Spinal Tap Case

spinalCase.js

function spinalCase(str) {
  // "It's such a fine line between stupid, and clever."
  // --David St. Hubbins
  var inputArr = [];
  var splitIndex = [];
  if (str.indexOf(" ") > - 1){
    inputArr = str.split(" ");
  }else if (str.indexOf("_") > - 1){
    inputArr = str.split("_");
  }else{
    // detect uppercase letters position
    for (var j=0;j<str.length;j++){
      if (str[j] === str[j].toUpperCase()){
        splitIndex.push(j);
      }
    }
    // form array
    for (var k=0;k<splitIndex.length;k++){
      var start = 0;
      if (k === 0){
        start = 0;
      }else{
        start = splitIndex[k-1];
      }
      inputArr.push(str.slice(start,splitIndex[k]));
      if (k == splitIndex.length-1){
        inputArr.push(str.slice(splitIndex[k],str.length));
      }
    }
  }
  var dash = "-";
  var output = inputArr[0].toLowerCase();
  for (var i=1;i<inputArr.length;i++){
    inputArr[i] = inputArr[i].toLowerCase();
    output = output.concat(dash).concat(inputArr[i]);
  }
  return output;
}

spinalCase('thisIsSpinalTap');

SpinalTapCase.markdown

Spinal Tap Case

Converts a string to spinal case. Spinal case is all-lowercase-words-joined-by-dashes.

A script by V.

License.