Simple lightweight string operation library for Typescript.

Installation

npm install typescript-string-operations

No jQuery required! Unit tested, works with Angular.

 import { StringBuilder, emptyString, joinString, formatString, isNullOrWhiteSpace } from 'typescript-string-operations';

When migrating from Version 1.4.1 or lower, you can also import the class String. Using this String class would override the native String object from JavaScript. We will remove this declaration with the next major release

 import { String } from 'typescript-string-operations';

USAGE:

String.empty

var id = emptyString; // or String.empty
// output: id = '';

String.isNullOrWhiteSpace():

var id = image.GetId();
if(isNullOrWhiteSpace(id)) // String.isNullOrWhiteSpace(id)
	return image;

String.format():

var id = image.GetId()
formatString("image_{0}.jpg", id) // or String.format()
output: "image_2db5da20-1c5d-4f1a-8fd4-b41e34c8c5b5.jpg";

Specifier available!

var value = formatString("{0:L}", "APPLE"); //output "apple"

value = formatString("{0:U}", "apple"); // output "APPLE"

value = formatString("{0:d}", "2017-01-23 00:00"); //output "23.01.2017"

value = formatString("{0:s}", "21.03.2017 22:15:01") //output "2017-03-21T22:15:01"

value = formatString("{0:n}", 1000000);
//output "1.000.000"

value = formatString("{0:00}", 1);
//output "01"

UPDATE

String.format for Objects including specifiers

var fruit = new Fruit();
fruit.type = "apple";
fruit.color = "RED";
fruit.shippingDate = new Date(2018, 1, 1);
fruit.amount = 10000;

format("the {type:U} is {color:L} shipped on {shippingDate:s} with an amount of {amount:n}", fruit);
// output: the APPLE is red shipped on 2018-01-01 with an amount of 10.000

| Specifier | Result | | :-------------: |:---------------------------:| | L | LowerCase | | U | UpperCase | | d | ShortDatePattern | | s | SortableDateTimePattern | | n | Thousand seperator | | 00 | Padding numbers |

String.join():

var value = joinString("; ", "Apple", "Banana"); // or String.join()
//output: "Apple; Banana";

OR

 let object = { Name: "Foo", Value: "Bar" };
 var value = joinString('.', object);
//output: "Foo.Bar";

var array = ['Apple', 'Banana']
var value = joinString("; ", array);
//output: "Apple; Banana";

Methods

| Method | Type | Description | Parameter | | :------------------------:|:-----------:|:--------------------------:|:----------:| | empty | Property | simply returns "". | | isNullOrWhiteSpace | Method | returns true value if given parameter is either null, empty or undefined. | format, ...args | format/formatString | Method | Converts the value of objects to strings based on the formats specified and inserts them into another string. | format, ...args | join/joinString | Method | Combines arguments delimited by given seperator.| delimiter,...args | join/joinString | Method | Combines arguments delimited by given seperator from array. | delimiter,array |

StringBuilder

Just like you know from C#,

var favoriteFruit: string = this.fruitService.getFavorite(); //Blueberries

var builder = new StringBuilder("My favorite fruits are: ");
builder.Append("Apples, ");
builder.Append("Bananas ");

// using String.format() internally
builder.AppendFormat("and especially {0:U}!", favoriteFruit);
builder.AppendFormat(" I eat {0} every day!", 10);

var fruits = builder.ToString();

//output: "My favorite fruits are: Apples, Bananas and especially BLUEBERRIES! I eat 10 every day!";

Methods

| Method | Type | Description | Parameter | | :------------------------:|:-----------:|:--------------------------:|:----------:| | Append | Method | appends a string. | value | | AppendFormat | Method | see description for format()| format, args| | AppendLine | Method | appends a string in a new line. | format, args| | AppendLineFormat | Method | like format() in a new line | format, args| | Clear | Method | clears the StringBuilder | | | ToString | Method | creates the actual string. | |