[英]creating a for-loop using Javascript?
I have a problem creating a for-loop using Javascript. 我在使用Javascript创建for循环时遇到问题。 It seems everyting is fine for me but still I didn't get what I want.
看来一切对我来说都很好,但我仍然没有得到想要的东西。
Take a look please to this code to understand more: 请看下面的代码,以了解更多信息:
The HTML form code: HTML表单代码:
<form name="myform"> <textarea name="inputtext" cols="100%" rows="10%"></textarea><br /> <input type="radio" name="options" value="javascript" checked> Option1 <br /> <input type="radio" name="options" value="windows"> Option2<br /> <input type="button" value="Do it" onClick="generate();"><br /> <textarea name="outputtext" cols="100%" rows="10%"></textarea><br /> </form>
The Javascript code: Javascript代码:
function generate() { var code = ""+document.myform.inputtext.value; if (document.myform.options[0].checked) { document.myform.outputtext.value = escape(code); } else { var result= "2- "; for(int i=0; i<code.length; i++) { //There will be some logic to decide if to add the char or not. result+=code.charAt(i); } document.myform.outputtext.value = result; } }
The problem is not clear for me. 这个问题对我来说还不清楚。 However, when I try to comment out the for-loop, everything works fine !
但是,当我尝试注释掉for循环时,一切正常!
Any ideas? 有任何想法吗?
Javascript中没有int
数据类型(或所有用于声明变量的数据类型)。
for(var i=0; i<code.length; i++) {
There is also an Object-oriented solution to this. 为此,还有一个面向对象的解决方案。
var generate = {
loop: function() {
var code = ""+document.myform.inputtext.value;
if (document.myform.options[0].checked) {
document.myform.outputtext.value = escape(code);
}
else {
var result= "2- ";
//CHANGE THE INT(I assume Java) DATATYPE TO A LOCAL VARIABLE USING THE var KEYWORD TO KEEP THE SCOPE IN THE FOR LOOP
//RECURSION CAN BE QUICKER
for(var i=0; i<code.length; i++) {
//There will be some logic to decide if to add the char or not.
result+=code.charAt(i);
}
document.myform.outputtext.value = result;
}
}
generate.loop();
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