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Showing posts from November, 2014

How to find index of an item in JavaScript Object Array?

Recently while working I came across a scenario. I had to find index of a particular item on given condition from a JavaScript object array. In this post we will see how to find index of object from JavaScript array of object. Let us assume we have a JavaScript array as following, Related :   Allow only characters in textbox using javascript in asp.net var studentsArray =[ {  "rollnumber": 1, "name": "dj", "subject": "physics" }, { "rollnumber": 2, "name": "krishna", "subject": "biology" }, { "rollnumber": 3, "name": "amit", "subject": "chemistry" },  ]; Now if we have a requirement to select a particular object in the array.  Let us assume that we want to find index of student with name Tanmay. We can do that by iterating through the array and comparing value at the given key. function functiontofindIndexByKeyValu...