special character match in string javascript code example

Example 1: regex special characters javascript

var regex = /^[a-zA-Z0-9!@#\$%\^\&*\)\(+=._-]+$/g

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"));