正则表达式获取两个字符之间的文本？

Question

I want to replace a text after a forward slash and before a end parantheses excluding the characters.

My text: 
<h3>notThisText/IWantToReplaceThis)<h3>

$('h3').text($('h3').text().replace(regEx, 'textReplaced'));

Wanted result after replace:
notThisText/textReplaced) 

I have tried

regex = /([^\/]+$)+/ //replaces the parantheses as well 
regex = \/([^\)]+) //replaces the slash as well 

but as you can see in my comments neither of these excludes both the slash and the end parantheses. Can someone help?

Answer 1

A pattern like /(?<=\\/)[^)]+(?=\\))/ won't work in JS as its regex engine does not support a lookbehind construct. So, you should use one of the following solutions:

s.replace(/(\/)[^)]+(\))/, '$1textReplaced$2')
s.replace(/(\/)[^)]+(?=\))/, '$1textReplaced')
s.replace(/(\/)[^)]+/, '$1textReplaced')
s.replace(/\/[^)]+\)/, '/textReplaced)')

The (...) forms a capturing group that can be referenced to with $ + number, a backreference, from the replacement pattern. The first solution is consuming / and ) , and puts them into capturing groups. If you need to match consecutive, overlapping matches, use the second solution ( s.replace(/(\\/)[^)]+(?=\\))/, '$1textReplaced') ). If the ) is not required at the end, the third solution ( replace(/(\\/)[^)]+/, '$1textReplaced') ) will do. The last solution ( s.replace(/\\/[^)]+\\)/, '/textReplaced)') ) will work if the / and ) are static values known beforehand.

Answer 2

var text = "notThisText/IWantToReplaceThis";
text = text.replace(/\/.*/, "/whatever");
output : "notThisText/whatever"`

Answer 3

You can use str.split('/')

var text = 'notThisText/IWantToReplaceThis';
var splited = text.split('/');
splited[1] = 'yourDesireText';
var output = splited.join('/');
console.log(output);

Answer 4

Try Following: In your case startChar='/', endChar = ')', origString=$('h3').text()

function customReplace(startChar, endChar, origString, replaceWith){
var strArray = origString.split(startChar);
return strArray[0] + startChar + replaceWith + endChar;
}

Answer 5

First of all, you didn't define clearly what is the format of the text which you want to replace and the non-replacement part. For example,

• Does notThisText contain any slash / ?
• Does IWantToReplaceThis contain any parentheses ) ?

Since there are too many uncertainties, the answer here only shows up the pattern exactly matches your example:

yourText.replace(/(\/).*?(\))/g, '$1textReplaced$2')