英文をメソッド名にするやつ(ローワーキャメルケース)

lcc.js

var select = window.getSelection().toString();
var text = (select.length > 0)? select: document.querySelector("span.gt-card-ttl-txt").innerText; // Google Translate
var words = text.split(" ");
var methodName = "";
for (var i = 0, l = words.length; i < l; i++) {
  var word = words[i];
  if (word.length === 0) {
    continue;
  }

  if (i === 0) {
    word = word.toLowerCase();
  } else {
    word = word[0].toUpperCase() + word.slice(1, word.length);
  }

  methodName += word;
}
alert(methodName);