JavaScript implements a numerical addition function _javascript technique

No more nonsense, just give me the code.

Js

<script type= "Text/javascript" > Function Sum (arg1,arg2) {//numeric addition function var sarg1 = new String (arg1);/////Convert incoming arguments to strings for argument Number check var sarg2 = new String (ARG2); Convert parameter 2 to character type if ((sarg1== "") | | (sarg2== "")) serial = 1000001; "; Error description Information} else {e0.message = "sum function argument illegal: 2nd argument is empty!"
";
} throw E0; Throw error message} for (i=0;i<sarg1.length;i++) {//parameter legality check for (j=0;j<10;j++) {//Check all characters if (Sarg1.charat (i) ==j)// If not the number, throw the error message {break;//Jump Out of loop} else {if (j==9)//When query has been made to the number 9 o'clock {var e1 = new error ()////Error Message object E1. serial = 1000001; Error number E1.message = "Sum function parameter: + SARG1 +" is an illegal number! ";
Error description information throw E1;
for (k=0;k<sarg2.length;k++)//Check parameter 2 is numeric {for (l=0;l<10;l++) {//from 0 to 9 per comparison if (Sarg2.charat (k) ==l)//If the number of 0~9
{break;} else {if (l==9)///only contains non-numeric error message {var e2 = new error ();//Create Error Object E2. serial = 1000001; Exception number e2.message = "Sum function parameter: + SARG2 +" is an illegal number!
";
throw E2; }}}Number (ARG1) + number (ARG2); Parameters are correct returns the two-worth and} function Button1_onclick () {//"COMPUTE" button's stand-alone event handler try{var Text1 = document.getElementById ("Text1"); var Te
XT2 = document.getElementById ("Text2");
var Text3 = document.getElementById ("Text3"); var sum = SUM (text1.value,text2.value); Call function to compute text3.value = SUM; Output calculation result} catch (e) {//error occurred output error message alert (e.message);//Output exception information if (E.serail = 1000001)///If 1,000,001th error {alert (E.MESSAG 
e);
e = null;

 }} </script>

Html:

<input type= "text" id= "Text1" style= "width:84px" maxlength= "/>"
+ <input type= "
text" id= "Text2" Style= "width:75px" maxlength= "/>
= <input type=
" text "id=" Text3 "style=" width:69px ">
< Input type= "button" id= "Button1" value= "calculation" onclick= "return Button1_onclick ()"/>

The above mentioned is the entire content of this article, I hope you can enjoy.