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This article introduces the knowledge of "how to use javascript regular expressions". Many people will encounter this dilemma in the operation of actual cases, so let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!

Form validation

Simple layout:

Q Q

Mobile phone

Mailbox

Landline

Name

Js Code:

CheckInput (my$ ("qq"), / ^\ d {5pm 11} $/); / / qq

CheckInput (my$ ("phone"), / ^\ d {11} $/); / / Mobile phone

CheckInput (my$ ("e-mail"), / ^ [0-9amurzAmurzZcolors. -] + [@] [0-9aMuzAmurZenzenz.-] + ([.] [a-zA-Z] +) {1jin2} $/); / / mailbox

CheckInput (my$ ("telephone"), / ^\ d {3jue 4} [-]\ d {7pm 8} $/); / / landline number

CheckInput (my$ ("fullName"), / ^ [\ u4e00 -\ u9fa5] {2pr 6} $/); / / Chinese name / / verify whether the current text box matches and displays the result through regular expression

Function checkInput (input,reg) {

/ / text box registers events that lose focus

Input.onblur=function () {

If (reg.test (this.value)) {

This.nextElementSibling.innerText= "got it right"

This.nextElementSibling.style.color= "green"

} else {

This.nextElementSibling.innerText= "Let you show off, wrong?"

This.nextElementSibling.style.color= "red"

}

}

}

That's all for "how to use javascript regular expressions". Thank you for reading. If you want to know more about the industry, you can follow the website, the editor will output more high-quality practical articles for you!

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