How to remove duplicate values from a string in javascript

How to remove duplicate string values in javascript: first open the corresponding front-end code file; then use the hash function of javascript to remove duplicate string values.

The operating environment of this article: Windows 7 system, javascript1.8.5, Dell G3 computer.

How to remove duplicate values from a string in javascript?

javascript removes repeated characters in a string

In javascript, the object is actually a hash table, the attribute name is the key of the hash table, and the value of the attribute is Hash table value.

See more at http://www.nowamagic.net/librarys/veda/detail/759

Use the natural hash function of javascript

The result is ["a ", "b", "d", "c"]

There is also a calculation of the number of occurrences

var str = "dog cat dog mouse dog cat"; function getFrequence(str){ var arr = str.split(" "); var result = {}; for(var i=0, len=arr.length; i
        

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Related video tutorial sharing:javascript advanced video

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