JavaScript Symbol replace Property

JavaScript Symbol replace Property with examples on javascript symbol methods, javascript symbol property, javascript tutorial, hasInstance, isConcatSpreadable, match, prototype, search, for(), keyFor(), toString(), unscopables, toPrimitive, split etc.

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JavaScript Symbol.replace Property

The JavaScript Symbol.replace symbol determine the method that replaces the matched substring of a string.

Syntax

[Symbol.replace](string).

Parameters

String.

Return value

A new string.

Browser Support

Chrome	32
Safari	8
Firefox	29
Opera	19

Example 1

<script>
class Rep {
  constructor(value) {
    this.value = value;
  }
  [Symbol.replace](string) {
    return `${string}`;
  }
}
var r=new Rep("java");
document.writeln("Before: "+r.value);
document.writeln("After: "+"TheDeveloperBlog".replace(r.value));
</script>

Test it Now

Output:

Before: java
After: TheDeveloperBlog

Example 2

<script>
class Rep {
  constructor(value) {
    this.value = value;
  }
  [Symbol.replace](string) {
    return `${string}`;
  }
}
var r=new Rep("TheDeveloperBlog");
document.writeln("Before: "+r.value);
document.writeln("After: "+r.value.toUpperCase().replace(r.value));
</script>

Test it Now

Output:

Before: TheDeveloperBlog
After: JAVATPOINT

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