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jQuery.inArray()

 Search for a specified value within an array and return its index (or -1 if not found).

• version added: 1.2jQuery.inArray( value, array [, fromIndex ] )

  • value
    Type: Anything
    The value to search for.
  • array
    Type: Array
    An array through which to search.
  • fromIndex
    Type: Number
    The index of the array at which to begin the search. The default is 0, which will search the whole array.

The <span style="color: #333333;">$.inArray()</span> method is similar to JavaScript’s native <span style="color: #333333;">.indexOf()</span> method in that it returns -1 when it doesn’t find a match. If the first element within the array matches <span style="color: #333333;">value</span>, <span style="color: #333333;">$.inArray()</span> returns 0.