can a string contains special characters javscript code example

Example 1: regex to check if string contains special characters javascript

var format = /[ `!@#$%^&*()_+\-=\[\]{};':"\\|,.<>\/?~]/;
//            ^                                       ^   
document.write(format.test("My@string-with(some%text)") + "<br/>");    //true
document.write(format.test("My string with spaces") + "<br/>");        //true 
document.write(format.test("MyStringContainingNoSpecialChars"));       //false

Example 2: does string contain special charactors javascript

var format = /[ `!@#$%^&*()_+\-=\[\]{};':"\\|,.<>\/?~]/;
//            ^                                       ^   
document.write(format.test("My@string-with(some%text)") + "<br/>");
document.write(format.test("My string with spaces") + "<br/>");
document.write(format.test("MyStringContainingNoSpecialChars"));