使用JavaScript计数textarew中的字符在firefox中不起作用！为什么? [英] using javascript to count chars in a textarew is not working in firefox !! why?

问题描述

您好，我想尝试计算字符和单词，并确定其是否在常规textarea控件(usig javascript)中使用heb或eng，但是在firefox中这些都不起作用，有人可以帮助我吗?

我的代码:

hello im trying to count chars ans words and determine if its heb or eng in a regular textarea control, usig javascript, but none of this works in firefox, can someone please help me?

my code :

<script type="text/javascript">

    function langChk()
    {
        var str = new String(document.smsform.txt2.innerText.toString());
        var i = 0;
        var cnt = str.length;
        if(cnt == 0)
        {
            document.all('msgCounter').innerHTML = "0"
            document.all('chrCounter').innerHTML = "0"
        }

        for(i=0 ; i < cnt ; i++) // will not start unless cnt > 0
        {
            var ch = parseInt(str.charCodeAt(i));

            if(ch >= 1488 && ch <=1514) //chk 4 heb

            {

                counter(1,cnt);

                break;

            }

            else

                counter(2,cnt);

        }

    }



    function counter(method,cnt)    //accepts lang method and calc num of msgs

    {



        switch(method)

        {

            case 1 :

                if(cnt > 0 && cnt <= 70)

                    document.all('msgCounter').innerHTML = "1";

                if(cnt > 70 && cnt <= 134)

                    document.all('msgCounter').innerHTML = "2";

                if(cnt > 134 && cnt <= 201



</script>

有人可以在这里指出问题吗? (我知道代码块在中间被切掉了，好)
noam

can anyone point on a problem here guys ?? (i know the code block is cut in the middle, ok)
noam

推荐答案

请参见 http://simonwillison.net/2003/Aug/11/documentAll/ [ ^ ](以及许多其他内容)来说明为什么不应该使用document.all来代替使用document.getElementByID的原因.
document.all是过时的IE4怪胎.

干杯，
彼得

See http://simonwillison.net/2003/Aug/11/documentAll/[^] (and many others) for why you shouldn''t use document.all Use document.getElementByID instead.
document.all is an obsolete IE4 monstrosity.

Cheers,
Peter

第一个引起我注意的问题是使用属性innerText. W3C的官方资源为textContent；与IE不同，Mozilla倾向于支持这些标准.请参阅:
https://developer.mozilla.org/En/DOM/Node.textContent [ ^ ].

一种跨浏览器兼容性的技巧是通过以下方式同时使用两者:

First problem which caught my eyes was using the property innerText. The official W3C property is textContent; and Mozilla tends to support the standards, unlike IE. Please see:
https://developer.mozilla.org/En/DOM/Node.textContent[^].

One cross-browser compatibility trick is using both in the following way:

myElement = document.smsform.txt2;
str = myElement.textContent || myElement.innerText;

—SA

—SA

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