不为空,空了就替换为其它字符
不为空,空了就替换为其它字符
//例如 panduan('a','-')
function panduan(val, returnDate) {
if (val === undefined || !val || val == 'null' || val == 'undefined') {
return returnDate
} else {
return val
}
}
console.log(panduan(123,'-')) //123
console.log(panduan("",'-')) //-
console.log(panduan("",'###')) //###

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