Find substring position into string with Javascript

Question

I have the following strings

"www.mywebsite.com/alex/bob/a-111/..."
"www.mywebsite.com/alex/bob/a-222/..."
"www.mywebsite.com/alex/bob/a-333/...".

I need to find the a-xxx in each one of them and use it as a different string. Is there a way to do this? I tried by using indexOf() but it only works with one character. Any other ideas?

Answer 1

You can use RegExp

 var string = "www.mywebsite.com/alex/bob/a-111/..."; var result = string.match(/(a-\\d+)/); console.log(result[0]); 

or match all values

 var strings = "www.mywebsite.com/alex/bob/a-111/..." + "www.mywebsite.com/alex/bob/a-222/..." + "www.mywebsite.com/alex/bob/a-333/..."; var result = strings.match(/a-\\d+/g) console.log(result.join(', ')); 

Answer 2

Use the following RegEx in conjunction with JS's search() API

/(a)\-\w+/g

Reference for search(): http://www.w3schools.com/js/js_regexp.asp

Answer 3

var reg=/a-\d{3}/;
text.match(reg);