eligendiodit/src/indexOf.js

A powerful javascript functions library!

var isObj = require('./isObj');
var isFun = require('./isFun');
var keys = require('./keys');

/**@function*/

/**
 * [fn.indexOf] 寻找值在数组中的索引
 * @param srcArr    : array|string
 * @param predicate : object|function|any
 */
function indexOf(srcArr, predicate) {
  for (var i = 0; i < srcArr.length; i++) {
    if (isObj(predicate)) {
      if (keys(predicate).every(
        function (k) { return srcArr[i][k] === predicate[k]; })
      ) return i;
    } else if (isFun(predicate)) {
      if (predicate(srcArr[i])) return i;
    }
  }
  return srcArr.indexOf(predicate);
}

/**@function*/
module.exports = indexOf;