How to remove the last character from es6 string

Method: 1. Use "[...str]" or "Array.from(str)" to convert the string into a character array; 2. Use "arr.pop()" or "arr. splice(-1,1)" to delete the last element of the array; 3. Use "arr.join("")" to convert the processed array back to a string.

The operating environment of this tutorial: Windows 7 system, ECMAScript version 6, Dell G3 computer.

Remove the last character from an es6 string

In es6, if you want to remove the last character from a string, you can use an array

1. First use the spread operator "..." or Array.from() to convert the string into a character array

var str = "abcdefg1234567"
var arr1=[...str];
var arr2=Array.from(str);
console.log(arr1);
console.log(arr2);

2. Delete the last element of the character array

You can use the pop() function

var str = "abcdefg1234567"
var arr1=[...str];
console.log(arr1);
console.log(arr1.pop());
console.log(arr1);

You can also use the splice() function

var str = "abcdefg1234567"
var arr1=[...str];
console.log(arr1);
arr1.splice(-1,1);
console.log(arr1);

3. Convert the processed array back to a string

var s =arr1.join("");  //指定分隔符
console.log(s);  //返回字符串

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