javascript - css() 没有为 body 标签设置背景属性

Question

我在我的代码中使用了这些东西，但没有一个起作用。请建议我任何其他方法来解决这个问题。

// #1
if ("${actionBean.backgroundImage}" != null){
    $(document.body).css("pointer-events", "none");
    $(document.body).css("cursor", "default");
    $(document.body).css("background", "url('${actionBean.backgroundImage}') no-repeat fixed center -80px / cover !important");
} 

// #2
if ("${actionBean.backgroundImage}" != null){
    $('html, body').css("pointer-events", "none");
    $('html, body').css("cursor", "default");
    $('html, body').css("background", "url('${actionBean.backgroundImage}') no-repeat fixed center -80px / cover !important");
}

// #3
if ("${actionBean.backgroundImage}" != null){
    $("body").css("pointer-events","none");
    $("body").css("cursor","default");
    $("body").css("background", "url('${actionBean.backgroundImage}') no-repeat fixed center -80px / cover !important");
}

// #4
if ("${actionBean.backgroundImage}" != null){
    $(body).css("pointer-events", "none");
    $(body).css("cursor", "default");
    $(body).css("background", "url('${actionBean.backgroundImage}') no-repeat fixed center -80px / cover !important");
}

Answer 1

尝试使用背景的单独属性，例如:

$(body).css("background", "no-repeat fixed center -80px / cover !important");

$(body).css("background-image", "url('${actionBean.backgroundImage}')");

并且这必须包含在正文下方。