javascript笔记——placehold

<input type="text" name="搜索" value="搜索" placeholder="搜索" id="selector"/>

::-moz-placeholder{color:red;} //ff
::-webkit-input-placeholder{color:red;} //chrome,safari
:-ms-input-placeholder{color:red;} //ie10

$(function(){
if(!!navigator.userAgent.match(/MSIE 8.0/)){
$(‘input[placeholder], textarea[placeholder]‘).each(function() {
var input = $(this);
if (input.val() === ‘‘ && input.attr("placeholder") !== ‘‘){ 
input.addClass("placeholder").val(input.attr(‘placeholder‘));
}

input.focus(function() {
if (input.val() === input.attr(‘placeholder‘)) {
input.val(‘‘);
}
});

input.blur(function() {
if (input.val() === ‘‘ || input.val() === input.attr(‘placeholder‘)) {
input.val(input.attr(‘placeholder‘));
}
});
});
}
});