How to convert string to string array in javascript

In JavaScript, you can use the split() method of a string to convert a string into a string array. This method can split the string into a string array according to the specified delimiter; the syntax format is "string .split(separator)", the separator can be empty or null character.

The operating environment of this tutorial: windows7 system, javascript version 1.8.5, Dell G3 computer.

In JavaScript, you can use the split() method of string to convert a string into a string array.

The split() method is used to split a string into a string array.

Syntax

string.split(separator,limit)

If an empty string ("") is used as a separator, each character in the string will be split.

Return value: a string array.

Example: Convert string to string array

var str="Hello World !";
console.log(str.split(" "));
console.log(str.split(""));

Output:

Example:If the parameter is a regular expression, the split() method can split the matching text as the delimiter.

var str="Hello World !";
console.log(str.split(" "));
console.log(str.split(""));var s = "a2b3c4d5e678f12g";
var a = s.split(/\d+/);  //把以匹配的数字为分隔符来切分字符串
console.log(a);  //返回数组[a,b,c,d,e,f,g]
console.log(a.length);  //返回数组长度为7

Example:

If the text matched by the regular expression is located at the edge of the string, the split() method also performs the splitting operation and adds a Empty array.

var s = "122a2b3c4d5e678f12g";
var a = s.aplit(/\d+/);
console.log(a);
console.log(a.length);

If the specified delimiter is not found in the string, an array containing the entire string is returned.

Example:

The split() method supports a second parameter, which is an optional integer used to specify the maximum length of the returned array. . If this parameter is set, the length of the returned array will not be greater than the value specified by this parameter; if this parameter is not set, the entire string will be split without considering the array length.

var s = "JavaScript";
var a = s.split("", 4);  //按顺序从左到右，仅分切4个元素的数组
console.log(a);  //返回数组[J,a,v,a]
console.log(a.length);  //返回值为4

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