<!DOCTYPE??HTML>
<html?>
<head>
<meta?http-equiv="Content-Type"?content="text/html;?charset=utf-8"?/>
<title>數(shù)組</title>
<script?type="text/javascript">
?//創(chuàng)建數(shù)組
?var??arr?=?['*','##',"***","&&","****","##*"];
?//顯示數(shù)組長度
?var?length?=?arr.length;
?arr[7]?=?"**";
?
?//將數(shù)組內(nèi)容輸出，完成達到的效果。
?var?row?=?4;
?var?row_count?=?0;
?for(var?i=0;?i<length;?i++){
????row_count++;
????if(row_count<=row){
????????if(arr[i].length?==?i+1){
????????????if(arr[i].indexOf('*')?===?-1)
????????????????document.write(arr[7]+"<br>");
????????????else?if(arr[i].length?==?(i+1)){
????????????????document.write(arr[i]+"<br>");
????????????}
????????}
????????else{
????????????for(var?j=0;?j<i+1;?j++){
????????????????document.write("*");
????????????}
????????????document.write("<br>");
????????}
????}
?}
</script>
</head>
<body>
</body>
</html>
2015-12-17
?//創(chuàng)建數(shù)組
?var ?arr=['*','##',"***",'&&','****','##'];
?arr[7]="**";
?//顯示數(shù)組長度
document.write(arr.length+"</br>");
?
?//將數(shù)組內(nèi)容輸出，完成達到的效果。
document.write(arr[0]+"</br>")
document.write(arr[7]+"</br>")
document.write(arr[2]+"</br>")
document.write(arr[4]+"</br>")