input仅仅输入数字，避免弹出软键盘。使用readonly

1.布局

//html
<input id="timeInput" class="timeInput" placeholder="设置秒数" size="7" maxlength="10" onkeyup="this.value=this.value.replace(/\D/g,'')"/>

1.样式

//CSS
.process-text input{
    position: relative;
    background: transparent;
    height: 100%;
    font: bold;
    outline:none;
    z-index: 10;
}
 
.process-text input:read-only {
    border: 2px solid cadetblue;
}

　　

2.逻辑

//JS
$(".timeInput").on("focus", function(){
	$(this).attr("readonly", "readonly");
});

$(".timeInput").on("blur", function(){
	$(this).css("border", "").removeAttr("readonly"); 
});

$(".timeInput").keydown(function(event){ 
	$this = $(this);
    if(event.which == "13") {
    	if("" === $(this).val())
    	{
    		return;
    	}
		$(".video")[0].currentTime = $(this).val();
		$video.play();
		$(this).val("");
	}
	if(57 >= event.keyCode && 48 <= event.keyCode)
	{
		$this.val($this.val() + (event.keyCode-48).toString());
	}
});