从数组中删除重复的项目 [英] Remove duplicate item from array Javascript

问题描述

我正在寻找一种从数组中删除重复值的简单方法。我想出了如何检测是否有重复，只是我不知道如何推它的价值。例如，如果您转到提供的链接，然后键入abca （每个字母后按回车/回车键） ，将会提示重复！

但是我也想弄清楚如何从textarea中删除那个重复的内容？

http://jsfiddle.net/P3gpp/

这似乎是不要工作::

  sort = sort.push（i）; 
 textVal = sort; 
返回textVal; 
  

解决方案

为什么这么难呢，可以做到更容易使用JavaScript过滤功能，这是特别针对这种类型的操作：

$ $ p $ var c arr = [苹果，bannana ，橙，苹果，橙];
$ b $ arr = arr.filter（function（item，index，inputArray）{
return inputArray.indexOf（item）== index;
}）;


---------------------
输出：[apple，bannana，orange ]

I'm looking for an easy way of removing a duplicate value from an array. I figured out how to detect if there is a duplicate or not, just I don't know how to "push" it from the value. For example, if you go to the link provided, and then type, "abca" (press return/enter key after each letter).. it will alert "duplicate!"

But I also want to figure out how to remove that duplicate from the textarea?

http://jsfiddle.net/P3gpp/

This is the part that seems to not be working ::

sort = sort.push(i);
textVal = sort;
return textVal;

解决方案

Why do it the hard way, it can be done more easily using javascript filter function which is specifically for this kind of operations:

var arr = ["apple", "bannana", "orange", "apple", "orange"];

arr = arr.filter( function( item, index, inputArray ) {
           return inputArray.indexOf(item) == index;
    });


---------------------
Output: ["apple", "bannana", "orange"]

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