JavaScript通用库知识点分析

JavaScript通用库（二）

VisualSW

/*

IsEnLetter(string,string):测试字符串，大小写(UL,U,L or ul,u,l)

*/

function IsEnLetter(objStr,size)

{

var reg;

 

if(Trim(objStr)=="")

{

return false;

}

else

{

objStr=objStr.toString();

}

 

if((size==null)||(Trim(size)==""))

{

size="UL";

}

else

{

size=size.toUpperCase();

}

 

switch(size)

{

case "UL":

//大小写

reg=/^[A-Za-z]+$/;

break;

case "U":

//大写

reg=/^[A-Z]+$/;

break;

case "L":

//小写

reg=/^[a-z]+$/;

break;

default:

alert("检查大小写参数，只可为(空、UL、U、L)");

return false;

break;

}

 

var r=objStr.match(reg);

if(r==null)

{

return false;

}

else

{

return true;

}

}

/*

================================================================================

功能：鼠标小提示

作者：申旺

日期：2004/04/15

================================================================================

*/

//定义变量、设置默认值

var LabelFontFace="宋体,arial,Verdana";

var LabelFontColor="#000000";

var LabelFontSize="9pt";

var LabelFontStyle="Font.PLAIN";

var LabelBorderColor="#000000";

var LabelBackColor="#FFFFE1";

//设置各个属性

function SetLabelFontFace(obj)

{

obj=Trim(obj);

if(obj==null || obj=="")

{

obj="宋体,arial,Verdana";

}

LabelFontFace=obj;

}

function SetLabelFontColor(obj)

{

obj=Trim(obj);

if(obj==null || obj=="")

{

obj="#000000";

}

LabelFontColor=obj;

}

function SetLabelFontSize(obj)

{

obj=Trim(obj);

if(obj==null || obj=="")

{

obj="9pt";

}

LabelFontSize=obj;

}

function SetLabelFontStyle(obj)

{

obj=Trim(obj);

if(obj==null || obj=="")

{

obj="Font.PLAIN";

}

LabelFontStyle=obj;

}

function SetLabelBorderColor(obj)

{

obj=Trim(obj);

if(obj==null || obj=="")

{

obj="#000000";

}

LabelBorderColor=obj;

}

function SetLabelBackColor(obj)

{

obj=Trim(obj);

if(obj==null || obj=="")

{

obj="#FFFFE1";

}

LabelBackColor=obj;

}

//合成文字样式

function SetTextStyle(str)

{

var strRet="";

 

var strStyle="";

 

strStyle="font-family:"+LabelFontFace+";";

strStyle+="color:"+LabelFontColor+";";

strStyle+="font-size:"+LabelFontSize+";";

 

switch(LabelFontStyle.toLowerCase())

{

case "font.plain":

strStyle+="font-weight: normal;";

strStyle+="font-style: normal;";

break;

case "font.bold":

strStyle+="font-weight: bold;";

strStyle+="font-style: normal;";

break;

case "font.italic":

strStyle+="font-weight: normal;";

strStyle+="font-style: italic;";

break;

case "font.italicbold":

case "font.bolditalic":

strStyle+="font-weight: bold;";

strStyle+="font-style: italic;";

break;

default:

strStyle+="font-weight: bold;";

strStyle+="font-style: italic;";

break;

}

 

strRet="<font style='"+strStyle+"'>";

strRet+="&nbsp;"+str+"&nbsp;";

strRet+="</font>";

 

return strRet;

}

//合成表格样式

function SetTableStyle()

{

var strRet="";

 

strRet+="border-right: "+LabelBorderColor+" 1px solid;";

strRet+="border-top: "+LabelBorderColor+" 1px solid;";

strRet+="border-left: "+LabelBorderColor+" 1px solid;";

strRet+="border-bottom: "+LabelBorderColor+" 1px solid;";

strRet+="background-color:"+LabelBackColor;

 

return strRet;

}

//显示提示

function ShowNote(str)

{

var strHtml;

 

strHtml="";

strHtml+="<table height=1px width=1px border='0'cellspacing='0' cellpadding='0' style='" + SetTableStyle() + "'>";

strHtml+="<tr>";

strHtml+="<td>"+SetTextStyle(str)+"</td>";

strHtml+="</tr>";

strHtml+="</table>";

 

if (document.all&&document.readyState=="complete")

{

document.all.div_Note.innerHTML=strHtml;

document.all.div_Note.style.pixelLeft=event.clientX+document.body.scrollLeft+10

document.all.div_Note.style.pixelTop=event.clientY+document.body.scrollTop+10

document.all.div_Note.style.visibility="visible"

}

}

//隐藏提示

function HideNote()

{

if (document.all)

{

document.all.div_Note.style.visibility="hidden";

}

else

{

if (document.layers)

{

clearInterval(currentscroll)

document.div_Note.visibility="hidden";

}

}

}

//初始化

function Init()

{

window.document.write("<div id=/"div_Note/" style=/"VISIBILITY:hidden; POSITION:absolute; HEIGHT:13px;z-index:1/"></div>");

}

Init();

//生成提示字符

function ShowLabel(text,note,bclick)

{

if(bclick!=null)

{

return "<a href=/"#/" onMouseOver=/"ShowNote('" + note + "')/" onMouseOut=/"HideNote()/" onClick=/"JavaScript:DoSomeThing(this);/">" + text + "</a>";

}

else

{

return "<a href=/"#/" onMouseOver=/"ShowNote('" + note + "')/" onMouseOut=/"HideNote()/">" + text + "</a>";

}

}

测试页面：

<HTML>

<HEAD>

<title>Common JavaScript</title>

<script language="javascript" src="./Common.js"></script>

<script language="javascript">

function CheckInt()

{

iptResult.value=IsInt(iptTest.value,iptSign.value,iptZero.value);

}

 

function CheckFloat()

{

iptResult.value=IsFloat(iptTest.value,iptSign.value,iptZero.value);

}

 

function CheckLetter()

{

iptResult.value=IsEnLetter(iptTest.value,iptSign.value);

}

document.write(ShowLabel("TEST","Only a testing!"));

document.write("<br>");

</script>

<meta http-equiv="expires" content="0">

</HEAD>

<body>

<input type=text value="" id="iptTest"><input type=button value="IsEmpty" onclick="IsEmpty('iptTest');">

<input type=button value="CheckInt" onclick="CheckInt()">

<br>

<input type=text value="" id="iptSign" NAME="iptSign"><input type=button value="CheckFloat" onclick="CheckFloat()">

<br>

<input type=text value="" id="iptZero" NAME="iptZero"><input type=button value="CheckLetter" onclick="CheckLetter()">

<br>

<input type=text value="" id=iptResult disabled=true>

</body>

</HTML>

效果如下：

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