As a parallel importer, even if you learn 1 1 = 3, you still have to record it! Wrong, it’s 2
Learning record:
in js
for(var i=1;i<5;i++){
if(i==3){
break; // 使用break，弹出2次提示分别为1,2；如果使用continue，则会弹出3次，分别是1,2,4
}
alert(i);
}Loop, to exit the loop, use break; to exit the current loop and continue the next loop, use continue
To implement break in the each() method in jquery, use return false; to continue, use return true
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