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Replacing All Occurrences of a String in JavaScript
In JavaScript, the string.replace() method is used to replace occurrences of a substring. However, by default, it only replaces the first occurrence. To replace all occurrences, you need to use a regular expression with the g flag.
<code class="javascript">string = "Test abc test test abc test test test abc test test abc"; string = string.replace(/abc/g, ''); // replaces all occurrences of "abc" with ""</code>
Alternative (legacy browsers):
For older browsers that do not support the g flag, you can use the following function to replace all occurrences of a string:
<code class="javascript">function replaceAll(str, find, replace) { return str.replace(new RegExp(find, 'g'), replace); }</code>
Handling Special Characters:
Note that special characters in the find string need to be escaped using the escapeRegExp() function to prevent them from being interpreted as part of the regular expression.
<code class="javascript">function escapeRegExp(str) { return str.replace(/[.*+?^${}()|[\]\]/g, '\$&'); } function replaceAll(str, find, replace) { return str.replace(new RegExp(escapeRegExp(find), 'g'), replace); }</code>
By using the g flag and handling special characters properly, you can replace all occurrences of a string in JavaScript effectively.
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