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A calculator written a long time ago

Source: Internet
Author: User
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A calculator I wrote a long time ago was written when Baidu knew how to answer a question,
By accident, I felt a little interesting and sent it out.
Html code
<! DOCTYPE html PUBLIC "-// W3C // dtd xhtml 1.0 Transitional // EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<Html xmlns = "http://www.w3.org/1999/xhtml">
<Head>
<Meta http-equiv = "Content-Type" content = "text/html; charset = gb2312"/>
<Title> calculator </title>
<Style type = "text/css">
Input {
Width: 50px;
Margin: 5px
}
</Style>
<Script type = "text/javascript" defer = "defer">
Function add (s ){
Var t = document. getElementById ("text ");
Switch (s ){
Case '+ ':
Case '-':
Case '*':
Case '/':
If (t. value = ''){
T. value = '0' + '\ n' + s;
} Else {
T. value + = '\ n' + s;
}
Break;
Case '= ':
T. value = eval (t. value. replace (/<[^>] *> | \ n/igm ,''))
Break;
Case 'C ':
T. value = '0 ';
Break;
Case 'ce ':
Tt. value = t. value. substr (0, t. value. length-1)
Break;
Default:
If (t. value = '0 '){
T. value = s;
} Else {
If (t. value. substr (t. value. length-1, 1). match (/[\ + \-\ * \/] $/igm )){
T. value + = '\ n' + s;
} Else {
T. value + = ''+ s;
}
}
}
}
</Script>
</Head>
 
<Body>
<Div>
<Textarea id = "text" style = "width: 200px; height: 100px"> 0 </textarea>

 
<Input type = "button" value = "1" onclick = "add (1)"/>
<Input type = "button" value = "2" onclick = "add (2)"/>
<Input type = "button" value = "3" onclick = "add (3)"/>

 
<Input type = "button" value = "4" onclick = "add (4)"/>
<Input type = "button" value = "5" onclick = "add (5)"/>
<Input type = "button" value = "6" onclick = "add (6)"/>

 
<Input type = "button" value = "7" onclick = "add (7)"/>
<Input type = "button" value = "8" onclick = "add (8)"/>
<Input type = "button" value = "9" onclick = "add (9)"/>

 
<Input type = "button" value = "0" onclick = "add (0)"/>
<Input type = "button" value = "." onclick = "add ('.')"/>
<Input type = "button" value = "+" onclick = "add ('+')"/>

 
<Input type = "button" value = "-" onclick = "add ('-')"/>
<Input type = "button" value = "*" onclick = "add ('*')"/>
<Input type = "button" value = "/" onclick = "add ('/')"/>

 
<Input type = "button" value = "=" onclick = "add ('=')"/>
<Input type = "button" value = "c" onclick = "add ('C')"/>
<Input type = "button" value = "ce" onclick = "add ('ce ')"/>
</Div>
</Body>
</Html>

Author: "linfeng xiaozhu"
 

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.

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