How js fills a string to a specified length

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How to fill a string to a specified length

Sometimes we want the string to have a specific length. If the string is too short, the remaining space needs to be filled until the specified length is reached.

In the past, the library left-pad was mainly used. Today, however, we can use the padStart and SpadEnd methods, depending on whether to populate the string at the beginning or end of the string.

/ / add "0" at the beginning until the length of the string is 8.

/ / add "0" at the beginning until the length of the string is 8. Const eightBits = '001'.padStart (8,' 0') console.log (eightBits) / / "00000001" / / add "*" at the end until the length of the string is 5. Const anonymizedCode = "34" .padEnd (5, "*") console.log (anonymizedCode) / / "34 strings filled *" above is all the content of the article "how to fill a string to a specified length by js". Thank you for reading! I believe we all have a certain understanding, hope to share the content to help you, if you want to learn more knowledge, welcome to follow the industry information channel!