Summary of using JavaScript string processing functions_javascript skills

1. Calculate the length of the string

Copy the code The code is as follows:

var txt="Hello World!"
document.write(txt.length)

2.indexOf() method

How to use indexOf () to locate the first occurrence of a specified character in a string.

Copy code The code is as follows:

3.match() method

searches for a specific character in a string, and if found, returns this character.

Copy code The code is as follows:

4. How to replace characters in a string - replace()
Use the replace() method to replace certain characters with other characters in a string.

Copy code The code is as follows: