string.html

javascript 1.5规范

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<zrefheader>Syntax</zrefheader>
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<A NAME="1196662"></A><FONT FACE="courier, couriernew, monospaced size" SIZE="2">
<zcodeline>charCodeAt([<I>index</I>])
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<zrefheader>Parameters</zrefheader>
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<A NAME="1196669"> </A><FONT FACE="Arial, Helvetica, sans-serif" SIZE="2"><zparagraph><BR>
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<zcodeline>index
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<ztabletext>An integer between 0 and 1 less than the length of the string. The default value is 0.</ztabletext>
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<A NAME="1196670"> </A>
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<zrefheader>Description</zrefheader>
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<A NAME="1223000"> </A><FONT FACE="Arial, Helvetica, sans-serif" SIZE="2"><zparagraph>Unicode values range from 0 to 65,535. The first 128 Unicode values are a direct match of the ASCII character set. For information on Unicode, see the <A HREF="http://developer.netscape.com/docs/manuals/js/core/jsguide/index.htm"><I>Core JavaScript Guide</I></A>.</zparagraph>
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<A NAME="1222874"> </A>
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<zrefheader>Backward Compatibility</zrefheader>
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<zheadrunin>JavaScript 1.2. </zheadrunin>
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<A NAME="1222876"> </A><FONT FACE="Arial, Helvetica, sans-serif" SIZE="2"><zparagraph>The <FONT FACE="courier, couriernew, monospaced size">charCodeAt</FONT> method returns a number indicating the ISO-Latin-1 codeset value of the character at the given index. The ISO-Latin-1 codeset ranges from 0 to 255. The first 0 to 127 are a direct match of the ASCII character set.</zparagraph>
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<zrefheader>Example</zrefheader>
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<A NAME="1226737"> </A><FONT FACE="Arial, Helvetica, sans-serif" SIZE="2"><zparagraph><B></B>The following example returns 65, the Unicode value for A.</zparagraph>
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<A NAME="1196674"></A><FONT FACE="courier, couriernew, monospaced size" SIZE="2">
<zcodeline>"ABC".charCodeAt(0) // returns 65
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<A NAME="1196678"> </A>
<A NAME="concat"> </A>
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<zrefhead2>concat</zrefhead2>
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<A NAME="1196692"> </A><FONT FACE="Arial, Helvetica, sans-serif" SIZE="2"><zparagraph>Combines the text of two or more strings and returns a new string. <BR>
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<ztabletext><I>Method of</I></ztabletext>
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<A NAME="1196687"> </A>
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<ztabletext><A HREF="string.html#1193137"  >String</A></ztabletext>
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<ztabletext><I>Implemented in</I></ztabletext>
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<A NAME="1196691"> </A>
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<ztabletext>JavaScript 1.2, NES 3.0</ztabletext>
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<A NAME="1196693"> </A>
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<zrefheader>Syntax</zrefheader>
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<A NAME="1196694"></A><FONT FACE="courier, couriernew, monospaced size" SIZE="2">
<zcodeline>concat(<I>string2</I>, <I>string3</I>[, ..., <I>stringN</I>])
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<A NAME="1196695"> </A>
<A NAME="Parameters"> </A>
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<zrefheader>Parameters</zrefheader>
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<A NAME="1196705"> </A><FONT FACE="Arial, Helvetica, sans-serif" SIZE="2"><zparagraph><BR>
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<zcodeline>string2...<br>
string<I>N
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<ztabletext>Strings to concatenate to this string.</ztabletext>
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<zrefheader>Description</zrefheader>
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<A NAME="1196707"> </A><FONT FACE="Arial, Helvetica, sans-serif" SIZE="2"><zparagraph><FONT FACE="courier, couriernew, monospaced size">concat</FONT> combines the text from one or more strings and returns a new string. Changes to the text in one string do not affect the other string. </zparagraph>
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<A NAME="1196708"> </A>
<A NAME="Example"> </A>
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<zrefheader>Example</zrefheader>
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<A NAME="1196709"> </A><FONT FACE="Arial, Helvetica, sans-serif" SIZE="2"><zparagraph>The following example combines two strings into a new string. </zparagraph>
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<A NAME="1222717"></A><FONT FACE="courier, couriernew, monospaced size" SIZE="2">
<zcodeline>s1="Oh "<br>
s2="what a beautiful "<br>
s3="mornin'."<br>
s4=s1.concat(s2,s3) // returns "Oh what a beautiful mornin'."
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<A NAME="1214362"> </A>
<A NAME="constructor"> </A>
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<zrefhead2>constructor</zrefhead2>
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<A NAME="1214363"> </A><FONT FACE="Arial, Helvetica, sans-serif" SIZE="2"><zparagraph>Specifies the function that creates an object's prototype. Note that the value of this property is a reference to the function itself, not a string containing the function's name.<BR>
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<ztabletext><I>Property of</I></ztabletext>
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<ztabletext><A HREF="string.html#1193137"  >String</A></ztabletext>
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<ztabletext><I>Implemented in</I></ztabletext>
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<A NAME="1214375"> </A>
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<ztabletext>JavaScript 1.1, NES 2.0</ztabletext>
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<ztabletext><I>ECMA version</I></ztabletext>
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<ztabletext>ECMA-262</ztabletext>
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<zrefheader>Description</zrefheader>
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<A NAME="1214384"> </A><FONT FACE="Arial, Helvetica, sans-serif" SIZE="2"><zparagraph>See <A HREF="object.html#1193229"  >Object.constructor</A>.</zparagraph>
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<A NAME="fixed"> </A>
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<zrefhead2>fixed</zrefhead2>
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<A NAME="1196730"> </A><FONT FACE="Arial, Helvetica, sans-serif" SIZE="2"><zparagraph>Causes a string to be displayed in fixed-pitch font as if it were in a <FONT FACE="courier, couriernew, monospaced size">TT</FONT> tag.<BR>
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<ztabletext><I>Method of</I></ztabletext>
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<ztabletext><A HREF="string.html#1193137"  >String</A></ztabletext>
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<ztabletext><I>Implemented in</I></ztabletext>
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<A NAME="1196729"> </A>
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<ztabletext>JavaScript 1.0, NES 2.0</ztabletext>
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<zrefheader>Syntax</zrefheader>
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<A NAME="1196732"></A><FONT FACE="courier, couriernew, monospaced size" SIZE="2">
<zcodeline>fixed()
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<A NAME="Parameters"> </A>
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<zrefheader>Parameters</zrefheader>
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<A NAME="1196734"> </A><FONT FACE="Arial, Helvetica, sans-serif" SIZE="2"><zparagraph>None</zparagraph>
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<zrefheader>Description</zrefheader>
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<A NAME="1196742"> </A><FONT FACE="Arial, Helvetica, sans-serif" SIZE="2"><zparagraph>Use the <FONT FACE="courier, couri