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This article mainly explains "how to use jQuery to add or subtract the quantity of goods". The content of the explanation in the article is simple and clear, and it is easy to learn and understand. please follow the editor's train of thought to study and learn "how to use jQuery to add or subtract the quantity of goods".

The specific code is as follows:

$(document) .ready (function () {/ / get the text box object var t = $("# text_box"); / / initialize the number to 1 and invalidate minus $('# min'). Attr ('disabled',true); / / increase the number operation $("# add") .click (function () {/ / add an absolute value to the acquired val to avoid negative t.val (Math.abs (parseInt (t.val () + 1) If (parseInt (t.val ())! = 1) {$('# min'). Attr ('disabled',false);}) / / quantity reduction operation $("# min") .click (function () {t.val (parseInt (t.val ())-1); if (parseInt (t.val ()) = = 1) {$(' # min'). Attr ('disabled',true);};})})) Thank you for your reading, the above is the content of "how to use jQuery to add or subtract the quantity of goods". After the study of this article, I believe you have a deeper understanding of how to use jQuery to add or subtract the quantity of goods, and the specific use needs to be verified in practice. Here is, the editor will push for you more related knowledge points of the article, welcome to follow!

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