当我处理它时，如何确保包含具有某些字符的值的Javascript数组保持不变？

Question

Suppose I have an Javascript array,

var example = [and, there,sharma<br, />, ok, grt]

Now I want to randomly delete some array values - but not those values which have

<br

in them, in the above example, I want to make sure

"sharma<br" is not deleted.

I also do not want to delete "/>".

Can anyone help me. I would really appreciate the answer.

Answer 1

First of all, that is not a valid array, unless you are missing the string quotes. Anyway, what you are searching for is Array.Filter . In your case :

var filtered = example.filter(v => v.indexOf("<br") != -1 || v.indexOf("/>") != -1)

Answer 2

If I have understood the problem correctly, then you want to keep those entries in the array which have substrings "<br" and "/>"

If thats the case, you can try using javascript string method includes() to see if a string contains a particular substring.

Answer 3

JavaScript array must be created as below

var example = ["and"," there"",sharma<br","/>","ok"," grt"];

Using splice method , to delete the array values specifying the index positions.

array splice() method changes the content of an array, adding new elements while removing old elements.

Syntax Its syntax is as follows −

array.splice(index, howMany, [element1][, ..., elementN]);

Parameter Details

index − Index at which to start changing the array.

howMany − An integer indicating the number of old array elements to remove. If howMany is 0, no elements are removed.

element1, ..., elementN − The elements to add to the array. If you don't specify any elements, splice simply removes the elements from the array.

Return Value Returns the extracted array based on the passed parameters.

var removed = arr.splice(2, 2);

This would remove your suggested output to be my assumption .