Angular Find Substring in String
There are a few ways to find a substring in a string in Angular. Here are two of the most common methods:
Using the indexOf()
method
The indexOf()
method returns the index of the first occurrence of a substring in a string. If the substring is not found, it returns -1.
const str = 'This is a string';
const substring = 'is';
const index = str.indexOf(substring);
console.log(index); // Output: 2
Using the includes()
method
The includes()
method returns true
if a substring is found in a string, and false
if it is not.
const str = 'This is a string';
const substring = 'is';
const hasSubstring = str.includes(substring);
console.log(hasSubstring); // Output: true
Here is an example of how to use the indexOf()
method to find all occurrences of a substring in a string:
const str = 'This is a string with is in it twice';
const substring = 'is';
let index = str.indexOf(substring);
while (index !== -1) {
console.log(index);
index = str.indexOf(substring, index + 1);
}
This code will print the following output:
2
5
- Author: Ahmed Bouchefra Follow @ahmedbouchefra
-
Date:
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