Jquery implements the special effect of turning pages on the left and right of the keyboard _ jquery

JQuery implements the code for turning the left and right arrow keys on the keyboard on the webpage. we often see this effect in many novel websites, which can improve the user experience and facilitate visitor paging, this greatly improves the page flip function of the PV jquery keyboard on the left and right, and the jquery keyboard direction key on the page. when there is no previous or next article, pressing the keyboard will not respond, avoiding incorrect jump.

HTML code

Previous article: a page layout that gradually fades along with the scroll bar
 
Next: click the check box to add or delete the value to the input box.
 

Jquery code

$ (Document ). ready (function () {var prevpage = $ ("# pre "). attr ("href"); var nextpage = $ ("# next "). attr ("href"); $ ("body "). keydown (function (event) {if (event. keyCode = 37 & prevpage! = Undefined) location = prevpage; if (event. keyCode = 39 & nextpage! = Undefined) location = nextpage ;});});

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