所有其他值都被视为真实,包括: 0- 数字零(整数或其他) ""- 空字符串 \n- 仅包含空格的字符串 - 空数组 {}- 空哈希 例如,以下代码: def check_truthy(var_name, var) is_truthy = var ? "truthy" : "falsy" puts "#{var_name} is #{is_truthy}" end check_truthy("
Truthy and Falsy Values Falsy Values: undefined, null, 0, '', NaN(not a number) Truthy values: NOT falsy values varheight; height= 0;//return else valuevarname; name= '';//return else valuevartestNumber; testNumber= 1;//return if valueif(height) { console.log("Variable is defined"...
Sure, here are some examples of truthy and falsy values in JavaScript. Falsy values include: false, 0, -0, 0n (BigInt zero), “”, null, undefined, and NaN. Truthy values could be any other values that are not falsy, including “0” (a string containing a single zero), “false”...
Truthy and Falsy ThoughLiquidis platform-independent, there’recertain differenceswiththe Ruby version, one of which is thetruthyvalue. The Truth Table According toShopify documenteverything other thanfalseandnilis truthy. But in JavaScript we have a totally different type system, we have types ...