如何在JavaScript中檢查字串是否包含子字串?

摘要： 這裡有一個可用方法列表: (ES6) includes var string = "foo", substring = "oo"; string.includes(substring); ...

這裡有一個可用方法列表:

1. (ES6) includes

var string = "foo",
substring = "oo";
string.includes(substring);

1. ES5 and older indexOf

var string = "foo",
substring = "oo";
string.indexOf(substring) !== -1;
String.prototype.indexOf returns the position of the string in the other string. If not found, it will return -1.

1. search

var string = "foo",
expr = /oo/;
string.search(expr);

1. lodash includes

var string = "foo",
substring = "oo";
_.includes(string, substring);

1. RegExp

var string = "foo",
expr = /oo/;// no quotes here
expr.test(string);

1. Match

var string = "foo",
expr = /oo/;
string.match(expr);

效能測試表明，如果速度很重要，indexOf可能是最好的選擇。

轉載請註明出處

：

http://zgljl2012.com/ru-he-zai-javascriptzhong-jian-cha-zi-fu-chuan-shi-fou-bao-han-zi-zi-fu-chuan/