我尝试动态填充select并在循环中调用truncate函数...如下所示。我想将选项文本向下发送到函数,如果长度超过20个字符,则将其截断,并在将其添加到选项并附加到选项之前将其发回。
$(function() {
for (var i = 0; i < response.option.length; i++) {
var truncatedText = truncate();
var text = response.option[i].name;
truncate(text);
$("select").append("<option>" + truncatedText.text + "</option>");
}
});
function truncate(text) {
var textLength = text.length;
if (textLength > 20) {
text = text.substr(0, 20) + '...';
}
return text;
}
答案 0 :(得分:0)
在jsfiddling一段时间后,我找到了一个有效的解决方案。有更优雅的方式吗?
https://jsfiddle.net/kirkbross/pcb0a3Lg/9/
var namesList = ['johnathan', 'tim', 'greggory', 'ashton', 'elizabeth'];
$(function() {
for (var i = 0; i < 5; i++) {
var name = namesList[i];
$('#names').append('<option>' + name + '</option>');
}
var selected_option = $('#names').find('option:selected').val();
var truncated = truncate(selected_option);
$('option:selected').text(truncated.new);
$('#names').change(function(){
var selected_option = $(this).find('option:selected').val();
var truncated = truncate(selected_option);
$('option:selected').text(truncated.new);
});
});
function truncate(selected_option) {
var nameLength = selected_option.length
if (nameLength > 4) {
selected_option = selected_option.substr(0, 4) + '...';
}
return {new: selected_option}
}