Javascript, what does the 1 in slice(1) refer to in this program?

In this program, I understand (I think) that paragraph.charAT(0) = "%" checks whether the first character in paragraph is equal to %, i.e. the counting starts at 0, so charAT(0) is the first character

However, in the line, paragraph.slice(1), what does the 1 refer to? Is it slicing off the first character?, which in this case will be at 0 position?

function processParagraph(paragraph) {
  var header = 0;
  while (paragraph.charAt(0) == "%") {
    paragraph = paragraph.slice(1);
    header++;
  }

  return {type: (header == 0 ? "p" : "h" +开发者_StackOverflow中文版 header),
          content: paragraph};
}

show(processParagraph(paragraphs[0]));

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It extracts a substring starting at index 1 (2nd character) of the paragraph string.

For example, consider this:

var paragraph = "Hi my name is Russell";
console.log( paragraph.slice(1) ); //returns 'i my name is Russell'

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.slice

string.slice(beginslice[, endSlice])

Extracts a section of a string and returns a new string.

It returns everything after the first character, essentially cutting the first character off.

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It removes the first character from the string and returns that without altering the original string. I recommend you look at the documentation for slice.

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it's slicing off the first character (which is a "%")