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The replace () method returns a new string with the value (s) replaced. The replace () method does not change the original string. If you replace a value, only the first instance will be replaced. To replace all instances, use a regular expression with the g modifier set.
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25 lip 2024 · The replace() method of String values returns a new string with one, some, or all matches of a pattern replaced by a replacement. The pattern can be a string or a RegExp, and the replacement can be a string or a function called for each match.
In this tutorial, you'll how to use JavaScript String replace() function to replace a substring in a string with a new one.
function replaceAll(str, find, replace) { var i = str.indexOf(find); if (i > -1){ str = str.replace(find, replace); i = i + replace.length; var st2 = str.substring(i); if(st2.indexOf(find) > -1){ str = str.substring(0,i) + replaceAll(st2, find, replace); } } return str; }
The replace () method in JavaScript is used to replace a part of a string with another string. It matches a pattern within the string using a string or regular expression and replaces it with a replacement string or a function. The original string is not modified.
JavaScript String replace () The replace() method returns a new string with the specified string / regex replaced. Example. const message = "ball bat"; // replace the first b with c let result = message.replace('b', 'c'); console.log(result); // Output: call bat. Run Code.
1 lip 2017 · The replace() method returns a new string with some or all matches of a pattern replaced by a replacement. The pattern can be a string or a RegExp, and the replacement can be a string or a function to be called for each match.
