shapeconsoleshapeconsole.log("该形状是一个矩形。");caseisQuadrilateral(shape):console.log("该形状是一个四边形。");break;caseisCircle(shape):console.log("该形状是一个圆形。");break;} Specification ECMAScript Language Specification #sec-switch-statement ...
Expression inside switch case statement Ask Question Asked 13 years, 11 months ago Modified 2 years, 5 months ago Viewed 107k times 62 I'm trying to create a switch statement but I can't seem to be able to use an expression that gets evaluated (rather than a set string/integer). I c...
...while(false){ // } 04) for-in语句是一种精准的迭代语句,可以用来枚举对象的属性 for(property in expression){ statement }...例如: 打印出window对象中所有的属性 for(var propName in window){ console.log(propName); } label语句使用label可以在代码中添加标签...
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03) while语句 while(condition){ } 前测试循环语句,即在循环体内的代码被执行之前,就会对出口条件求值。...while(false){ // } 04) for-in 语句 是一种精准的迭代语句,可以用来枚举对象的属性for(property in expression){ statement }...例如: 打印出window对象中所有的属性 for(var propName in window)...