freeCodeCamp/guide/chinese/certifications/javascript-algorithms-and-d.../basic-javascript/use-conditional-logic-with-.../index.md

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Use conditional logic with If statements 对If语句使用条件逻辑

对If语句使用条件逻辑

问题解释:

在函数内部创建一个if语句"Yes, that was true"如果参数wasThatTruetrue则返回"Yes, that was true" "No, that was false"否则返回"No, that was false"

提示1

您的if语句将评估您的(condition)true还是false并执行(如果它的计算结果为true )后面{statement}{statement}

现在尝试解决问题

提示2

如果您的(condition)求值为false ,则不会执行{statement} ,函数将返回下一个return语句。

现在尝试解决问题

扰流板警报!

提前解决!

基本代码解决方案

// Setup 
 function trueOrFalse(wasThatTrue) { 
 
  // Only change code below this line. 
 
  if (wasThatTrue) 
   { 
    return "Yes, that was true"; 
    } 
  return "No, that was false"; 
 
  // Only change code above this line. 
 } 

代码说明

该函数首先计算if条件(wasThatTrue)计算结果为true 。如果是则ir返回花括号之间的语句。如果没有则返回它们之外的下一个return语句。

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