I'm trying to replace a unkown amount of strings inside a string and save it in a variable.
var wpContent;
var sourceUrlArray = [];
var pageContent = response.d.Content
for (var i = 0; i < sourceUrlArray.length; i++) {
wpContent = pageContent.replace(sourceUrlArray[i].url, sourceUrlArray[i].sourceUrl)
}
pageContent holds the string where i want to replace one or more instances of a string. The old and new values are stored in sourceUrlArray.
The content of the sourceUrlArray is dynamic and can change.
Only the last replacement is made. I know that is has something to do with it overwriting the wpcontent variable, but I can't seem to figure out where I am going wrong here.
Related
new to JS and I'm trying to append all the elements of an array to one string or element. I have tried a few different things but to no luck.
for (let i = 0; i < data.foodlist.length; i++) {
const foodlist_obj = data.foodlist.item[i];
console.log(foodlist_obj)
}
This returns a list like so:
Apple
Banana
Orange
Grapes
etc
But I would love to get the list to be like "Apple, Banana, Orange, Grapes, etc".
I have tried to use append and a few other options but cant seem to figure it out any help is appreciated
This returns a list like so:
It does not return a list. const foodlist_obj is a local variable within the for loop and as such it's being reset at every iteration. What is logged is a single string variable 5 times.
You need to declare the variable outside the loop as an array, then append to it.
const foodlist_obj = [];
for (let i = 0; i < data.foodlist.length; i++) {
foodlist_obj[foodlist_obj.length] = data.foodlist.item[i];
}
console.log(foodlist_obj)
Use Array#join to concatenate the items:
const data = {foodlist:['Apple', 'Banana', 'Orange', 'Grapes']}
const joined = data.foodlist.join(", ");
console.log(joined);
if you want to get them as string you can use toString() method
const foodlist_obj = data.foodlist.toString()
also you can use join() to replace comma separate with any other thing like new line
const foodlist_obj = data.foodlist.join("\n")
if you wants to get them as text with a special syntax you can create a variable called text and set it's type to string then add the array elements when loop
var text = "";
for (let i = 0; i < data.foodlist.length; i++) {
text += data.foodlist[i] + " item number("+i+")\n";
}
console.log(text)
if you get error that's will be of you because in your code you looping through data.foodlist but when you called the array you called him as data.foodlist.item[i] how do you called item property when you looping through data.foodlist you should call it like that data.foodlist[i] so check your array good first before loop
also you testing the foodlist_obj when you still loop and that's shouldn't give you something except one item in each iteration
also you used const to decalre your variable but const is unchangeable variable it's take just the first value assigned to it there's some cases when you can push items to const but you can't assign then add new items to const as text
good evening, I am trying to use a single value to search an array, and return the full line the said value is in.
The Array is set up like this in string form:
Xanax,Brand,Anxiety,Code
However, now I'm stuck with calling back only the Medication, and not the full line the Medication is in, sadly. I would like to be able to grab each variable in a line, and make them their own independent variables outside of the array so I can use them for something else.
this.importDataObject("MEDDIAGNOSISICD-10.txt", "C:/Users/dell/Documents/tab
excel/MEDDIAGNOSISICD-10.txt");
var oFile = this.getDataObjectContents("MEDDIAGNOSISICD-10.txt");
var cFile = util.stringFromStream(oFile, "utf-8");
var fileArray = cFile.split('\t');
var Med = this.getField("Medications 1");
var Index = fileArray.indexOf(Med.value);
var Call = fileArray[Index];
console.println(Call);
Any help would be wonderful!
It's because you are running the indexOf method on the whole array, you need to run it on the each value instead. Try a for loop before you check IndexOf method.
Like this:
var i, Index;
for (i = 0; i < fileArray.length; i++) {
Index = fileArray[i].indexOf(Med.value);
if(Index > -1) console.log('Your search is found in ' + fileArray[i] );
}
Note that, in here the variable Index will be 0 or larger if that search is successful. And will be of value -1 if no match is found.
I have multiple variables containing JSON as string (received from AJAX).
data.output_data_1234
data.output_data_5678
I convert them to Array:
var outputdataarr = new Array(data.output_data_1234);
This works fine, but how do I add a number to the var name:
var outputdataarr = new Array('data.output_data_'+formid+'');
this one does not work.
formid contains a proper number.
This does not work too:
var outputvar = window['data.output_data_' + formid];
var outputdataarr = new Array(outputvar);
Please help. Thanks.
