input输入框内，焦点后文字消失；placeholder 与 value 区别

<input type="password" id="password" name="password" placeholder="请输入密码" onfocus="if(placeholder=='请输入密码') {placeholder=''}" onblur="if (value=='') {placeholder='请输入密码'}">

<input type="tel" id="tel" value="请输入您的电话号码" onfocus="if(value=='请输入您的电话号码') {value=''}" onblur="if (value=='') {value='请输入您的电话号码'}">

placeholder 与 value 区别

placeholder可以用于密码内可见文字提示
value不可

转载于:https://www.cnblogs.com/chuningning/p/5736934.html