当我点击textarea顶部的按钮时,它会打开下面的codepen示例中显示的超链接模式或图像插入模式。
我可以创建和插入链接和图像。
当我创建链接或图像并单击“保存模式”时,预览不会立即显示我必须按下textarea中的某个键以查看预览中的新更改。
问题:当我从我的引导程序模式中添加新的超链接或图像时 并单击“保存”如何确保更改显示在预览中 马上。使用 showdown.js
脚本
$("#message").on('keyup paste copy change', function() {
var text = document.getElementById('message').value,
target = document.getElementById('showdown'),
converter = new showdown.Converter({parseImgDimensions: true}),
html = converter.makeHtml(text);
target.innerHTML = html;
});
完整脚本
$('#button-link').on('click', function() {
$('#myLink').modal('show');
});
$('#button-image').on('click', function() {
$('#myImage').modal('show');
});
$('#button-smile').on('click', function() {
$('#mySmile').modal('show');
});
$('#myLink').on('shown.bs.modal', function() {
var textarea = document.getElementById("message");
var len = textarea.value.length;
var start = textarea.selectionStart;
var end = textarea.selectionEnd;
var selectedText = textarea.value.substring(start, end);
$('#link_title').val(selectedText);
$('#link_url').val('http://');
});
$('#myImage').on('shown.bs.modal', function() {
$("#image_url").attr("placeholder", "http://www.example.com/image.png");
});
$("#save-image").on('click', function(e) {
var textarea = document.getElementById("message");
var len = textarea.value.length;
var start = textarea.selectionStart;
var end = textarea.selectionEnd;
var selectedText = textarea.value.substring(start, end);
var counter = findAvailableNumber(textarea);
var replace_word = '![enter image description here]' + '[' + counter + ']';
if (counter == 1) {
if ($('input#image_width').val().length > 0) {
var add_link = '\n\n' + ' [' + counter + ']: ' + $('#image_url').val() + ' =' + $('input#image_width').val() + 'x' + $('input#image_height').val();
} else {
var add_link = '\n\n' + ' [' + counter + ']: ' + $('#image_url').val();
}
} else {
var add_link = '\n' + ' [' + counter + ']: ' + $('#image_url').val();
}
textarea.value = textarea.value.substring(0, start) + replace_word + textarea.value.substring(end,len) + add_link;
});
$("#save-link").on('click', function(e) {
var textarea = document.getElementById("message");
var len = textarea.value.length;
var start = textarea.selectionStart;
var end = textarea.selectionEnd;
var selectedText = textarea.value.substring(start, end);
var counter = findAvailableNumber(textarea);
if ($('#link_title').val().length > 0) {
var replace_word = '[' + $('#link_title').val() + ']' + '[' + counter + ']';
} else {
var replace_word = '[enter link description here]' + '[' + counter + ']';
}
if (counter == 1) {
var add_link = '\n\n' + ' [' + counter + ']: ' + $('#link_url').val();
} else {
var add_link = '\n' + ' [' + counter + ']: ' + $('#link_url').val();
}
textarea.value = textarea.value.substring(0, start) + replace_word + textarea.value.substring(end,len) + add_link;
});
function findAvailableNumber(textarea){
var number = 1;
var a = textarea.value;
if(a.indexOf('[1]') > -1){
//Find lines with links
var matches = a.match(/(^|\n)\s*\[\d+\]:/g);
//Find corresponding numbers
var usedNumbers = matches.map(function(match){
return parseInt(match.match(/\d+/)[0]); }
);
//Find first unused number
var number = 1;
while(true){
if(usedNumbers.indexOf(number) === -1){
//Found unused number
return number;
}
number++;
}
}
return number;
}
$("#message").on('keyup paste copy change', function() {
var text = document.getElementById('message').value,
target = document.getElementById('showdown'),
converter = new showdown.Converter({parseImgDimensions: true}),
html = converter.makeHtml(text);
target.innerHTML = html;
});
$(function () {
$('[data-toggle="tooltip"]').tooltip()
})
答案 0 :(得分:1)
只需触发keyup
$("#save-link").on('click', function(e) {});
事件即可
我假设jQuery设置值不会触发$("#message")
$("#message").trigger('keyup');
刚刚在codepen上测试并且工作正常,
$("#save-link").on('click', function(e) {
//All your code
// ....
$("#message").trigger('keyup');
});
我希望这会有所帮助!!