jquery 输入框blur 插件

$(document).ready(function(){

//focusblur

jQuery.focusblur = function(focusid) {

var focusblurid = $(focusid);

var defval = focusblurid.val();

focusblurid.focus(function(){

var thisval = $(this).val();

if(thisval==defval){

$(this).val("");

}

});

focusblurid.blur(function(){

var thisval = $(this).val();

if(thisval==""){

$(this).val(defval);

}

});

 

};

/*下面是调用方法*/

$.focusblur("#searchkey");

});