Question

如果在减号之间，我有这个脚本与textarea中的keyup上的文本匹配。

    $('#notes').keyup(function() { // notes is the id of the textarea
        var regex = /\-([^\)]+)\-/gmi; // it gets the text between minus sign. Example: -text-
        var myValue = $(this).val();
        if(myValue.match(regex)){
            var reference = myValue.match(regex);
            $.ajax({
                async: false, 
                type: "POST",
                url: "scripts/script.php",
                data: { "reference" : reference },
                success: function(data) {   
                    // I need to replace the text matched by the regex with data in the textarea.
                    // I need to stop the ajax calling after success or call it only if regex is matched
                }
            }); 
        }
    });

当正则表达式匹配文本时，它会向脚本发送ajax post调用，该脚本在数据库中搜索世界并返回定义。我需要用数据替换正则表达式匹配的文本，数据是由数据库提取的。

此外，我只想在匹配正则表达式时启动ajax POST调用。它只是第一次工作。在第一场比赛后，它仍然为每个键盘发送呼叫。

Answer 1

Try the below code.

var triggerTime;
$("#notes").keyup(function() { // notes is the id of the textarea
        clearTimeout(triggerTime);
        var myValue = $(this).val();
        triggerTime = setTimeout(function(){
            var regex = /\-([^\)]+)\-/gmi; // it gets the text between minus sign. Example: -text-
            if(myValue.match(regex)){
                var reference = myValue.match(regex);
                $.ajax({
                    async: false, 
                    type: "POST",
                    url: "scripts/script.php",
                    data: { "reference" : reference },
                    success: function(data) {   
                        // I need to replace the text matched by the regex with data in the textarea.
                        // I need to stop the ajax calling after success or call it only if regex is matched
                    }
                }); 
            }
        }, 3000);// Call request in 3 second
    });

This is the optimized version of your code. it will wait for users to complete, and in inactivity of 3 seconds, it will generate an Ajax call.

you can change the frequency to 2000 OR 1000 (2 second and 1 second respectively).

Answer 2

我解决了将 contenteditable =＆＃34; true＆＃34; 添加到textarea的问题。在最终的jquery代码下面：

    var textInput = $("#notes"); // the ID of the textarea
    var triggerTime;
    $("#notes").keyup(function() { // notes is the id of the textarea
        clearTimeout(triggerTime);
        var myValue = $(this).text();
        triggerTime = setTimeout(function(){
            var regex = /\-([^\)]+)\-/gmi; // it gets the text between minus sign. Example: -text-
            if(myValue.match(regex)){
                var newValue;
                var reference = myValue.match(regex);
                $.ajax({
                    async: false, 
                    type: "POST",
                    url: "scripts/parser.php",
                    data: { "reference" : reference },
                    success: function(data) {       
                        newValue = data;    
                        console.log(newValue);
                        $('.textarea').html(function() {
                            return $(this).text().replace(reference[0], '<strong>' + newValue + '</strong>');
                        });
                    }
                }); 
            }
        }, 1000);// Call request in 1 second
    });

替换html textarea

2 个答案: