I've got this string which needs to be converted to an array:
var string = "[[Restaurants], [Restaurants], [Restaurants], [Caterers, Foods - Take-out]]";
I then need to be able to access its value like so:
var foo = arr[0]; //returns "Restaurant"
var bar = arr[3]; //returns "Caterers, Foods - Take-out"
I tried removing the first and last characters ( "[" and "]" ) but I was still left with a problem when splitting on "," because some of the value have commas inside them. Any ideas?
You could use a combination of the split method and the map method. split creates the array and map cleans it up by returning a new Array:
var string = '[[Restaurants], [Restaurants], [Restaurants], [Caterers, Foods - Take-out]]';
var items = string.split('],').map(
function(s) { return s.replace(/(\[\[| \[|\]\])/g, ''); }
);
http://jsfiddle.net/4LYpr/
Since you are splitting and trying to make an array first remove the first("[[") and last ("]]") then split the string by ("], [").
Easy:
> a = "[[Restaurants], [Restaurants], [Restaurants], [Caterers, Foods - Take-out]]"
> b = a.slice(1).split(",")
> newB = []
> for (i=0;i < b.length;i++) {
formatted = b[i].trim().slice(1,-2);
newB.push(formatted);
}
Related
I want split array value .
for example
gUser[1] = CAR.BENZ.CCLASS.1962
gUser[2] = CAR.PORSCHE.911.2001
I want get string only BENZ.CLASS.1962 and PORSCHE.911.2001
How to split array value on java script?
#update.
not always CAR string.
so, not use substring.
You can use map to access each string in array then use replace. Use a regex to match string before '.' and replace only the first match, like this:
var gUser = ['CAR.BENZ.CCLASS.1962', 'CAR.PORSCHE.911.2001'];
var gUserModified = gUser.map(function(v){
return v.replace(/[^\.]+\./, '');
});
console.log(gUserModified);
Split it with dot then slice it and join it with dot
var gUser =[];
gUser[1] = "CAR.BENZ.CCLASS.1962";
gUser[2] = "CAR.PORSCHE.911.2001";
console.log(gUser[1].split('.').slice(1).join('.'));
console.log(gUser[2].split('.').slice(1).join('.'));
From your question, it's not clear if the array is a string array
If it is a string array you can do:
ES6+: gUser.map((user)=>{return user.split("CAR.")[1]})
ES5: gUser.map(function(user){return user.split("CAR.")[1]});
The below code is not tested but should probably work, with maybe minor tweaks
var splitStr = ''
var correctCarArr = []
for(let i = 0; i < gUser.length; i++){
splitStr = gUser[i].split('.')
let temp = ''
for(let j = 1; j < splitStr.length; j++){
temp += splitStr[j]
}
correctCarArr.push(temp)
}
var gUser = [];
gUser[1] = "CAR.BENZ.CCLASS.1962";
var gu1 = gUser[1].split(".");
gu1.shift();
console.log(gu1.join("."));
So here is the way without using any regex by only using string and array methods.
const gUser = ['CAR.BENZ.CCLASS.1962', 'CAR.PORSCHE.911.2001', 'XYZAB.PORSCHE.YSA.2021']
for (let i = 0; i < gUser.length; i++) {
console.log('Required String: ', gUser[i].split('.').slice(1).join('.'));
}
What we do is, we split the string into parts where . is encountered.
gUser[0].split('.') returns ['CAR', 'BENZ', 'CCLASS', '1962']
Later when slice(1) is called, the zeroth element of array is chopped off and will return ['BENZ', 'CCLASS', '1962']
And finally using join('.'), we merge the array elements to a single string with a . between each element, which returns BENZ.CCLASS.1962
Hope this helps! :)
Its easier split then shift the array to remove the first item like this:
gUser = ["CAR.BENZ.CCLASS.1962"];
var benz = gUser[0].split(".");
benz.shift();
alert(benz.join('.'));
There are other options from shift like slice(1) but In terms of performance, shift is apparently faster https://jsperf.com/shift-pop-vs-slice/4
Something Like This
`for(let index = 0; index < gUser.length; index++) {
console.log(gUser[index].split('.').splice(0, 1).join('.'));
}`
I haven't tested it. Please check and let me know
I have a comma-separated string being pulled into my application from a web service, which lists a user's roles. What I need to do with this string is turn it into an array, so I can then process it for my end result. I've successfully converted the string to an array with jQuery, which is goal #1. Goal #2, which I don't know how to do, is take the newly created array, and remove all characters before any array item that contains '/', including '/'.
I created a simple work-in-progress JSFiddle: https://jsfiddle.net/2Lfo4966/
The string I receive is the following:
ABCD,ABCD/Admin,ABCD/DataManagement,ABCD/XYZTeam,ABCD/DriverUsers,ABCD/RISC
ABCD/ in the string above can change, and may be XYZ, MNO, etc.
To convert to an array, I've done the following:
var importUserRole = 'ABCD,ABCD/Admin,ABCD/DataManagement,ABCD/XYZTeam,ABCD/DriverUsers,ABCD/RISC';
var currentUserRole = importUserRole.split(',');
Using console.log, I get the following result:
["ABCD", "ABCD/Admin", "ABCD/DataManagement", "ABCD/XYZTeam", "ABCD/DriverUsers", "ABCD/RISC"]
I'm now at the point where I need the code to look at each index of array, and if / exists, remove all characters before / including /.
I've searched for a solution, but the JS solutions I've found are for removing characters after a particular character, and are not quite what I need to get this done.
You can use a single for loop to go through the array, then split() the values by / and retrieve the last value of that resulting array using pop(). Try this:
for (var i = 0; i < currentUserRole.length; i++) {
var data = currentUserRole[i].split('/');
currentUserRole[i] = data.pop();
}
Example fiddle
The benefit of using pop() over an explicit index, eg [1], is that this code won't break if there are no or multiple slashes within the string.
You could go one step further and make this more succinct by using map():
var importUserRole = 'ABCD,ABCD/Admin,ABCD/DataManagement,ABCD/XYZTeam,ABCD/DriverUsers,ABCD/RISC';
var currentUserRole = importUserRole.split(',').map(function(user) {
return user.split('/').pop();
});
console.log(currentUserRole);
You can loop through the array and perform this string replace:
currentUserRole.forEach(function (role) {
role = role.replace(/(.*\/)/g, '');
});
$(document).ready(function(){
var A=['ABCD','ABCD/Admin','ABCD/DataManagement','ABCD/XYZTeam','ABCD/DriverUsers','ABCD/RISC'];
$.each(A,function(i,v){
if(v.indexOf('/')){
var e=v.split('/');
A[i]=e[e.length-1];
}
})
console.log(A);
});
You could replace the unwanted parts.
var array = ["ABCD", "ABCD/Admin", "ABCD/DataManagement", "ABCD/XYZTeam", "ABCD/DriverUsers", "ABCD/RISC"];
array = array.map(function (a) {
return a.replace(/^.*\//, '');
});
console.log(array);
var importUserRole = 'ABCD,ABCD/Admin,ABCD/DataManagement,ABCD/XYZTeam,ABCD/DriverUsers,ABCD/RISC';
var currentUserRole = importUserRole.split(',');
for(i=0;i<currentUserRole.length;i++ ){
result = currentUserRole[i].split('/');
if(result[1]){
console.log(result[1]+'-'+i);
}
else{
console.log(result[0]+'-'+i);
}
}
In console, you will get required result and array index
I would do like this;
var iur = 'ABCD,ABCD/Admin,ABCD/DataManagement,ABCD/XYZTeam,ABCD/DriverUsers,ABCD/RISC',
arr = iur.split(",").map(s => s.split("/").pop());
console.log(arr);
You can use the split method as you all ready know string split method and then use the pop method that will remove the last index of the array and return the value remove pop method
var importUserRole = ABCD,ABCD/Admin,ABCD/DataManagement,ABCD/XYZTeam,ABCD/DriverUsers,ABCD/RISC';
var currentUserRole = importUserRole.split(',');
for(var x = 0; x < currentUserRole.length; x++;){
var data = currentUserRole[x].split('/');
currentUserRole[x] = data.pop();
}
Here is a long way
You can iterate the array as you have done then check if includes the caracter '/' you will take the indexOf and substact the string after the '/'
substring method in javaScript
var importUserRole = 'ABCD,ABCD/Admin,ABCD/DataManagement,ABCD/XYZTeam,ABCD/DriverUsers,ABCD/RISC';
var currentUserRole = importUserRole.split(',');
for(var x = 0; x < currentUserRole.length; x++){
if(currentUserRole[x].includes('/')){
var lastIndex = currentUserRole[x].indexOf('/');
currentUserRole[x] = currentUserRole[x].substr(lastIndex+1);
}
}
This is my input as string
'controls: ["aa.bb.cc","dd.ee.ff"],elements: []'
I want to get the result of the data in the controls meaning :
"aa.bb.cc","dd.ee.ff"
I tried pattern
/.*(controls:.*).*/
but I didn't get all the result
I think my problem is becuase the new line
You can do it with regEx
var c = 'controls: ["aa.bb.cc", "dd.ee.ff"], elements: []';
var match = c.match(/("[a-z.]+")/g);
// or c.match(/([a-z][a-z][.][a-z][a-z][.][a-z][a-z])/);
// to strictly match letters . letters . letters
// or for a shorter match: c.match(/(\w+[.]\w+[.]\w+)/);
console.log(match); // an array of your values
EDIT:
if you only want to get the values in controls and not element, you can get the controls values out with the regEx /controls: ([\["a-z., \]]+,)/g
You could simply parse your input as a JSON object then loop throught the controls array:
var input='controls: ["aa.bb.cc", "dd.ee.ff"],
elements: []';
json = JSON.parse(input);
var controls=json.controls;
//then loop throught the controls values
for(var i=0;i<controls.length;i++){
console.log(controls[i]);
}
I think that should do it.
This might look like a very crude solution, but it works.
