String.prototype.substring() — Replacing a substring within a string
The following example replaces a substring within a string. It will replace both individual characters and substrings. The function call at the end of the example creates a string Brave New Web from the original string Brave New World. Note that this can result in an infinite loop if oldS is itself
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The following example replaces a substring within a string. It will replace both individual characters and substrings. The function call at the end of the example creates a string Brave New Web from the original string Brave New World.
Note that this can result in an infinite loop if oldS is itself a substring of newS — for example, if you attempted to replace "World" with "OtherWorld" here.
A better method for replacing strings is as follows
The code above serves as an example for substring operations. If you need to replace substrings, most of the time you will want to use {{jsxref("String.prototype.replace()")}}.
Attribution: Adapted from MDN Web Docs under CC-BY-SA-2.5. Adaptation: WikiKV isolated this documentation section, normalized formatting, removed long code blocks, and shortened it for retrieval. Verify version-sensitive details at the source.
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MDN Web Docs — files/en-us/web/javascript/reference/global_objects/string/substring/index.md :: Replacing a substring within a string ↗Revision d14bee540b53 · CC-BY-SA-2.5