How to remove object from array of objects using JavaScript ?
Given a JavaScript array containing objects in and the task is to delete certain objects from array of objects. There are two approaches to solve this problem which are discussed below:
Approach 1:
- Use array.forEach() method to traverse every object of the array.
- For each object use delete obj.property to delete the certain object element from array of objects.
Example: This example implements the above approach.
<!DOCTYPE HTML> <html> <head> <title> Remove certain property for all objects in array with JavaScript. </title> </head> <body style="text-align:center;"> <h1 style="color: green"> GeeksForGeeks </h1> <p id="GFG_UP"></p> <button onclick="gfg_Run()"> Click Here </button> <p id="GFG_DOWN" style="color:green;"> </p> <script> var el_up = document.getElementById("GFG_UP"); var el_down = document.getElementById("GFG_DOWN"); var arr = [{ a: 'Val_1', b: 'Val_2' }, { a: 'Val_3', b: 'Val_4' }, { a: 'Val_1', b: 'Val_2' }]; el_up.innerHTML = "Click on the button to delete" + " certain property of object.<br>Array - " + JSON.stringify(arr); function gfg_Run() { arr.forEach(function(obj) { delete obj.a }); el_down.innerHTML = JSON.stringify(arr); } </script> </body> </html> |
Output:
- Before clicking the button:
- After clicking the button:
Approach 2:
- Use array.map() method to traverse every object of the array.
- For each object use delete obj.property to delete the certain object from array of objects.
Example: This example implements the above approach.
<!DOCTYPE HTML> <html> <head> <title> Remove certain property for all objects in array with JavaScript. </title> </head> <body style="text-align:center;"> <h1 style="color: green"> GeeksForGeeks </h1> <p id="GFG_UP"></p> <button onclick="gfg_Run()"> Click Here </button> <p id="GFG_DOWN"></p> <script> var el_up = document.getElementById("GFG_UP"); var el_down = document.getElementById("GFG_DOWN"); var arr = [{ a: 'Val_1', b: 'Val_2' }, { a: 'Val_3', b: 'Val_4' }, { a: 'Val_1', b: 'Val_2' }]; el_up.innerHTML = "Click on the button to delete" + " certain property of object.<br>Array - " + JSON.stringify(arr); function gfg_Run() { arr.map(function(obj) { delete obj.a; return obj; }); el_down.innerHTML = JSON.stringify(arr); } </script> </body> </html> |
Output:
- Before clicking on the button:
- After clicking on the button:
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