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📄 一个网页计算器.htm

📁 一个很酷的html计算器。
💻 HTM
字号:
🔍 
<HTML>
    <HEAD>
        <TITLE>计算器</TITLE>
        <SCRIPT LANGUAGE="JavaScript">

        <!-- 
       function calculate(form) {
       form.expression.value = eval(form.expression.value)
            }
     function enter_expr(form, str) {
     form.expression.value += str
            }
        function clear_expr(form) {
        form.expression.value = ""
            }
       </SCRIPT>
    </HEAD>
    <BODY bgcolor="#ffffee" text=#000000>
<center>
<TABLE border=4 bgcolor="#C0C0C0" width="200">
<TR><TH width="188"><br><p><p>     
 <CENTER>
      <TT>
      <H2><font color="#0000A0">计算器</font></H2></th></tr><tr><th width="188">
      <FORM NAME="myform">
      <TABLE BORDER=1>

          <TD COLSPAN=4 align=center>
 <INPUT TYPE="text" NAME="expression" SIZE=20>
      <TR align=center>
    
      <TD><INPUT TYPE="button" VALUE=" 7 " SIZE=10 
onClick="enter_expr(this.form, '7')">
      <TD><INPUT TYPE="button" VALUE=" 8 " 
onClick="enter_expr(this.form, '8')">
      <TD><INPUT TYPE="button" VALUE=" 9 " 
onClick="enter_expr(this.form, '9')">
      <TD><INPUT TYPE="button" VALUE=" / " 
onClick="enter_expr(this.form, '/')">
      <TR align=center>

      <TD><INPUT TYPE="button" VALUE=" 4 " 
onClick="enter_expr(this.form, '4')">
      <TD><INPUT TYPE="button" VALUE=" 5 " 
onClick="enter_expr(this.form, '5')">
      <TD><INPUT TYPE="button" VALUE=" 6 " 
onClick="enter_expr(this.form, '6')">
      <TD><INPUT TYPE="button" VALUE=" * " 
onClick="enter_expr(this.form, '*')">
      <TR align=center>

      <TD><INPUT TYPE="button" VALUE=" 1 " 
onClick="enter_expr(this.form, '1')">
      <TD><INPUT TYPE="button" VALUE=" 2 " 
onClick="enter_expr(this.form, '2')">
      <TD><INPUT TYPE="button" VALUE=" 3 " 
onClick="enter_expr(this.form, '3')">
      <TD><INPUT TYPE="button" VALUE=" - " 
onClick="enter_expr(this.form, '-')">
      <TR align=center>

      <TD><INPUT TYPE="button" VALUE=" 0 " 
onClick="enter_expr(this.form, '0')">
      <TD><INPUT TYPE="button" VALUE=" . " 
onClick="enter_expr(this.form, '.')">
      <TD><INPUT TYPE="button" VALUE=" + " 
onClick="enter_expr(this.form, '+')">
      <TD><INPUT TYPE="button" VALUE=" % " 
onClick="enter_expr(this.form, '%')">
      <TR align=center>

      <TD COLSPAN=2><INPUT TYPE="button" VALUE="   =   " 
onClick="calculate(this.form)">
      <TD COLSPAN=2><INPUT TYPE="button" VALUE="  Clear  " 
onClick="clear_expr(this.form)">
      </TABLE>
</TH></TR></TABLE>
      </FORM>
      </CENTER>
</BODY>
</HTML>

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