通过CSS规则禁止选中文字的实现代码

语法

Formal syntax: none | text | all | element

(-prefix-)user-select: none;
(-prefix-)user-select: text;
(-prefix-)user-select: all;
(-prefix-)user-select: element;

示例

.row-of-icons {
    -webkit-user-select: none;  /* Chrome all / Safari all */
    -moz-user-select: none;     /* Firefox all */
    -ms-user-select: none;      /* IE 10+ */</p>
<p>    /* No support for these yet, use at own risk */
    -o-user-select: none;
    user-select: none;          
}

IE兼容性

目前在IE 10以及IE 10以上版本的浏览器可以使用-ms-user-select这个规则，但在更早版本的IE，我们只能通过javascript实现禁止选中文本：

$(el).attr('unselectable','on') 
.css({'-moz-user-select':'-moz-none', 
    '-moz-user-select':'none', 
    '-o-user-select':'none', 
    '-khtml-user-select':'none', /* you could also put this in a class */ 
    '-webkit-user-select':'none',/* and add the CSS class here instead */ 
    '-ms-user-select':'none', 
    'user-select':'none' 
}).bind('selectstart', function(){ 
    return false; 
});