JavaScript移除数组内重复元素的方法_javascript技巧
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2022-05-30 21:06:24
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本文实例讲述了JavaScript移除数组内重复元素的方法。分享给大家供大家参考。具体分析如下:
这段JS代码用于从数组中移除重复的元素,比如: ['apple', 'orange', 'peach', 'apple', 'strawberry', 'orange'] 去重后返回:s ['apple', 'orange', 'peach', 'strawberry']
复制代码 代码如下:
function removeDuplicates(arr) {
var temp = {};
for (var i = 0; i temp[arr[i]] = true;
var r = [];
for (var k in temp)
r.push(k);
return r;
}
//Usage
var fruits = ['apple', 'orange', 'peach', 'apple', 'strawberry', 'orange'];
var uniquefruits = removeDuplicates(fruits);
//print uniquefruits ['apple', 'orange', 'peach', 'strawberry'];
var temp = {};
for (var i = 0; i temp[arr[i]] = true;
var r = [];
for (var k in temp)
r.push(k);
return r;
}
//Usage
var fruits = ['apple', 'orange', 'peach', 'apple', 'strawberry', 'orange'];
var uniquefruits = removeDuplicates(fruits);
//print uniquefruits ['apple', 'orange', 'peach', 'strawberry'];
下面的代码可以在浏览器中验证
复制代码 代码如下:
Remove duplicate elements from an array.
Note 'orange' is duplicate in fruits array. Click to remove duplicate elements from fruits array:
var fruits = ['apple', 'orange', 'peach', 'apple', 'strawberry', 'orange'];
Note 'orange' is duplicate in fruits array. Click to remove duplicate elements from fruits array:
希望本文所述对大家的javascript程序设计有所帮助。