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I have an array of objects:
[{"value":"14","label":"7"},{"value":"14","label":"7"},{"value":"18","label":"7"}] How I can delete this item {"value":"14","label":"7"} resulting in the new array:
[{"value":"14","label":"7"},{"value":"18","label":"7"}] ?
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To remove a property from all objects in an array:Use the Array. forEach() method to iterate over the array. On each iteration, use the delete operator to delete the specific property. The property will get removed from all objects in the array.
In C++, the single object of the class which is created at runtime using a new operator is deleted by using the delete operator, while the array of objects is deleted using the delete[] operator so that it cannot lead to a memory leak.
To remove an object from an array by its value:Call the findIndex() method to get the index of the object in the array. Use the splice() method to remove the element at that index. The splice method changes the contents of the array by removing or replacing existing elements.
We can use the following JavaScript methods to remove an array element by its value. indexOf() – function is used to find array index number of given value. Return negavie number if the matching element not found. splice() function is used to delete a particular index value and return updated array.
In ES6 (or using es6-shim) you can use Array.prototype.findIndex along with Array.prototype.splice:
arr.splice(arr.findIndex(matchesEl), 1); function matchesEl(el) { return el.value === '14' && el.label === '7'; } Or if a copy of the array is ok (and available since ES5), Array.prototype.filter's the way to go:
var withoutEl = arr.filter(function (el) { return !matchesEl(el); }); If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
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