JSON find the Last index of an object

JSON find the Last index of an object

In the following example, we will find the last index of an object in an array with a name property is equal to 'Danny'.

Example

HTML Editor
<!DOCTYPE html> <html lang="en-US"> <body> <h1>JSON findLastIndex</h1> <button onclick="myFunction()">Click Me</button> <script> var data = [ { "name": "Danny", "age": 25 }, { "name": "Mike", "age": 25 }, { "name": "Danny", "age": 18 } ] var myIndex = -1; function myFunction(){ for(var i = 0; i < data.length; i++){ if (data[i].name == "Danny") myIndex = i; } console.log(myIndex); } </script> </body> </html>

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