This method is useful when parsing element-only content; if it encounters non-white-space text before a tag is found (other than comments or processing instructions), it throws an exception.
该方法在解析只含元素的内容时很有用，如果在发现标记之前遇到非空白文本(不包括注释或处理指令)，就会抛出异常。
This specification does not indicate the behavior, rendering or otherwise, of space characters other than those explicitly identified here as white space characters.
除了在这里将所有的字符标记为空白字符外，本规范不规定空白字符的行为，如展现或其他的行为。
The chop() function will remove a white space or other predefined character from the right end of a string.
函数的作用是：从一个字符串的右边结尾处，删除预定一字符中所包含的空格。
应用推荐