Javascript 从数组中获取唯一值

上面是我的代码， 我需要使用Javascript从该数组中获取唯一值

比如，我期望的是： 如果我要求独特的价值观，它应该让我：

var arr = ["THYROID","CARDIAC","CARDIAC,DIABETES","METABOLIC,ARTHRITIS","RENAL DISEASES,DIABETES","LIVER DISEASES,HEPATITIS","LIVER DISEASES,CANCER,METABOLIC","LIVER DISEASES,HEPATITIS,ARTHRITIS,METABOLIC"]

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如果您有一个字符串数组，您可以使用这些字符串作为键创建一个对象，然后从该对象获取键

创建对象

var arr = ["THYROID","CARDIAC","DIABETES","METABOLIC","RENAL DISEASES","LIVER DISEASES,"CANCER",ARTHRITIS","HEPATITIS"]

for (var t = {}, i = 0; i < arr.length; i++) 
  t[arr[i]] = 0;

// Modern browsers only
arr = Object.keys(t);

// In older browsers you can use the polyfill from the link below,
// or just loop through the object like this:
arr = [];
for (var k in t)
  arr.push(k);