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in Technique[技术] by (71.8m points)

想判断一个数组不为空与一个字符串不为空

需要两个条件都成立但是不区分成立顺序,就是a先成立然后b在成立或者b先成立a在成立都行


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by (71.8m points)

`
let arr = []
let str = ''
if(arr.length && str.length || str.length && arr.length){}

`


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