3636| 30| [ Private class methods and fields] ( #Private-class-methods-and-fields ) |
3737| 31| [ Preventing paste into an input field] ( #Preventing-paste-into-an-input-field ) |
3838| 32| [ The void operator] ( #The-void-operator ) |
39+ | 33| [ replaceAll] ( #replaceAll ) |
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@@ -660,8 +661,8 @@ pasteBox.onpaste = (e) => {
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662663**[⬆ Back to Top](#table-of-contents)**
663- ###The void operator
664- The void operator evaluates the given expression and then returns undefined .
664+ ###replaceAll
665+ the method string.replaceAll(search, replaceWith) replaces all appearances of search string with replaceWith .
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@@ -675,3 +676,43 @@ void anyfunction(); //returns undefined
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676677```
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679+
680+ **[⬆ Back to Top](#table-of-contents)**
681+ ### The void operator
682+ The void operator evaluates the given expression and then returns undefined.
683+ ```javascript
684+
685+
686+ const str = 'this is a JSsnippets example';
687+
688+ const updatedStr = str.replace('example', 'snippet'); // 'this is a JSsnippets snippet'
689+
690+
691+ The tricky part is that replace method replaces only the very first match of the substring we have passed:
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693+
694+ const str = 'this is a JSsnippets example and examples are great';
695+
696+ const updatedStr = str.replace('example', 'snippet'); //'this is a JSsnippets snippet and examples are great'
697+
698+ In order to go through this, we need to use a global regexp instead:
699+
700+
701+ const str = 'this is a JSsnippets example and examples are great';
702+
703+ const updatedStr = str.replace(/example/g, 'snippet'); //'this is a JSsnippets snippet and snippets are greatr'
704+
705+ but now we have new friend in town, replaceAll
706+
707+ const str = 'this is a JSsnippets example and examples are great';
708+
709+ const updatedStr = str.replaceAll('example', 'snippet'); //'this is a JSsnippets snippet and snippets are greatr'
710+
711+ ```
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