为每一行添加一个字符

Question

我有这种格式的文字

 Man like dog.
 Man like to drink.
 Man is the king

我想添加一个字符说????到上面文本中的每一行，以便输出看起来像：

 ????Man like dog.
 ????Man like to drink.
 ????Man is the king

你能帮我怎么做吗？

Answer 1

将文本存储在数组中，您可以像这样修改数组的每个元素

var text = ['Man like dog.', 'Man like to drink.', 'Man is the king.'];

console.log(text.join('\n'));

text = text.map(function(element){ return '????' + element;});

console.log(text.join('\n'));

Answer 2

您可以使用常规表达式（.replace(/^/gm, '????')）执行此操作：

> str = "Man like dog.\nMan like to drink\nMan is the king."
'Man like dog.\nMan like to drink\nMan is the king.'
> str = str.replace(/^/gm, '????')
'????Man like dog.\n????Man like to drink\n????Man is the king.'
> console.log(str)
????Man like dog.
????Man like to drink
????Man is the king.

Answer 3

假设您输入了要处理的字符串（具有换行符分隔符）

var array = input.split(/\n/);

var newArray = [];
array.forEach( function(element){

   newArray.push( "????" + element );

} );
console.log( newArray );