JavaScript Symbol search Property

JavaScript Symbol search property determines the method that returns the index within a string that matches the regular expression. This function is called by the String search() method.

Syntax:

[Symbol.search](string)

Parameters: It accepts single parameter “String”.

Return value: This returns the position of a string where it matches and if not matches it will return -1.

Below examples illustrate the Symbol search property in JavaScript:

Example 1:

<script> 
// JavaScript example to illustrate 
// Symbol.search property 
class obj { 
    constructor(value) { 
            this.value = value; 
        } 
        [Symbol.search](string) { 
            return string.indexOf(this.value); 
        } 
} 
  
console.log('w3wiki'.search(new obj('Geek'))); 
console.log('w3wiki'.search(new obj('geek'))); 
</script>

Output:

0
8

Example 2:

<script> 
// JavaScript program to illustrate 
// the Symbol.search property 
class S { 
    constructor(value) { 
            this.value = value; 
        } 
        [Symbol.search](string) { 
            return string.indexOf(this.value); 
        } 
} 
console.log('w3wiki'.search(new S('geek'))); 
console.log('w3wiki'.search(new S('Geek'))); 
</script>

Output:

-1
-1

Supported Browsers: The browsers supported by Symbol search property are listed below:

Google Chrome 50 and above
Firefox 49 and above
Edge 79 and above
Opera 37 and above
Apple Safari 10 and above

We have a complete list of Javascript symbols’ properties and methods, to check those please go through the Javascript Symbol Complete Reference article.

Tags:

#JavaScript-Properties #JavaScript-Symbol #JavaScript #Web Technologies

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