This expression will give you aa.bb.cc :
var res = str.match(/controls: \[(.*)\]/)[1].match(/\"(.*)\",\"(.*)\"/)[1]
and this will give the next element i.e. dd.ee.ff
var res = str.match(/controls: \[(.*)\]/)[1].match(/\"(.*)\",\"(.*)\"/)[2]
In general,
var str = "controls: [\"aa.bb.cc\",\"dd.ee.ff\"],elements: []";
var resLength = str.match(/controls: \[(.*)\]/)[1].match(/\"(.*)\",\"(.*)\"/).length;
var res = str.match(/controls: \[(.*)\]/)[1].match(/\"(.*)\",\"(.*)\"/);
for (var i=1; i<resLength; i++) {
console.log(res[i]);
}
How can I use regex in javascript to put items and its values in a array ?
This is my data sample:
battery.voltage: 13.50
battery.voltage.nominal: 12.0
beeper.status: enabled
device.type: ups
driver.name: blazer_ser
driver.parameter.pollinterval: 2
Thanks
use the below code to do that... here variable data contains your data...
data=data.split(/\n+/);
var output={};
for(var i=0;i<data.length;i++){
var a=data[i].split(/:\040+/);
output[a[0]]=a[1];
}
These codes will give you an array like below...
Array (
battery.voltage: "13.50",
battery.voltage: "12.0",
beeper.status: "enabled",
device.type: "ups",
driver.name: "blazer_ser",
driver.parameter.pollinterval: "2"
)
Example:
output['driver.name'] === "blazer_ser"
Why use regular expression, you can simply use substr and indexOf. Assuming you have your list stored in an array you can simply loop through the entries and split on the first occurrence of a colon.
var items = [...]; // Your items.
var arr = {};
for (var i = items.length - 1; i >= 0; i--) {
var key = items[i].substr(0, items[i].indexOf(':'));
var value = items[i].substr(items[i].indexOf(':') + 1).trim();
arr[key] = value;
}
This solution will only work in browsers implementing the trim method. If you want to be on the save side you can overwrite the String.prototype and add the trim method. (See Trim string in JavaScript?)
If you have your items as a string separated by newlines you can easily split it into an array through split;
var list = "battery.voltage: 13.50\n"
+ "battery.voltage.nominal: 12.0\n"
+ "beeper.status: enabled\n"
+ "device.type: ups\n"
+ "driver.name: blazer_ser\n"
+ "driver.parameter.pollinterval: 2";
var items = list.split(/\n/);
DEMO
Here's a solution that makes only one pass through the string data using a single regex:
var list = "battery.voltage: 13.50\n"
+ "battery.voltage.nominal: 12.0\n"
+ "beeper.status: enabled\n"
+ "device.type: ups\n"
+ "driver.name: blazer_ser\n"
+ "driver.parameter.pollinterval: 2";
function parse(data) {
var match, result = {};
var pattern = /\s*([^:\s]+)\s*:\s*([^:\s]+)$/gm;
while (match = pattern.exec(data)) {
result[match[1]] = match[2];
}
return result;
}
var test = parse(list);
// dump array
for (var i in test)
console.log(i + ": " + test[i]);
// select one
console.log(test["driver.parameter.pollinterval"]);
Click here to try it out on jsfiddle
This is the Contents of file from where i am reading...
aaa 3333,bbb 5,ccc 10
I am getting un defined for the keyvalue[2], [3], [4] and [5]. Why is it so???
I am actually first spliting based on , and then based on space.
because you split by comma first, so item is now 'PrimeSuiteId 3333'. When you split that by space you get two items only, so 3rd value (keyvalue[2]) and above is empty.
Edit: possible fix to make second part of your script work
swap
var items = contents.toString().split(',');
with
var items = contents.toString().replace(/,/,' ');
which will simply replace commas with spaces in the original string so your array of expected values matches up
Another edit: because splitting by comma or space is better (as in comments)
var contents = f.read();
Ti.API.info(contents);
var items = contents.toString(); // changed to return complete string not split
// removed for loop altogether
var keyvalue = items.split(/,|\s/); // changed to split by comma or space
var AppointmentSearchDaysAfter = keyvalue[0];
var AppointmentSearchDaysAfterValue = keyvalue[1];
var AppointmentSearchDaysBefore = keyvalue[2];
var AppointmentSearchDaysBeforeValue = keyvalue[3];
var PrimeSuiteId = keyvalue[4];
var PrimeSuiteIdValue = keyvalue[5];
From the contents in the contents file you should only be able to get values for
var AppointmentSearchDaysAfter = keyvalue[0];
var AppointmentSearchDaysAfterValue = keyvalue[1];
You only have one space for each data entry between the commas
Split function is working fine, you are expecting it to behave abnormal.
You will get only two values in array after split by space. From where will it bring 6 values!!!?
The rest values you will get in next iterations.
Instead of declaring individual variables for each item and then loading them from the contents string, you can reduce the whole thing to an object with key/value pairs:
var items = contents.split(',').reduce(function (acc, val) {
var split = val.split(' ');
return acc[split[0]] = split[1], acc;
}, {});
To test what the values are, try:
console.log(items.PrimeSuiteId); // outputs 3333
console.log(items.AppointmentSearchDaysBefore); // outputs 5
console.log(items.AppointmentSearchDaysAfter); // outputs 10