regex remove space code example

Example 1: regular expression to remove empty lines after text

Find: ^(?:[\t ]*(?:\r?\n|\r))+
Replace: ""

Example 2: remove whitespace with regex javascript

return str.replace(/\s/g, '');

Example 3: regex to remove spaces

//..
return str.replace(/\s/g, '');
//..

Example 4: regular expression remove spaces

trim unnecessary whitespace