JSFiddle - React, Tailwind, and code Playground

HTML

原本截到100字:<div id="yo"></div>
新版偵測空白:<div id="here"></div>

JavaScript

var post = "It's the week running up to Halloween and parents across the US are attempting to carve intricate shapes out of the side of pumpkins - usually with limited artistic success. That is certainly not the case at Noel Dickover's dinner table in suburban Virginia. The father-of-two is a master pumpkin carver who creates hundreds of intricate designs of monsters, fantasy characters, and even the Death Star from Star Wars - check out his tutorial if you're in need of tips. The BBC spent an evening watching orange vegetables being turned into illuminated art. Produced by Ashley Semler and Franz Strasser; edited by Jonie Mazer Field First Person is a series of video features published every Monday on the BBC News website which tell the stories of unique individuals from all walks of life in their own words.";

var cut = post.indexOf(' ',100);
$("#yo").text(post.substring(0,100));
$("#here").text(post.substring(0,cut));