How to convert array to string in javascript

Methods to convert arrays to strings in JavaScript: 1. Use the toString() function, which can convert each element in the array into a string, and then connect the output with commas. 2. Use the join() function, which converts all elements in the array into a string, and the elements are separated by the specified delimiter.

The operating environment of this tutorial: Windows 7 system, ECMAScript version 5, Dell G3 computer.

Convert javascript array to string

Method 1: Use toString() function

The toString() method converts a Number object into a string and returns the result. The syntax is as follows:

number.toString(radix)

The toString() method in the array can convert each element into a string, and then connect the output with commas for display

Example:

var arr = [1,2,3,4,5];  //定义数组
var str = arr.toString();;  
console.log(str); 
console.log("str的数据类型:"+typeof(str));

Output:

#toString() When converting an array into a string, first convert each element of the array into a character string. When each element is converted to a string, it is separated by commas and output as a list.

var a = [1,[2,3],[4,5],[6,[7,[8,9],0]]];  //定义多维数组
var s = a.toString();  //把数组转换为字符串
console.log(s);

Output:

[Recommended learning: js basic tutorial]

Method 2: Use the join() function

The join() method is used to convert all elements in the array into a string. Elements are separated by the specified delimiter. The syntax is as follows:

array.join(separator)

• separator: Optional. Specify the delimiter to use. If this parameter is omitted, a comma is used as the delimiter.

Return value:

• Returns a string. The string is generated by converting each element of the arrayObject to a string and then concatenating the strings, inserting the separator string between the two elements.

Note: The

join() method can convert an array into a string, but it can specify the delimiter. When calling the join() method, you can pass a parameter as a separator to join each element. If the parameter is omitted, comma is used as the delimiter by default, which has the same conversion effect as the toString() method.

Example:

var arr = [1,2,3,4,5];  //定义数组
var str = arr.join("");  //指定分隔符
console.log(str);  //返回字符串“12345”
console.log("str的数据类型:"+typeof(str));

Output:

For more programming-related knowledge, please visit: Programming Video! !

The above is the detailed content of How to convert array to string in javascript. For more information, please follow other related articles on the PHP Chinese website!