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edited Jun 13, 2019 at 23:02

edited Jun 13, 2019 at 23:02

There is a very simple way to implement it by replace. For ES6For ECMAScript 6:

'foo'.replace(/^./, str => str.toUpperCase())

resultResult:

'Foo'

There is a very simple way to implement it by replace. For ES6:

'foo'.replace(/^./, str => str.toUpperCase())

result:

'Foo'

There is a very simple way to implement it by replace. For ECMAScript 6:

'foo'.replace(/^./, str => str.toUpperCase())

Result:

'Foo'

deleted 3 characters in body

edited Nov 15, 2018 at 11:36

edited Nov 15, 2018 at 11:36

There is a very simple way to implement it by replace. Only JS For ES6:

'foo'.replace(/^./, str => str.toUpperCase())

result:

'Foo'

There is a very simple way to implement it by replace. Only JS ES6:

'foo'.replace(/^./, str => str.toUpperCase())

result:

'Foo'

There is a very simple way to implement it by replace. For ES6:

'foo'.replace(/^./, str => str.toUpperCase())

result:

'Foo'

answered Nov 8, 2018 at 8:31

answered Nov 8, 2018 at 8:31

There is a very simple way to implement it by replace. Only JS ES6:

'foo'.replace(/^./, str => str.toUpperCase())

result:

'Foo'

lang-js