正则表达式不仅可以在两个特定符号之间匹配字符，还可以在单​​个符号之后匹配字符

Question

I'm using this regex:

/<([^>]*)>/g

for calculating the number of characters between < and > symbols using JavaScript, but I also need to count the number of characters added after a < but before closing the successive > when a user is typing.

For example:

<I need to count this> this not <this yes> and <also this

Answer 1

You could use <([^>]*) .

• Will capture any character but > occuring after a < .

Answer 2

Not purely a regex solution but you could do the following , this solution uses the forEach loop and also the match method.

var newArr = [];
str.match(/<([^>]+)/g).forEach( (e , i) => newArr.push( e.slice(1) ) ); // ["I need to count this", "this yes", "also this"]