padSrart padEnd

E6新增补充头和补充为

padSrart,padEnd

Posted by Lan on December 23, 2019

E6新增补充头和补充为

  • padStart() 用于头部补全；

  • padEnd() 用于尾部补全。

'abc'.padStart(13, '0123456789') // 0123456789abc

'abc'.padEnd(13, '0123456789') // abc0123456789
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