1.for循环支持break和continue
constarr=[ 1,2,3,4,5 ] for (leti=0; i arr.length; I(if ) arr (I )==1) continue ) else if (arr ) I )==4) break (else ) console.log(arr ) I ) }/) ) ) )
constarr=[ 1,2,3,4, 5]arr.foreach(function(item ) console.log (item ) )/1 )2)3)4)5. everyconstarr=[5] arr.every (funsory )
支持break和continue
constarr=[ 1,2,3,4,5 ] arr.extra=100 for (letindexinarr ) if ) index==2) continue (console.log ) arr
for(letitemofarr ) console.log (item ) }