do{ var year1=parseInt(prompt("請(qǐng)輸入員工的入職年份")); if (isNaN(year1)) { alert("請(qǐng)輸入正確的年份"); }else if(year1<0){ alert("請(qǐng)輸入公元前年份"); }else if(year1.toString().length!=4){ alert("請(qǐng)輸入四位數(shù)字年份"); }else("請(qǐng)輸入員工入職年份"); break; }while( (isNaN(year1))||year1<0||(year1.toString().length!=4) );
這個(gè)do while循環(huán)的條件怎么寫(xiě)？
祀未
2017-04-20 23:34:00
