Js实现控制文本框中字体的大小，粗斜体，下划线。

Question

如何去掉type为password的input的文字输入时边框

Answer 1

function bold()
{
if(document.getElementById('bellSubject').style.fontWeight=="bold")
document.getElementById('bellSubject').style.fontWeight="";
else
document.getElementById('bellSubject').style.fontWeight="bold"; }
function italics()
{
if(document.getElementById('bellSubject').style.fontStyle=="italic")
document.getElementById('bellSubject').style.fontStyle="";
else
document.getElementById('bellSubject').style.fontStyle="italic"; }

Answer 2

function bold()
{
if(document.getElementById('bellSubject').style.fontWeight=="bold")
document.getElementById('bellSubject').style.fontWeight="";
else
document.getElementById('bellSubject').style.fontWeight="bold"; }
function italics()
{
if(document.getElementById('bellSubject').style.fontStyle=="italic")
document.getElementById('bellSubject').style.fontStyle="";
else
document.getElementById('bellSubject').style.fontStyle="italic"; }

Answer 3

function bold()
{
if(document.getElementById('bellSubject').style.fontWeight=="bold")
document.getElementById('bellSubject').style.fontWeight="";
else
document.getElementById('bellSubject').style.fontWeight="bold"; }
function italics()
{
if(document.getElementById('bellSubject').style.fontStyle=="italic")
document.getElementById('bellSubject').style.fontStyle="";
else
document.getElementById('bellSubject').style.fontStyle="italic"; }

Answer 4

先把css文件写好，然后修改元素的className就可以了