php - 如何在jquery中改变字体颜色

Question

我想改变html的字体颜色(用户名+'已经存在，请换一个');但我不知道如何更改它。

function check_availability(){  

    //get the username  
    var username = $('#username').val();  

    //use ajax to run the check  
    $.post("<?php echo base_url();?>loginFunction/checkUsername", { username: username },  
        function(result){  
            //if the result is 1  
            if(result == 1){  
                //show that the username is available  
                $('#username_availability_result').html(username + ' is Available');  
            }else{  
                //show that the username is NOT available  
                $('#username_availability_result').html(username + ' is already exist. Please try another one');  
            }  
    });

Answer 1

尝试使用 css -

$('#username_availability_result')
.css('color', 'red')
.html(username + ' is already exist. Please try another one');