📄 ejeval.htm
字号:
<html>
<head>
<title>ejEval -- GoAhead Embedded JavaScript</title>
<link rel="stylesheet" href="../../../style/doc.css" type="text/css">
</head>
<body>
<table width="550"> <tr><td>
<TABLE border=0 width=100% cellspacing=0 cellpadding=0 CLASS="apiTitle">
<TR>
<td class="titleLeft" align=left width="33%"><B>ejEval</B></TD><td class="titleCenter" align=center width="33%"><b>GoAhead JavaScript API</b></TD><td class="titleRight" align=right width="33%"><B>GoAhead EMF</B></TD></TR>
</TABLE><HR>
<h2>Synopsis</h2><p>Set the value of a JavaScript variable</p><h2>Prototype</h2><pre>
#include "ej.h"
int <b>ejEval</b>(int eid, char_t *script, char_t **errorMessage);
</pre>
<h2>Parameters</h2><p><table width=90%>
<TR>
<TD width=40>eid
<TD>JavaScript interpreter handle
<TR>
<TD width=40>script
<TD> JavaScript to evaluate
<TR>
<TD width=40>errorMessage
<TD> Error
message</TD></TR></table><h2>Description</h2><P>The ejEval procedure evaluates a JavaScript script. If
the script fails, a text message describing the error
is returned in <i>errorMessage</i>. This message is dynamically
allocated and must be freed using <i>bfree</i>.
<h2>Return Value</h2><p>Returns 0 if successful. Returns -1 on errors.</p><h2>Example</h2><pre>char_t *emsg;
ejEval(eid, "write('Hello World');", &emsg);
</pre>
<h2>See Also</h2><p>
<A href="../../../over/ejs.htm">JavaScript</A>,
<A href="../../../over/asp.htm">Active Server Pages</A>,
<A href="ejOpen.htm">ejOpen</A>,
<A href="ejGetVar.htm">ejGetVar</A>
</p></td></tr></table>
</body>
</html>
⌨️ 快捷键说明
复制代码
Ctrl + C
搜索代码
Ctrl + F
全屏模式
F11
切换主题
Ctrl + Shift + D
显示快捷键
?
增大字号
Ctrl + =
减小字号
Ctrl + -