我有以下输入标记:
<input type="text" id="title" class="title" maxlength="20>
我需要在用户输入时将“day”附加到框中文本的末尾。这是如何用jQuery完成的?
我试过这个:
$('#title').on('keyup', function() {
this.value = this.value+' day';
});
但它不起作用。
答案 0 :(得分:3)
使用jQuery在末尾附加文本,然后将插入符号移动到所需位置:
$('#title').on('keyup', function(e) {
// Ignore if backspace is pressed
if(e.keyCode == 46){
return false;
}
// Set the value based on the current value length
// If it's longer than 3, "day" is already appended
this.value = (this.value.length<3)?this.value+="day":this.value;
// Move caret to the latest added character
var caretPos = this.value.length-3;
if(this.createTextRange) {
var range = this.createTextRange();
range.move('character', caretPos);
range.select();
}
else {
if(this.selectionStart) {
this.focus();
this.setSelectionRange(caretPos, caretPos);
}
else
this.focus();
}
});