I've textarea当我添加时我就开始输入tags我在数组中定义，所以根据我的情况应该说in array但这是说not in array这是我的示例代码
$(document).ready(function() {
var tagsArray = new Array("{full_name}", "{email}", "{company}", "{reg_no}", "{address}", "{city}", "{mobile}", "{rec1_full_name}", "{rec1_email}", "{rec2_full_name}", "{rec2_email}");
var txtArea = $("textarea#txtarea").val();
$(document).on("keyup", "#txtarea", function() {
if ($.inArray(txtArea, tagsArray) != -1) {
console.log("in array");
} else {
console.log("not in array");
}
});
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<textarea id="txtarea" name="txtarea" rows="10" cols="50"></textarea>
我刚刚开始输入这段文字This is not what we want {email} {rec1_full_name}虽然我的电子邮件标签是在文本区域中输入的，但它显示的是消息not in array那么如何在打字期间匹配我的标签以及匹配标签后我必须将其颜色更改为蓝色并将字体更改为粗体。
我有一个解决方案给你。希望这会有所帮助。
<!DOCTYPE html>
<html>
<head>
<title></title>
</head>
<body>
<textarea id="txtarea" name="txtarea" rows="10" cols="50"></textarea>
<button id="submitBtn">Submit</button>
<div id="displayContainer"></div>
<style type="text/css">
.bold-blue{
color: blue;
font-weight: bold;
}
</style>
<script src="https://code.jquery.com/jquery-3.2.1.js"
integrity="sha256-DZAnKJ/6XZ9si04Hgrsxu/8s717jcIzLy3oi35EouyE="
crossorigin="anonymous"></script>
<script type="text/javascript">
function inArray(needle, haystack) {
var length = haystack.length;
for(var i = 0; i < length; i++) {
if(haystack[i] == needle) return true;
}
return false;
}
$(document).ready(function() {
var tagsArray = new Array("{full_name}", "{email}", "{company}", "{reg_no}", "{address}", "{city}", "{mobile}", "{rec1_full_name}", "{rec1_email}", "{rec2_full_name}", "{rec2_email}");
$("#txtarea").on('keyup', function(e) {
var tags = $("#txtarea").val().match("{(.*)}");
//check whether the entered tag is valid
for (tag in tags){
if(!inArray(tags[tag], tagsArray)){
if(tags[tag][0] == "{" && tags[tag][tags[tag].length-1] == "}"){
//alert the user that he entered an invalid tag
alert(tags[tag]+" is not a valid tag.");
}
}
}
});
//render the tags blue and bold
$("#submitBtn").on("click", function(){
var tags = $("#txtarea").val().match("{(.*)}");
var text = $("#txtarea").val();
for (tag in tags){
if(tags[tag][0] == "{" && tags[tag][tags[tag].length-1] == "}"){
var newText = text.replace( tags[tag], '<span class="bold-blue">'+tags[tag]+'</span>');
}
}
$("#displayContainer").html( newText );
});
});
</script>
</body>
</html>
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