[Flash开发笔记] 自定义ActionScript中的trim函数,取回车函数,字节换算函数
我们知道vbs中有个trim的函数,用来取掉一个字符串两头的空格,as中没有,我们可以自定义一个:
//取掉字符串的前后空格
function trim(returnString) {
for (; returnString.charCodeAt(0) == 0x20; returnString=returnString.substr(1)) {
}
for (; returnString.charCodeAt(returnString.length-1) == 0x20; returnString=returnString.substr(0, returnString.length-1)) {
}
return returnString;
}
function trim(returnString) {
for (; returnString.charCodeAt(0) == 0x20; returnString=returnString.substr(1)) {
}
for (; returnString.charCodeAt(returnString.length-1) == 0x20; returnString=returnString.substr(0, returnString.length-1)) {
}
return returnString;
}
//取掉字符串的前后回车
public static function trimEnter(returnString) {
for (; returnString.substr(0, 1) == String.fromCharCode(13); returnString=returnString.substr(1)) {
}
for (; returnString.substr(returnString.length-1, 1) == String.fromCharCode(13); returnString=returnString.substr(0, returnString.length-1)) {
}
return returnString;
}
这个也常用:public static function trimEnter(returnString) {
for (; returnString.substr(0, 1) == String.fromCharCode(13); returnString=returnString.substr(1)) {
}
for (; returnString.substr(returnString.length-1, 1) == String.fromCharCode(13); returnString=returnString.substr(0, returnString.length-1)) {
}
return returnString;
}
//字节换算KB,MB
function GetSizeType(size:Number) {
if (size<1024) {
return int(size*100)/100+" bytes";
}
if (size<1048576) {
return int((size/1024)*100)/100+"KB";
}
if (size<1073741824) {
return int((size/1048576)*100)/100+"MB";
}
return int((size/1073741824)*100)/100+"GB";
}
验证输入的内容是否为数字:function GetSizeType(size:Number) {
if (size<1024) {
return int(size*100)/100+" bytes";
}
if (size<1048576) {
return int((size/1024)*100)/100+"KB";
}
if (size<1073741824) {
return int((size/1048576)*100)/100+"MB";
}
return int((size/1073741824)*100)/100+"GB";
}
if(isNaN("要验证的内容") == true){
trace("输入了非数字");
}else{
trace("输入了数字");
}
trace("输入了非数字");
}else{
trace("输入了数字");
}