IE7 Array indexOf（）修复

Posted 2021-02-25

source: http://stellapower.net/content/javascript-support-and-arrayindexof-ie/
source: http://www.robsearles.com/2010/03/11/ie-7-indexof-replacement/

/* this will work in all browsers(no jQuery needed) */
if (!Array.indexOf) {
  Array.prototype.indexOf = function (obj, start) {
    for (var i = (start || 0); i < this.length; i++) {
      if (this[i] == obj) {
        return i;
      }
    }
    return -1;
  }
}
 
//call
var i = haystack_array.indexOf("needle")
 
 
 
 
/* or you can use jquery instead */
 
//call
var i = jQuery.inArray("needle", haystack_array)