Home > Developer > Web Develop

A native JS-written subtraction operation

Source: Internet
Author: User
Developer on Alibaba Coud: Build your first app with APIs, SDKs, and tutorials on the Alibaba Cloud. Read more ＞

According to my experience I said more and no one to see, but still simple introduction of the effect bar, you can choose +,-, *,/, to calculate data, like the words paste copy yourself to see it!

<!DOCTYPE HTML Public "-//W3C//DTD XHTML 1.0 transitional//en" "http://www.w3.org/TR/xhtml1/DTD/ Xhtml1-transitional.dtd "><HTMLxmlns= "http://www.w3.org/1999/xhtml"><Head><Metahttp-equiv= "Content-type"content= "text/html; charset=gb2312" /><title>Untitled Document</title></Head><Body><inputtype= ' text 'ID= ' Txt1 'value="" />    <SelectID= ' SELECT '>        <optionvalue= ' 0 '>+</option>        <optionvalue= "1">-</option>        <optionvalue= "2">*</option>        <optionvalue= "3">/</option>   </Select>   <inputtype= ' text 'ID= ' txt2 '/>    <inputtype= ' button 'value= ' = 'onclick= "count ()" /> <!--Use the = button to invoke the created function to get the result -    <inputtype= ' text 'ID= ' Fruit '/>  </Body><Scripttype= "Text/javascript">     functioncount () {vara=parseint (document.getElementById ("txt1"). Value)//gets the value of the first input box        varb=parseint (document.getElementById ("txt2"). Value)//gets the value of the second input box        varC=parseint (document.getElementById ("Select"). Value)varD=document.getElementById ("Fruit"). ValueSwitch(c) { Case 0: document.getElementById ("Fruit"). Value=Add (A, b); Break;  Case 1:d Ocument.getelementbyid ("Fruit"). Value=sum (A, b); Break;  Case 2:d Ocument.getelementbyid ("Fruit"). Value=app (A, b); Break;  Case 3:d Ocument.getelementbyid ("Fruit"). Value=DIVs (A, b); Break; }//gets the value selected by the drop-down box to change the subtraction algorithm    //set the value of the result input box     }     functionAdd (A, b) {suma=a+b; returnSuma; }         functionsum (A, b) {Sumb=a-b; returnSumb; }         functionapp (A, b) {SUMC=a*b; returnSUMC; }         functionDIVs (A, b) {SUMD=a/b;         returnSUMD; }    </Script> </HTML>

A native JS-written subtraction operation

This article is an English version of an article which is originally in the Chinese language on aliyun.com and is provided for information purposes only. This website makes no representation or warranty of any kind, either expressed or implied, as to the accuracy, completeness ownership or reliability of the article or any translations thereof. If you have any concerns or complaints relating to the article, please send an email, providing a detailed description of the concern or complaint, to info-contact@alibabacloud.com. A staff member will contact you within 5 working days. Once verified, infringing content will be removed immediately.

Contact Us

The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

If you find any instances of plagiarism from the community, please send an email to: info-contact@alibabacloud.com and provide relevant evidence. A staff member will contact you within 5 working days.

A Free Trial That Lets You Build Big!

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

Get Started for Free

  • Sales Support

    1 on 1 presale consultation

    Chat Contact Sales

  • After-Sales Support

    24/7 Technical Support 6 Free Tickets per Quarter Faster Response

    Open a Ticket

  • Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.

    Learn More