|
JavaScript: IndexOf sanity checkIndexOf returns the position in a data type or structure where the first occurence of a passed-in argument appears. If no occurence is found, it returns "-1". Before embracing regular expressions, I used this heavily for assessing strings. However, a friend reminded me recently that this method works with arrays as well as strings** With an array, the method returns the index of the array item where the value occurs. In a string, it's the character position.Here's the caveat...it doesn't appear to work in IE. Here's a quick test to demonstrate how it works (or fails) in your browser of choice... Examples: |
