Remove all spaces in a string
function trim(str) { return str.replace(/\s*/g, ''); } console.log('=' + trim(' Hello World ! ') + '='); // =HelloWorld!=
Removing spaces to the string
function trimBothSides(str) { return str.replace(/^\s*|\s*$/g, ''); } console.log('=' + trimBothSides(' Hello World! ') + '='); // =Hello World!=
console.log('=' + ' Hello World ! '.trim() + '='); // =Hello World !=
Remove the string of spaces to the left of
function trimLeft(str) { return str.replace(/^\s*/, ''); } console.log('=' + trimLeft(' Hello World! ') + '='); // =Hello World! =
console.log('=' + ' Hello World ! '.trimLeft() + '='); // =Hello World ! =
White spaces to the right of the string
function trimRight(str) { return str.replace(/\s*$/, ''); } console.log('=' + trimRight(' Hello World! ') + '='); // = Hello World!=
console.log('=' + ' Hello World ! '.trimRight() + '='); // = Hello World !=