Boolean(“false") 返回 true .. 任何替代方法? [英] Boolean("false") returns true.. any alternative?

问题描述

我正在使用 jquery 将真假字符串写入数据-html 属性.但是，当我将 false 写入其中一个属性，然后将其检查为 false 时，它​​返回 true.我也在网上读到它应该这样做，这完全没有意义.

I am using jquery to write true and false strings to data- html attributes. However when I write false to one of the attributes, and then check it it false, it returns true. I also read online that it supposed to do that, which really makes no sense at all.

有没有人有替代品?任何帮助将非常感激！

Does anyone have an alternative? Any help would be really appreciated!

(function() {
    // $(".opt-header").click(function () {
    $(document).on("click", ".opt-header", function() {
        console.log($(this).attr("data-is-panel-activated"));
        var is_activate = Boolean($(this).attr("data-is-panel-activated"));
        $(this).siblings(":not(.opt-group-toggle)").slideToggle(300);
        console.log(is_activate);
        if (is_activate) {
            $(this).find(".fa-angle-right").replaceWith("<i class='fa fa-angle-down'></i>");
            $(this).attr("data-is-panel-activated", "false");
        } else {
            $(this).attr("data-is-panel-activated", "true");
            $(this).find(".fa-angle-down").replaceWith("<i class='fa fa-angle-right'></i>");
        }
    })
})();

推荐答案

Boolean('false') 将返回 true 因为字符串 'false' 是真的.

Boolean('false') will return true because the string 'false' is truthy.

您可以运行检查以查看字符串是否等于false":

You could just run a check to see if the string equals 'false':

if ($(this).attr("data-is-panel-activated") === 'false') {
   .....
}

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