几个常用的Javascript函数
// *******************************************************// replacements for unsupported array functions (because arrayname.push(var)
// and arrayname.pop() are not implemented in IE until version 5.5)
function thearrayisgood(thearray,i) {
if ((thearray == "undefined") || (thearray == "") || (thearray == null))
return false;
else
return true;
}
function getarraysize(thearray) {
// replacement for arrayname.length property
for (i = 0; i < thearray.length; i++) {
if ((thearray == "undefined") || (thearray == "") || (thearray == null))
return i;
}
return thearray.length;
}
function arraypush(thearray,value) {
// replacement for arrayname.push(value)
thearraysize = getarraysize(thearray);
thearray = value;
return thearray;
}
function arraypop(thearray) {
// replacement for arrayname.pop()
thearraysize = getarraysize(thearray);
retval = thearray;
delete thearray;
thearray.length--; <<==我加了这句，很关键，否则出错
return retval;
}
// *******************************************************
另外给出网上几个老外写的
function Array_pop() {
var response = this
this.length--
return response
}
if (typeof(Array.prototype.pop) == "undefined") {
Array.prototype.pop = Array_pop
}
function Array_push() {
var A_p = 0
for (A_p = 0; A_p < arguments.length; A_p++) {
this = arguments
}
return this.length
}
if (typeof Array.prototype.push == "undefined") {
Array.prototype.push = Array_push
}
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