站内搜索脚本例子六(javascript)_Javascript教程

脚本说明:
第一步：把如下代码加入

区域中

<script><br/><!-- 如下是表单合法性检查,主要是避免一些非法字符的查询! --><br/>function validate_form()<br/>{<br/>txt = document.form.search.value;<br/>newindex = document.form.numhits.selectedIndex;<br/>dahits = document.form.numhits[newindex].value;<br/>newindexb = document.form.whichdir.selectedIndex;<br/>dadir = document.form.whichdir[newindexb].value;<br/>if (txt.indexOf(".") != -1){<br/>alert("Search is invalid! Contains a &#39;.&#39;"); return;}<br/>if (txt.indexOf(",") != -1){<br/>alert("Search is invalid! Contains a &#39;,&#39;"); return;}<br/>if (txt.indexOf("@") != -1){<br/>alert("Search is invalid! Contains a &#39;@&#39;&#39;"); return;}<br/>if (txt.indexOf("!") != -1){<br/>alert("Search is invalid! Contains a &#39;!&#39;&#39;"); return;}<br/>if (txt.indexOf("#") != -1){<br/>alert("Search is invalid! Contains a &#39;#&#39;&#39;"); return;}<br/>if (txt.indexOf("$") != -1){<br/>alert("Search is invalid! Contains a &#39;$&#39;&#39;"); return;}<br/>if (txt.indexOf("%") != -1){<br/>alert("Search is invalid! Contains a &#39;%&#39;&#39;"); return;}<br/>if (txt.indexOf("^") != -1){<br/>alert("Search is invalid! Contains a &#39;^&#39;&#39;"); return;}<br/>if (txt.indexOf("&") != -1){<br/>alert("Search is invalid! Contains a &#39;&&#39;&#39;"); return;}<br/>if (txt.indexOf("*") != -1){<br/>alert("Search is invalid! Contains a &#39;*&#39;&#39;"); return;}<br/>if (txt.indexOf("(") != -1){<br/>alert("Search is invalid! Contains a &#39;(&#39;&#39;"); return;}<br/>if (txt.indexOf(")") != -1){<br/>alert("Search is invalid! Contains a &#39;)&#39;&#39;"); return;}<br/>if (txt.indexOf("[") != -1){<br/>alert("Search is invalid! Contains a &#39;[&#39;&#39;"); return;}<br/>if (txt.indexOf("]") != -1){<br/>alert("Search is invalid! Contains a &#39;]&#39;&#39;"); return;}<br/>if (txt.indexOf(";") != -1){<br/>alert("Search is invalid! Contains a &#39;;&#39;&#39;"); return;}<br/>if (txt.indexOf(":") != -1){<br/>alert("Search is invalid! Contains a &#39;:&#39;&#39;"); return;}<br/>if (txt.indexOf("<") != -1){<br/>alert("Search is invalid! Contains a &#39;<&#39;&#39;"); return;}<br/>if (txt.indexOf(">") != -1){<br/>alert("Search is invalid! Contains a &#39;>&#39;&#39;"); return;}<br/>if (txt.indexOf("?") != -1){<br/>alert("Search is invalid! Contains a &#39;?&#39;&#39;"); return;}<br/>if (txt.indexOf("=") != -1){<br/>alert("Search is invalid! Contains a &#39;=&#39;&#39;"); return;}<br/>if (txt.indexOf("+") != -1){<br/>alert("Search is invalid! Contains a &#39;+&#39;&#39;"); return;}<br/>else<br/>{<br/>jsi = new makeLinks(linksize);<br/>searchLinks(jsi, txt, dahits, dadir);<br/>document.write(&#39;&#39;);<br/>document.write(&#39;<font color=red>....... 查询结果结束 .......<P>&#39;);<br/>document.write(&#39;<hr>&#39;);<br/>document.write(&#39;</script>

');
}

}

 

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