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Delete objects from a Javascript table

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[前端(javascript) 所属分类 前端(javascript) | 发布者 店小二04 | 时间 2018 | 作者 红领巾 ] 0人收藏点击收藏

I am trying to remove an object from an array if a particular value for a key matches a given string:

Example data:

array = [{_id: "abc", test: "123"}, {_id: "def", test: "123"}, {_id: "ghi", test: "123"}];

Here is my loop:

for (var i = 0; i < array.length; i++) { var x = "123" if (array[i].test == x) { array.splice(i, 1) } }

This should return an empty array but it's leaving one object in the array (the last one) and I've got no clue why.

You must not increment i if you remove an element.

Suppose the array has two matching elements.

The first iteration, i = 0

i ==>> element 1 element 2

You then remove element 1, and increment i

element 2 i ==>>

There are many ways you can correct this. Here's an example that replaces your for loop with a while loop.

var i = 0; while (i < array.length) { var x = "123" if (array[i].test == x) { array.splice(i, 1) } else { ++i; } }

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