英文:
Javascript object value returning undefined with string key
问题
Sure, here's the translated code:
所以，我试图根据其他元素的属性来更新元素的类。我能够正确获取所需的值，例如alignment = "start"但是，当我尝试从对象中获取其关联的值时，它返回undefined，可能的原因是什么。此外，是否有更好的方法来实现这一目标。// 更新对齐按钮var alignmentMap = {"end": "bi-text-right","start": "bi-text-left","center": "bi-text-center","justify": "bi-justify"}var alignment = $(activeId + " .component-content").css("text-align");console.log(alignmentMap[alignment]);alignment = alignmentMap[alignment];$("#cp-align .settings-container i").attr("class", "bi " + alignment);
I've translated the code part and removed the unnecessary instructions.
英文:
So, I'm trying to update the class of an element based on the properties of some other element. I am able to correctly get the required value, for instance
alignment = "start"
But when I try to get its associated value from the object, it returns undefined, what might be the possible reasons for that. Also ,is there a better way to achieve this.
//Update Alignment Buttonvar alignmentMap = {"end": "bi-text-right","start": "bi-text-left","center": "bi-text-center","justify": "bi-justify"}var alignment = $(activeId+" .component-content").css("text-align");console.log(alignmentMap[alignment]);alignment = alignmentMap[alignment];$("#cp-align .settings-container i").attr("class", "bi "+alignment);
答案1
得分: 0
以下是代码中需要翻译的部分：
-
Available text-align property in CSS are
left,right,center,justify. 如果 text-align CSS 属性设置为text-align: left，那么alignment的值应为left，并且alignmentMap对象中相应的键应为left，而不是 start。对于right也是一样的。 -
var alignmentMap = {
"right": "bi-text-right",
"left": "bi-text-left",
"center": "bi-text-center",
"justify": "bi-justify"
} -
var alignment = $(activeId+ " .component-content").css("text-align");
-
console.log(alignmentMap[alignment]);
-
alignment = alignmentMap[alignment];
-
$("#cp-align .settings-container i").attr("class", "bi " +alignment);
英文:
Available text-align property in CSS are left, right, center, justify. If the text-align CSS property is set to text-alight: left, then the alignment value should be left and corresponding key in the alignmentMap object should be left, not start. Same for right as well.
//Update Alignment Buttonvar alignmentMap = {"right": "bi-text-right","left": "bi-text-left","center": "bi-text-center","justify": "bi-justify"}var alignment = $(activeId+" .component-content").css("text-align");console.log(alignmentMap[alignment]);alignment = alignmentMap[alignment];$("#cp-align .settings-container i").attr("class", "bi "+alignment);</details>
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