javascript - 通过迭代，我需要使用 javascript 过滤特定单词，但我没有得到预期值？

Question

我只需要过滤类别类型，但我的代码返回定义的字符串。
我的预期输出是:家具沙发厨房。

var contextstr =
  'Lorem Ipsum is category:funiture dummy text of the printing and typesetting industry. Lorem Ipsum has been the industrys standard dummy text ever since category:sofa 1500s, when an unknown printer took a category:galley of type and scrambled it to make a type';

var count = 0;
while (true) {
  var findpos = contextstr.indexOf('category:', count);
  if (findpos == -1) break;
  var startpos = findpos + 9;
  var endpos = contextstr.indexOf(' ', startpos);
  var printcat = contextstr.substring(startpos + endpos);
  document.write(printcat + '<br>');
  //x++;
  count = endpos + 1;
}

Answer 1

试试这个:

var contextstr =
  'Lorem Ipsum is category:funiture dummy text of the printing and typesetting industry. Lorem Ipsum has been the industrys standard dummy text ever since category:sofa 1500s, when an unknown printer took a category:galley of type and scrambled it to make a type';

var splitArray = contextstr.split("category:");
splitArray.shift(); //Remove first item (Stuff right before first 'category:')
splitArray.forEach(split => {
  document.write(split.split(" ")[0] + '<br>');
});