本文为电脑编程入门自学的小教程.string.concat()的作用是拼接多个字符串返回拼接后的字符串,它的特点是用二进制模式拼接,兼容参数为null的情况.下面用实例源码来演示:
import win.ui;
/*DSG{{*/
var winform = win.form(text="简码编程 jianma123.com";right=311;bottom=178)
winform.add(
button={cls="button";text="1与2拼接";left=20;top=109;right=107;bottom=141;z=2};
button2={cls="button";text="1与null拼接";left=114;top=109;right=197;bottom=141;z=4};
button3={cls="button";text="全null拼接";left=204;top=109;right=287;bottom=141;z=5};
edit={cls="edit";text="123";left=16;top=16;right=296;bottom=48;edge=1;multiline=1;z=1};
edit2={cls="edit";text="abc";left=16;top=55;right=296;bottom=87;edge=1;multiline=1;z=3}
)
/*}}*/
winform.button.oncommand = function(id,event){
var str1 = winform.edit.text;
var str2 = winform.edit2.text;
winform.msgbox(string.concat(str1,str2),"返回:")
}
winform.button2.oncommand = function(id,event){
var str1 = winform.edit.text;
var str2 = null
winform.msgbox(string.concat(str1,str2),"返回:")
}
winform.button3.oncommand = function(id,event){
var str1 = null
var str2 = null
winform.msgbox(string.concat(str1,str2),"返回:")
}
winform.show()
win.loopMessage();