how to check if a string contains only spaces in javascript
let str = " ";
if (!str.replace(/\s/g, "").length) {
console.log("string only contains whitespace (ie. spaces, tabs or line breaks)");
}how to check if a string contains only spaces in javascript
let str = " ";
if (!str.replace(/\s/g, "").length) {
console.log("string only contains whitespace (ie. spaces, tabs or line breaks)");
}javascript regex only letters and spaces
//regex expression:
var reg_name_lastname = /^[a-zA-Z\s]*$/;
//Validation to the user_name input field
if(!reg_name_lastname.test($('#user_name').val())){ //
alert("Correct your First Name: only letters and spaces.");
valid = false;
}Copyright © 2021 Codeinu
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