How to use js for mailbox verification of user input

This article is about how to use js to verify email content entered by users. Xiaobian thinks it is quite practical, so share it with everyone for reference. Let's follow Xiaobian and have a look.

js to the user input content to do mailbox verification method

title Please enter your email address: * //If the input is mailbox, then the background color is green, otherwise it is red //Get the text box to register the event of losing focus document.getElementById("email").onblur = function () { //Check whether the input in this text box is mailbox var reg = /^[0-9a-zA-Z_.-]+ [@][0-9a-zA-Z_.-]+ ([.] [a-zA-Z]+){1,2}$/; if (reg.test(this.value)) { this.style.backgroundColor = "green"; } else { this.style.backgroundColor = "red"; } Thank you all for reading! About "how to use js to do mailbox verification of user input content" this article is shared here, I hope the above content can be of some help to everyone, so that everyone can learn more knowledge, if you think the article is good, you can share it to let more people see it!