//更换字体
function getfontlib(that) {
var index = that.selectedIndex;
var font_val = that.options[index].value;
var text = that.options[index].text;
console.log('index==', index);
console.log('font_val==', font_val);
console.log('text==', text);
$(that).attr("style", "font-family:'" + font_val + "';");
}