小编din*_*uti的帖子

我正在通过javascript设置一个按钮,但按钮不显示文本.

有关如何解决它的任何建议？

var b = document.createElement('button');
b.setAttribute('content', 'test content');
b.setAttribute('class', 'btn');
b.value = 'test value';

var wrapper = document.getElementById(divWrapper);
wrapper.appendChild(b);

谢谢!

在TileMill/CartoCSS中有一个选项可以有一个布尔"OR"吗？我确实尝试过正则表达式,但没有成功.我想简化这个CSS:

@ciPolyBackground: #F79320;
@ciPolyOpacity: 0.5;

#countries {
    [ne_10m_adm = "BOL"] { polygon-fill: @ciPolyBackground; polygon-opacity: @ciPolyOpacity; }
    [ne_10m_adm = "BRA"] { polygon-fill: @ciPolyBackground; polygon-opacity: @ciPolyOpacity; }
    [ne_10m_adm = "BWA"] { polygon-fill: @ciPolyBackground; polygon-opacity: @ciPolyOpacity; }
    [ne_10m_adm = "CHN"] { polygon-fill: @ciPolyBackground; polygon-opacity: @ciPolyOpacity; }
    [ne_10m_adm = "COD"] { polygon-fill: @ciPolyBackground; polygon-opacity: @ciPolyOpacity; }
    [ne_10m_adm = "COL"] { polygon-fill: @ciPolyBackground; polygon-opacity: @ciPolyOpacity; }
    [ne_10m_adm = "ECU"] { polygon-fill: @ciPolyBackground; polygon-opacity: @ciPolyOpacity; }
    [ne_10m_adm = "FJI"] { polygon-fill: @ciPolyBackground; polygon-opacity: @ciPolyOpacity; }
    [ne_10m_adm …