How to replace the specified position with replace () in js

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Usage

Str.replace (regexp/substr, text/function)

instructions

The first parameter is the query condition, which can be a string or a regular expression.

The second parameter is the replacement rule, which can be a string or a function of a string to replace the string to which the query condition matches.

Returns a new string that is obtained after replacing the first match or all matches of regexp with replacement.

Use an example

Replace the specified position with replace () in js: concatenate the string to be replaced before and after with the string to be replaced

Var strobj = 'ABCDEFGABEF';// wants to replace the EF in position 4 and 5 without moving the EF endstr=replacepos (strobj,4,5,'344'); console.log (endstr); / / ABCD344GABED; function replacepos (text,start,stop,replacetext) {mystr = text.substring (0meme Strom 1) + replacetext+text.substring (stop+1); return mystr } the above is about the content of this article on "how to replace a specified location with replace () in js". I believe everyone has a certain understanding. I hope the content shared by the editor will be helpful to you. If you want to know more about the relevant knowledge, please follow the industry information channel.