var obj = '';
for(var i=0;i<3;i++)
{
obj += "+ \"<col id='"+i+"'>\"";
}
alert(obj.substr(1))=========================================
不知道合不合适~
for(var i=0;i<3;i++)
{
obj += "+ \"<col id='"+i+"'>\"";
}
alert(obj.substr(1))=========================================
不知道合不合适~
var obj1 = "<col id='1'>"+"<col id='2'>"+"<col id='3'>";
obj = '';
for(var i=1;i<=3;i++)
{
obj += "<col id='"+i+"'>";
}
alert(obj)
alert(obj==obj1)
</script>
len=10
for(var i=1;i<=len;i++)
{
if(i!=len)
obj += "\"<col id='"+i+"'>\"+";
else
obj += "\"<col id='"+i+"'>\"";
}
alert(obj)</script>
var obj = '';
var a1 = '"';
var a2 = '+';
for(var i=1;i<=3;i++)
{
obj += a2 + a1 + "<col id='"+i+"'>" + a1;
}
var a3 = obj.substring(1);
alert(a3);
var obj = "";
for(var i = 1; i <= 3; i++)
{
if(obj == "")
{ obj = "\"<col id='" + i + "'>\""; }
else
{obj += "+\"<col id='" + i + "'>\"";}
}
alert(obj)
</script>
测试了结果,貌似和LZ要求一样了
window.fr
obj = '';
len=10
for(var i=1;i<=len;i++)
{
if(i!=len)
obj += "\"<col id='"+i+"'>\"+";
else
obj += "\"<col id='"+i+"'>\"";
}
var a="<root>"+eval(obj)+"</root>";
alert(a);
</script>
window.fr
obj = '';
len=10
for(var i=1;i<=len;i++)
{
if(i!=len)
obj += "\"<col id='"+i+"'>\"+";
else
obj += "\"<col id='"+i+"'>\"";
}
var a="<root>"+eval(obj)+"</root>";
alert(a);
</script>