"Smith"
};
You probably wanted a CPArray of CPDictionary:
var users = [
#{
#"name": #"Jacob",
#"secondName": #"Smith"
},
#{
#"name": #"Jacob",
#"secondName": #"Smith"
}
];
Then if you loop over users; you get one user dictionary for each step in the loop, and you can address its ' indices (properties).
Since both CPArray and CPDictionary are tollfree-bridged to their native javascript counterparts, you can still do this:
for (var ix = 0; ix < users.length; ix ++)
{
var user = users[ix];
console.log(user.name, user.secondName);
}
Hope this helps.
Related
jslint tell Unexpected 'for'.
so i think that i must convert for with foreach
but how?
if someone can help
thanks
// Grab the original element
var original = document.getElementsByTagName("noscript")[0];
// Create a replacement tag of the desired type
var replacement = document.createElement("span");
var i;
// Grab all of the original's attributes, and pass them to the replacement
for(i = 0, l = original.attributes.length; i < l; ++i){
var nodeName = original.attributes.item(i).nodeName;
var nodeValue = original.attributes.item(i).nodeValue;
replacement.setAttribute(nodeName, nodeValue);
}
// Persist contents
replacement.innerHTML = original.innerHTML;
// Switch!
original.parentNode.replaceChild(replacement, original);
You have a comma after i = 0, <========
it should be semicolon.
Another issue is declaring l = original.attributes.length you don't need the variable l
just use it as for(i = 0; i < original.attributes.length; ++i){
if you still wanna use a forEach you can do it as:
original.attributes.forEach(element => {
var nodeName = element.nodeName;
var nodeValue = element.nodeValue;
replacement.setAttribute(nodeName, nodeValue);
});
thanks for your answer, i got Uncaught TypeError: original.attributes.forEach is not a function
function Switch() {
var original = document.getElementsByTagName("noscript")[0];
var replacement = document.createElement("span");
original.attributes.forEach(element => {
var nodeName = element.nodeName;
var nodeValue = element.nodeValue;
replacement.setAttribute(nodeName, nodeValue);
});
// Persist contents
replacement.innerHTML = original.innerHTML;
// Switch!
original.parentNode.replaceChild(replacement, original);
}
I have a working JSFiddle demo
https://jsfiddle.net/u1fohjxw/
The idea is to create a unique list of items, based on multiple fields.
I know the way I've implemented it could be improved, but need advice on doing it in JSLINQ.
This filtered unique list I then manually loop and add again - this could be done in JSLINQ.
Please indicate how this should be done :
var myList = [
{FirstName:"Chris",LastName:"Pearson"},
{FirstName:"Chris",LastName:"Pearson"},
{FirstName:"Chris",LastName:"Sutherland"},
{FirstName:"John",LastName:"Ronald"},
{FirstName:"Steve",LastName:"Pinkerton"}
];
var exampleArray = JSLINQ(myList)
.Distinct(function(item){ return item.FirstName.concat(";",item.LastName)}).items
var newList = [];
for (var x = 0 ; x < exampleArray.length ; x++) {
var arraylist = exampleArray[x].split(";");
var y= new Object();
y.FirstName = arraylist[0];
y.LastName = arraylist[1];
newList.push(y);
};
how you doing? :)
Maybe something like this helps you out:
var myList = [
{FirstName:"Chris",LastName:"Pearson"},
{FirstName:"Chris",LastName:"Pearson"},
{FirstName:"Chris",LastName:"Sutherland"},
{FirstName:"John",LastName:"Ronald"},
{FirstName:"Steve",LastName:"Pinkerton"}
];
var resultList = myList.Distinct(function(x){
return {
FirstName: x.FirstName,
LastName: x.LastName
}
}).ToArray();
This will return an array of the object returned inside the distinct.
Edit:
Change the distinct method to this:
Distinct: function(clause) {
var item, dict = {}, retVal = [];
for (var i = 0; i < this.items.length; i++) {
item = clause.apply(this.items[i], [this.items[i]]);
if (dict[JSON.stringify(item)] === undefined) {
dict[JSON.stringify(item)] = true;
retVal.push(item);
}
}
dict = null;
return JSLINQ(retVal);
},
It's not stress tested, I don't know how much time will take to iterate through 10k+ objects, but it's something to study and improve! :)
There's another possible fix to this if you want to try.
Cheers!
I have a DataTable containing some data, and I am going to fetch some data from it using Linq to datatable.
The query looks like this:
var requiredData=dt.AsEnumerable()
.Where(row => row.Field<byte>("id") == 1)
.Select(x=> {
id = x.Field<int>("id"),
YYYYY = x.Field<string>("ColumnName2"),
ZZZZZ = x.Field<string>("ColumnName3")
}
);
Now, Please how do I iterate-through "requiredData"?
You could use a foreach loop:
foreach (var item in requiredData)
{
// TODO: use item.id, item.YYYYY and item.ZZZZZ here
}
I have the following in my view:
#{ var index = 0; }
#foreach (var item in Model)
{
...
#{
index += 1;
}
}
but i get
No overload for method 'Write' takes 0
arguments
what gives?
thanks
i believe it should be...
#{ var index = 0; }
#foreach (var item in Model)
{
index += 1;
}
I want to set i to 0 of the first item from a json criteria, eg. if the criteria is green in this case the i will start from 3... if criteria = blue it will start on 2... i need to set it to start from 0 or 1 whether it is.. also how to count total of a criteria, eg. green total is 2,, blue=1, red=2... thanks in advance!
var myBox_html ="";
var i = 0;
function createDiv(1x,2x,3x) {
A = '<something>'+1x;
B = '<something>'+2x;
C = '<something>'+3x;
myBox_html += '<something-more>'+A+B+C;
}
criteria // is a parameter from url, in this case means green
get_it = function(doc) {
var jsonData = eval('(' + doc + ')');
for (var i=0; i<jsonvar.name.length; i++) {
var 1x = jsonvar.name[i].1;
var 2x = jsonvar.name[i].2;
var 3x = jsonvar.name[i].3;
if (1x == criteria){
var Div = createDiv(1x,2x,3x);
} else {null}
}
document.getElementById("myBox").innerHTML = myBox_html;
}
get_it();
json should look like this:
var jsonvar = {"name":[{"1":"red","2":"round","3":"fruit"},{"1":"red","2":"squared","3":"box"},{"1":"blue","2":"squared","3":"box"},{"1":"green","2":"squared","3":"box"},{"1":"green","2":"pear","3":"fruit"}]};
Consider several solutions:
1: Generate criteria-grouped JSON response on the server-side. E.g.
var jsonvar = '{"name":{
"red": [{"1":"red","2":"round","3":"fruit"}, {"1":"red","2":"squared","3":"box"}],
"blue": [{"1":"blue","2":"squared","3":"box"}],
"green":[{"1":"green","2":"squared","3":"box"}, {"1":"green","2":"pear","3":"fruit"}]}}';
2: Convert you JSON array to criteria-grouped format as defined above. Here is sample routine for such a grouping:
function group_elements (arr) {
var result = {};
for (var i=0; i < arr.length; i++) {
if (!result[arr[i][1]]) {
result[arr[i][1]] = [];
}
result[arr[i][1]].push(arr[i]);
}
return result;
}
Both solutions allows you to iterate only filtered records and count length of group.