Basic JavaScript Question:

Download Job Interview Questions and Answers PDF

Example of using Regular Expressions for syntax checking in JavaScript?

JavaScript Interview Question
JavaScript Interview Question

Answer:

var re = new RegExp(" ^(&[A-Za-z_0-9]{1,}=[A-Za-z_0-9]{1,})*$" )
var text = myWidget.value
var OK = re.test(text)
if( ! OK ) {
alert(" The extra parameters need some work.
Should be something like: " &a=1&c=4" " )
}


Download JavaScript Interview Questions And Answers PDF

Previous QuestionNext Question
What are a fixed-width table and its advantages in JavaScript?How to add Buttons in JavaScript?