JS数组splice操作实例分析

<script>
var narr=['a','b','c','d','e'];
console.log(narr);
for (var j=0;j<narr.length;j++){
  console.log(j+'=>'+narr[j]);
};
console.log(narr);
for (var j=0;j<narr.length;j++){
  console.log(j+'=>'+narr[j]);
  if (narr[j] == 'c'){
     narr.splice(j,1);
  };
};
console.log(narr);
for (var j=0;j<narr.length;j++){
  console.log(j+'=>'+narr[j]);
};
</script>