How to use JavaScript difference to realize a comparison tool

In this article Xiaobian for you to introduce in detail "how to use JavaScript difference to achieve a comparison tool", the content is detailed, the steps are clear, and the details are handled properly. I hope this article "how to use JavaScript difference to achieve a comparison tool" can help you solve your doubts.

Get rid of the page first.

Document textarea {/ * border: none; * / width: 49%; height: 400px; / * font-size: 17pt; * /} # btn {width: 100%; height: 50px; position: relative; top: 0px; / * position: absolute; * /} # p2 {margin-left: 940px; margin-top:-38px;} comparison

Not submitted

The list of missing persons has been submitted.

It's a little ugly. It doesn't matter. Use it yourself.

Start writing JS code

! set2.has (x);} return null } / / simply give the button a click event btn.onclick = function () {/ / list of unsubmitted authors let Should_sub = txt.value.split (") / / list of unsubmitted authors let already_sub = txt2.value.split (") let L3 = getDifference (Should_sub, already_sub) / / number of unsubmitted persons let L4 = getDifference (already_sub) Should_sub) / / the filtered values are fed back to the two input boxes on the page: txt3.value = l3.join ("") txt4.value = l4.join ("")}. Read here. This article "how to use JavaScript difference to achieve a comparison tool" has been introduced. If you want to master the knowledge points of this article, you still need to practice and use it. If you want to know more about the article, you are welcome to follow the industry information channel.