Javascript 尝试检索所有前导的大写字符，这些字符前面带有空格、连字符、撇号或字符串开头

正在尝试检索所有前导大写字符，前面带有空格、连字符、撇号或字符串开头

示例：

var text = "This is a sample about about JJohnny Apple-Seed and old Mc'Donald.";
text.match(/[A-Z]/g)  // returns  -->  ["T", "J", "J", "A", "S", "M", "D"]

var str = "This is a story about JJohnny Apple-Seed and Old Mc'Donald.";
var myRe = /\b([A-Z])/g;

var myArray;
while ((myArray = myRe.exec(str)) !== null)
{
  var msg = "Found " + myArray[0] + ".  ";
  msg += "Next match starts at " + myRe.lastIndex-1;
  console.log(msg);
}

所需输出：

[“T”、“J”、“A”、“S”、“M”、“D”]

更新的最终解决方案：

var text = "This is a sample about about JJohnny Apple-Seed and old Mc'Donald.";
text.match(/[A-Z]/g)  // returns  -->  ["T", "J", "J", "A", "S", "M", "D"]

var str = "This is a story about JJohnny Apple-Seed and Old Mc'Donald.";
var myRe = /\b([A-Z])/g;

var myArray;
while ((myArray = myRe.exec(str)) !== null)
{
  var msg = "Found " + myArray[0] + ".  ";
  msg += "Next match starts at " + myRe.lastIndex-1;
  console.log(msg);
}

---

标准的

\b

（单词边界）元字符应该可以帮助您实现：

text.match(/\b([A-Z])/g)

给出：

["T", "J", "A", "S", "M", "D"]