<script> var arr=["","hello","","world"," ","goodboy"]; var trim = function(s) { return s.replace(/\s+/g,'');} var re = []; for(var i = 0, len = arr.length; i < len; i++) { if(trim(arr[i]).length > 0) re[re.length] = arr[i]; } alert(re); </script>
arr = $.grep(arr, function () { return this != ''; }
var arr=["","hello","goodboy"]; for(var i = 0; i < arr.length; i++) { if(arr[i].length == 0) arr.splice(i,1); } alert(arr);
JQ可以像楼上 var arr=["","hello","","world"," ","goodboy"]; alert($.grep(arr, function(n) {return $.trim(n).length > 0;}));
<script language=javascript>
Array.prototype.del=function(n) { //n表示第几项,从0开始算起。
//prototype为对象原型,注意这里为对象增加自定义方法的方法。
if(n<0) //如果n<0,则不进行任何操作。
return this;
else
return this.slice(0,n).concat(this.slice(n+1,this.length));
/*
concat方法:返回一个新数组,这个新数组是由两个或更多数组组合而成的。
这里就是返回this.slice(0,n)/this.slice(n+1,this.length)
组成的新数组,这中间,刚好少了第n项。
slice方法: 返回一个数组的一段,两个参数,分别指定开始和结束的位置。
*/
}
别人写的
<script>
var arr=["","hello","","world"," ","goodboy"];
var trim = function(s) { return s.replace(/\s+/g,'');}
var re = [];
for(var i = 0, len = arr.length; i < len; i++) {
if(trim(arr[i]).length > 0) re[re.length] = arr[i];
}
alert(re);
</script>
for(var i = 0; i < arr.length; i++) {
if(arr[i].length == 0) arr.splice(i,1);
}
alert(arr);
JQ可以像楼上
var arr=["","hello","","world"," ","goodboy"];
alert($.grep(arr, function(n) {return $.trim(n).length > 0;}));