You probably mean, you need something like this:
var outputdataarr = new Array(data['output_data_'+formid]);
You can only use string in square brackets as an object field identifier. It cannot contain '.'.
UPDATE:
However, you will probably need a loop to fill the whole array, e.g.
var outputdataarr = new Array();
for (var i=1000; i<2000; i++) {
outputdataarr.push(data['output_data_'+formid]);
}
Use [] instead of new Array is better.
var outputdataarr = [];
outputdataarr.push(data['output_data_'+formid]);
//and so on
This is annoying me.
I'm setting an array in beginning of the doc:
var idPartner;
var myar = new Array();
myar[0] = "http://example.com/"+idPartner;
And I'm getting a number over the address, which is the id of partner. Great. But I'm trying to set it without success:
$.address.change(function(event) {
idPartner = 3;
alert(idPartner);
}
Ok. The alert is giving me the right number, but isn't setting it.
What's wrong?
Changing the value of the variable does not re-set the values within the array. That is just something javascript can't do automatically. You would have to re-generate the array for it to have the new id. Could you add the id to the value where you use the array instead of pre-setting the values in the array containing the id?
Edit: For example, you would do:
var myArray = [];
var myId = 0;
myArray[0] = "http://foo.com/id/";
and when you need to use a value from the array, you would do this:
var theVal = myArray[0] + myId;
Try this:
var myvar = ["http://site.com/"];
$.address.change(function(event) {
myvar[1] = 3;
}
then use myvar.join () where you need the full url.
The problem here is that at the line
myar[0] = "http://site.com/"+idPartner;
..you perform a string concatenation, meaning you copy the resulting string into the array at index position 0.
Hence, when later setting idPartnerit won't have any effect on the previously copied string. To avoid such effect you can either always construct the string again when the idPartnervariable updates or you create an object and you evaluate it when you need it like...
var MyObject = function(){
this.idPartner = 0; //default value
};
MyObject.prototype.getUrl = function(){
return "http://site.com/" + this.idPartner;
};
In this way you could use it like
var myGlblUrlObj = new MyObject();
$.address.change(function(event){
myGlblUrlObj.idPartner = ... /setting it here
});
at some later point you can then always get the correct url using
myGlblUrlObj.getUrl();
Now obviously it depends on the complexity of your situation. Maybe the suggested array solution might work as well, although I prefer having it encapsulated somewhere in an object for better reusability.
myar[0] = "http://site.com/" + idPartner;
After this line, myar[0] = "http://site.com/undefined" and it has nothing to do with the variable idPartner no more.
So, after that changing the value of idPartner will affect the value of myar[0].
You need to change the value of myar[0] itself.
I am a newbie in JS. Here is my code and I believe it should work... but it doesn't.
var pop = new Array();
pop['la'] = new Array('nt','gb','te');
pop['sa'] = new Array('nt','gb');
pop['ha'] = new Array('pc','pa');
var _ecpop="la";
for (var i = 0; i < pop[_ecpop].length; i++)
{
document.write(pop[_ecpop][i]);
}
I just do not know any alternate way to have a map of vectors of a string.
Thanks,
Amir.
That's not an Array, but a Javascript Object, containing Arrays in it's properties. You can use Object and Array literals for that. The advantage is that your code looks much cleaner. There are seldom reasons to use new Array or new Object in javascript code (see for example this SO Question).
var pop = {
la: ['nt','gb','te'],
sa: ['nt','gb'],
ha: ['pc','pa']
}
now you can use
for (var i = 0; i < pop.la.length; i++) {
console.log(pop.la[i]);
}
if a property label is stored in a variable (like you _ecpop), you can use bracket notiation to retrieve it's value:
var laArr = pop[_ecpop];
for (var i = 0; i < laArr.length; i++) {
console.log(laArr[i]);
}
The other way around you can assign a label to an Object:
var _ecpop = 'la';
pop[_ecpop] = ['nt','gb','te'];
document.write is not the preferred way to put things on your page. It's better and just as easy to use some element with an id, and write output to it using innerHTML, for example
document.getElementById('myOutput').innerHTML = '[some output here]';
In javascript, an array can only have numeric indexes, if you want to use textual indexes, you should use object instead.
var pop = new Object();
or
var pop = {};
and then:
pop['la'] = new Array('nt','gb','te');
However, as an object is not an array, it has no length member, but just as an array you can use the for..in to go through all of its values.
Using document.write is not a good choice as it only works during the document loading, not after it. Try to use text nodes or innerhtml instead.