如
<input name="search_keywords" type="text" id="search_keywords" />
不要
<input name="search_keywords" type="text" id="search_keywords" onclick="" />
<input name="search_keywords" type="text" id="search_keywords" />
不要
<input name="search_keywords" type="text" id="search_keywords" onclick="" />
<script>
window.onload = function(){
var obj = document.getElementById("search_keywords");
if(document.all) search_keywords.attachEvent("onclick", doit);
else search_keywords.addEventListener("click",doit,false);
}
function doit(){alert('xx')}
</script>
<input name="search_keywords" type="text" id="search_keywords" />
else search_keywords.addEventListener("change",doit,false);
<script> var txt = document.getElementById("search_keywords");
txt.onclick = function()
{
alert(txt.value);
}
</script>