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In order to change the characters at a specific position in a string in JavaScript, you can use the following two methods: convert the string to a character array, modify the characters, and then convert the array to a string. Use the charAt and replace methods to get the original character and replace it with the new character.
Change the value of a certain bit of a string in JavaScript
In order to change a specific position of a string in JavaScript characters at, you can use the following two methods:
Method 1: Character array
const characters = string.split("");
characters[index] = newCharacter;
const updatedString = characters.join("");
For example:
<code class="javascript">let string = "Hello"; // 更改第一个字符(索引为 0) const characters = string.split(""); characters[0] = "J"; const updatedString = characters.join(""); // 输出:Jello console.log(updatedString);</code>
Method 2: charAt and replace
const originalCharacter = string.charAt(index);
const updatedString = string.replace(originalCharacter, newCharacter);
For example:
<code class="javascript">let string = "World"; // 更改第三个字符(索引为 2) const originalCharacter = string.charAt(2); const updatedString = string.replace(originalCharacter, "e"); // 输出:Woeld console.log(updatedString);</code>
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