In this tutorial, we will learn about String in JavaScript. In Strings are normally defined as a sequence of character. For example “Owlbuddy” Yes you can say “Owlbuddy” is a String in the programming language. There are two ways to define String in JavaScript:
- Using String literal
- Using String object
Now we will check each way to create and we will try to understand it with the help of examples.
Using String literal:
In this method, we directly write var keyword and then literal for string and then we write a string in double quotes(” “). Follow this example to get a clear idea about this method.
<script>
var str="Welcome To Owlbuddy";
document.write(str);
</script>
Using String object:
In this method, we create String object using new keyword and then we pass a string in Object. Check the following example.
<script>
var str=new String("Welcome to Owlbuddy.");
document.write(str);
</script>
Basic string Methods:
Here we will check some basic string Methods. That will help you so much while working with Strings
| Method | Description |
|---|---|
| charAt() | It is use to check char at particular index. |
| concat() | It is use to concat two strings. |
| indexOf() | It is use to find index of character in String. |
| lastIndexOf() | It is use to find lat index of character n string. |
| search() | It is use to search regular expression from string. |
| replace() | It is use to replace part of string with some other char squence |
| substr() | It is use to get sub string from big string. |
| toLowerCase() | It converts whole string into lower case letters. |
| toUpperCase() | It converts whole string into upper case letters. |
| toString() | It return string form an object. |
| valueOf() | Provide primitive value of String object. |