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CODE:
<script> function test() { if(document.a.b.value.length>50) { alert("²»Äܳ¬¹ý50¸ö×Ö·û£¡"); document.a.b.focus(); return
false; } } </script> <form. name=a nsubmit="return test()"> <textarea name="b" cols="40" wrap="VIRTUAL" rows="6"></textarea> <input type="submit" name="Submit" value="check">
</form>2. Ö»ÄÜÊǺº×Ö
JavaScript´úÂë
CODE:
<input nkeyup="value="/oblog/value.replace(/[^\u4E00-\u9FA5]/g,'')">3." Ö»ÄÜÊÇÓ¢ÎÄ
JavaScript´úÂë
CODE:
<script. language=javascript> function onlyEng() { if(!(event.keyCode>=65&&event.keyCode<=90)) event.returnvalue=false; } </script>
<input nkeydown="onlyEng();">4. Ö»ÄÜÊÇÊý×Ö
JavaScript´úÂë
CODE:
<script. language=javascript> function onlyNum() { if(!((event.keyCode>=48&&event.keyCode<=57)||(event.keyCode>=96&&event.keyCode<=105))) //¿¼ÂÇС¼üÅÌÉϵÄÊý×Ö¼ü
event.returnvalue=false; } </script>
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JavaScript´úÂë
CODE:
<SCRIPT. LANGUAGE=javascript. RUNAT=Server> function isEmail(strEmail) { if (strEmail.search(/^\w+((-\w+)|(\.\w+))*\@[A-Za-z0-9]+((\.|-)[A-Za-z0-9]+)*\.[A-Za-z0-9]+$/) != -1) return
true; else
alert("oh"); } </SCRIPT>
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JavaScript´úÂë
CODE:
<script. language="javascript1.2"> function test() { if((a.b.value.indexOf ("***") == 0)||(a.b.value.indexOf ("****") == 0)){ alert(":)"); a.b.focus(); return
false;} } </script> <form. name=a nsubmit="return test()"> <input type=text name=b> <input type="submit" name="Submit" value="check"> </form> 8. Á½´ÎÊäÈëÃÜÂëÊÇ·ñÏàͬ
JavaScript´úÂë
CODE:
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