期望赋值或函数调用，却看到了一个表达式.eslintno-unused-expressions [英] Expected an assignment or function call and instead saw an expression.eslintno-unused-expressions

问题描述

我在函数中使用了三元运算符.但是 eslint 在这方面抛出了错误.请帮我解决这个问题.

Hi I am using a ternary operator inside a function. But eslint throws error on this. Pls help me to fix this.

  const Test = (showBtn, bubbleId, latitude, longitude, zoom, drillLevel) => {
    setShowBtn(showBtn);
    drillLevel === 'area' ? getCitiesData(bubbleId) : getStatesData();
    setViewport({
      ...viewport,
      latitude,
      longitude,
      zoom,
    });
  };

推荐答案

如果您当前的代码有效，那么完全避免使用条件运算符并使用 if/else 可能更合适 代替:

If your current code works, it would probably be more appropriate to avoid the conditional operator entirely and use if/else instead:

if (drillLevel === 'area') getCitiesData(bubbleId)
else getStatesData();

这样，您实际上没有任何未使用的表达式，这是修复此类 linter 警告的正确方法.

This way, you don't actually have any unused expressions, which is the right way to fix this sort of linter warning.

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