如何测试字符串是否依次包含多个定义的单词？

Question

I have a string and need to test whether multiple defined words are included in order.

For example the predefined words are: ["one", "two", "three"]

So a string with: "one two three" should return true but a string with: "three two one" should return false.

My current regex looks like this: new RegExp('\\\\bone\\\\b\\\\two\\\\b\\\\three\\\\b')

Unfortunately this just checks if the words are present but doesn't care if they are in the right order.

Answer 1

You can just use this regex

var arr = ["one", "two", "three"];
var regex = new RegExp(arr.join(".*"));

arr.join(".*") will make a regex /one.*two.*three/

Answer 2

You can use the following regular expression.

var re = /one.*two.*three/

Example:

re.test('one two three'); // true
re.test('three two one'); // false

Answer 3

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