How to use the for of statement of JavaScript

This article mainly explains "how to use JavaScript's for of statement". The explanation content in this article is simple and clear, easy to learn and understand. Please follow the ideas of Xiaobian slowly and deeply to study and learn "how to use JavaScript's for of statement" together.

JavaScript for of statement loops over iterable object values

It allows you to loop through iterable data structures such as arrays, strings, maps, node lists, etc.:

syntax

for （variable of iterable） {

// code block to be executed

}

variable -For each iteration, the value of the next attribute is assigned to the variable. Variables can be declared with const, let, or var.

iterable -An object with iterable attributes.

walk the array

examples

const cars = ["BMW", "Volvo", "Mini"];

let text = "";

for （let x of cars） {

text += x;

}

give it a try

traversal string

examples

let language = "JavaScript";

let text = "";

for （let x of language） {

text += x;

}

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