6.5 String Methods

6.5 String Methods String Length Searching for a String in a String Practice

6.5 String Methods

String Length

💡

Not a method, but in the same ballpark.

The length property returns the length of a string:

The indexOf method returns the index of (the position of) the first occurrence of a specified text in a string:


let str = "Please locate where 'locate' occurs!";
let pos = str.indexOf("locate");

The lastIndexOf method returns the index of the last occurrence of a specified text in a string:


let str = "Please locate where 'locate' occurs!";
let pos = str.lastIndexOf("locate");

Both indexOf(), and lastIndexOf() return -1 if the text is not found.


let str = "Please locate where 'locate' occurs!";
let pos = str.lastIndexOf("John");

Searching for a String in a String

The search method searches a string for a specified value and returns the position of the match:


let str = "Please locate where 'locate' occurs!";
let pos = str.search("locate");

Practice

You can add practice problems here if you want. Follow the format below.

💻 Template code

✅ Solution code

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6.6 Number Methods

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