📄 ejeval.htm
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<title>ejEval -- GoAhead Embedded JavaScript</title>
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<TD class=title-left>ejEval</TD>
<TD class=title-center><b>GoAhead JavaScript API</b></TD>
<TD class=title-right><B>GoAhead EMF</B></TD>
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<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></p>
<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="../ws/ejscript.htm">JavaScript</A>,
<A href="../ws/asp.htm">Active Server Pages</A>,
<A href="ejOpen.htm">ejOpen</A>,
<A href="ejGetVar.htm">ejGetVar</A>
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