js input 事件

js input 事件 onfocus onblue的操作

<script>
    var searchDefault="请输入关键字";
    var focusFlag = false;
    function inputFocus(e){
        if(e.value== searchDefault) {
            e.value='';
        }
        focusFlag = true;
        e.style.color="black";
    }
function inputBlur(e){
        if(e.value=='') {
            e.value=searchDefault;
    e.style.color="#767676";
        }
    }

</script>

<input type="text" class="s-input" onfocus="inputFocus(this)" onblur="inputBlur(this)" value="请输入关键字" size="30"/>

js操作模拟select，自动生成

<select id="searchType" style="display:none;">
   <option>产品1</option>
   <option selected="selected">产品2</option>
   <option>产品3</option>
</select>

（2）JS操作select 跳转

onchange="window.open(this.options[this.selectedIndex].value,'_blank')"