What are the ways to intercept strings in js

The js methods for intercepting strings include substring() method, substr() method, slice() method, split() method and slice() method. Detailed introduction: 1. The substring() method is used to intercept all characters from the starting index number to the ending index number in the string, but does not include the characters corresponding to the ending index number; 2. The substr() method is used with The substring() method is similar, and is also used to intercept the string from the starting index number to the ending index number, etc.

There are many ways to intercept strings in JavaScript. The following are some of the commonly used methods:

substring() method : This method is used to intercept all characters from the starting index number to the ending index number in the string, but does not include the characters corresponding to the ending index number.

var str = "Hello World";
var result = str.substring(0, 5); // 截取字符串 "Hello"

substr() method: This method is similar to the substring() method. It is also used to intercept all characters from the starting index number to the ending index number in the string, but The character corresponding to the terminating index number is not included.

var str = "Hello World";
var result = str.substr(0, 5); // 截取字符串 "Hello"

slice() method: This method is used to intercept all characters from the starting index number to the ending index number in the string, including the starting index number and the ending index number the corresponding character.

var str = "Hello World";
var result = str.slice(0, 5); // 截取字符串 "Hello"

split() method: This method is used to split a string into an array according to the specified delimiter. You can use the limit parameter to limit the length of the split array.

var str = "apple,banana,orange";
var result = str.split(",").slice(0, 2); // 截取数组中前两个元素 ["apple", "banana"]

slice() method: This method is used to extract a substring from a string and return a new string. You can use negative numbers as parameters to intercept from the end of the string.

var str = "Hello World";
var result = str.slice(-5); // 截取字符串 "orld"

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