个人中心
gpt4 book ai didi

javascript - 在 textarea 中输入时，将垂直条 ("|") 替换为 Devanagari Danda ("।")

转载 作者：数据小太阳 更新时间：2023-10-29 06:11:57 25 4
gpt4 key购买 nike

我想在使用 javascript 在 textarea 中输入竖线 (|) 后立即将其替换为 Devanagari Danda (।)。

首先我尝试了 How to change characters typed in Firefox 上给出的解决方案.但它仅将字符添加到末尾。

所以，我遵循了 http://www.jsfiddle.net/EXH2k/6/ 上给出的解决方案这是 Tim Down 在 Changing the keypress 上建议的还有show different keyboard character from the typed one in google chrome .但它对我不起作用(无论是在 Firefox 还是在 IE 10 中)。

代码:

<!DOCTYPE html>
<html>
<head>
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
    <link type="text/css" rel="stylesheet" href="stylesheet.css" />
    <script type="text/javascript">
        function transformTypedChar(charStr) {
            return charStr == "|" ? "।" : charStr;
        }

        function getInputSelection(el) {
            var start = 0, end = 0, normalizedValue, range,
            textInputRange, len, endRange;

            if (typeof el.selectionStart == "number" && typeof el.selectionEnd == "number") {
                start = el.selectionStart;
                end = el.selectionEnd;
            } else {
                range = document.selection.createRange();

                if (range && range.parentElement() == el) {
                    len = el.value.length;
                    normalizedValue = el.value.replace(/\r\n/g, "\n");

                    // Create a working TextRange that lives only in the input
                    textInputRange = el.createTextRange();
                    textInputRange.moveToBookmark(range.getBookmark());

                    // Check if the start and end of the selection are at the very end
                    // of the input, since moveStart/moveEnd doesn't return what we want
                    // in those cases
                    endRange = el.createTextRange();
                    endRange.collapse(false);

                    if (textInputRange.compareEndPoints("StartToEnd", endRange) > -1) {
                        start = end = len;
                    } else {
                        start = -textInputRange.moveStart("character", -len);
                        start += normalizedValue.slice(0, start).split("\n").length - 1;

                        if (textInputRange.compareEndPoints("EndToEnd", endRange) > -1) {
                            end = len;
                        } else {
                            end = -textInputRange.moveEnd("character", -len);
                            end += normalizedValue.slice(0, end).split("\n").length - 1;
                        }
                    }
                }
            }

            return {
                start: start,
                end: end
            };
        }

        function offsetToRangeCharacterMove(el, offset) {
            return offset - (el.value.slice(0, offset).split("\r\n").length - 1);
        }

        function setInputSelection(el, startOffset, endOffset) {
            el.focus();
            if (typeof el.selectionStart == "number" && typeof el.selectionEnd == "number") {
                el.selectionStart = startOffset;
                el.selectionEnd = endOffset;
            } else {
                var range = el.createTextRange();
                var startCharMove = offsetToRangeCharacterMove(el, startOffset);
                range.collapse(true);
                if (startOffset == endOffset) {
                    range.move("character", startCharMove);
                } else {
                    range.moveEnd("character", offsetToRangeCharacterMove(el, endOffset));
                    range.moveStart("character", startCharMove);
                }
                range.select();
            }
        }

        $("#inputTextArea").keypress(function (evt) {
            if (evt.which) {
                var charStr = String.fromCharCode(evt.which);
                var transformedChar = transformTypedChar(charStr);
                if (transformedChar != charStr) {
                    var sel = getInputSelection(this), val = this.value;
                    this.value = val.slice(0, sel.start) + transformedChar + val.slice(sel.end);

                    // Move the caret
                    setInputSelection(this, sel.start + 1, sel.start + 1);
                    return false;
                }
            }
        });
    </script>
</head>
<body>
    <textarea name="input" id="inputTextArea" rows="10"></textarea>
</body>
</html>

最佳答案

这很简单。用换行符处理等丢弃你的代码，然后这样做:

$(document).ready(function() {
    $('#my-input').on('input', function() {
        var $input = $(this),
            curVal = $input.val();
        var cursorPos = curVal.slice(0, this.selectionStart).length;

        $input.val(curVal.replace(/[|]/g, '।'));
        this.setSelectionRange(cursorPos, cursorPos);
    });
});

工作示例:JSFiddle

关于javascript - 在 textarea 中输入时，将垂直条 ("|") 替换为 Devanagari Danda ("।")，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/19153640/

25 4 0
文章推荐： javascript - 在 jquery 中创建雪花
文章推荐： performance - redis 使用什么传输来发送接收消息
文章推荐： ruby-on-rails - redis_store session 没有过期
文章推荐： javascript - Highchart 不适用于谷歌浏览器
数据小太阳
个人简介

我是一名优秀的程序员,十分优秀！

滴滴打车优惠券免费领取
滴滴打车优惠券
Copyright 2021 - 2024 cfsdn All Rights Reserved 蜀ICP备2022000587号
广告合作:1813099741@qq.com 6ren.com