#javascript #jquery
#javascript #jquery
Вопрос:
У меня здесь очень простой ползунок диапазона: https://jsfiddle.net/dv45kseb /
Я хотел бы иметь возможность динамически отображать 50% значения ползунка в <h3>
, но я не уверен, что начну.
//slider javascript
/*! rangeslider.js - v2.0.2 | (c) 2015 @andreruffert | MIT license | https://github.com/andreruffert/rangeslider.js */
! function(a) {
"use strict";
"function" == typeof define amp;amp; define.amd ? define(["jquery"], a) : a("object" == typeof exports ? require("jquery") : jQuery)
}(function(a) {
"use strict";
function b() {
var a = document.createElement("input");
return a.setAttribute("type", "range"), "text" !== a.type
}
function c(a, b) {
var c = Array.prototype.slice.call(arguments, 2);
return setTimeout(function() {
return a.apply(null, c)
}, b)
}
function d(a, b) {
return b = b || 100,
function() {
if (!a.debouncing) {
var c = Array.prototype.slice.apply(arguments);
a.lastReturnVal = a.apply(window, c), a.debouncing = !0
}
return clearTimeout(a.debounceTimeout), a.debounceTimeout = setTimeout(function() {
a.debouncing = !1
}, b), a.lastReturnVal
}
}
function e(a) {
return a amp;amp; (0 === a.offsetWidth || 0 === a.offsetHeight || a.open === !1)
}
function f(a) {
for (var b = [], c = a.parentNode; e(c);) b.push(c), c = c.parentNode;
return b
}
function g(a, b) {
function c(a) {
"undefined" != typeof a.open amp;amp; (a.open = a.open ? !1 : !0)
}
var d = f(a),
e = d.length,
g = [],
h = a[b];
if (e) {
for (var i = 0; e > i; i ) g[i] = d[i].style.cssText, d[i].style.display = "block", d[i].style.height = "0", d[i].style.overflow = "hidden", d[i].style.visibility = "hidden", c(d[i]);
h = a[b];
for (var j = 0; e > j; j ) d[j].style.cssText = g[j], c(d[j])
}
return h
}
function h(a, b) {
var c = parseFloat(a);
return Number.isNaN(c) ? b : c
}
function i(a) {
return a.charAt(0).toUpperCase() a.substr(1)
}
function j(b, e) {
if (this.$window = a(window), this.$document = a(document), this.$element = a(b), this.options = a.extend({}, n, e), this.polyfill = this.options.polyfill, this.orientation = this.$element[0].getAttribute("data-orientation") || this.options.orientation, this.onInit = this.options.onInit, this.onSlide = this.options.onSlide, this.onSlideEnd = this.options.onSlideEnd, this.DIMENSION = o.orientation[this.orientation].dimension, this.DIRECTION = o.orientation[this.orientation].direction, this.DIRECTION_STYLE = o.orientation[this.orientation].directionStyle, this.COORDINATE = o.orientation[this.orientation].coordinate, this.polyfill amp;amp; m) return !1;
this.identifier = "js-" k "-" l , this.startEvent = this.options.startEvent.join("." this.identifier " ") "." this.identifier, this.moveEvent = this.options.moveEvent.join("." this.identifier " ") "." this.identifier, this.endEvent = this.options.endEvent.join("." this.identifier " ") "." this.identifier, this.toFixed = (this.step "").replace(".", "").length - 1, this.$fill = a('<div class="' this.options.fillClass '" />'), this.$handle = a('<div class="' this.options.handleClass '" />'), this.$range = a('<div class="' this.options.rangeClass " " this.options[this.orientation "Class"] '" id="' this.identifier '" />').insertAfter(this.$element).prepend(this.$fill, this.$handle), this.$element.css({
position: "absolute",
width: "1px",
height: "1px",
overflow: "hidden",
opacity: "0"
}), this.handleDown = a.proxy(this.handleDown, this), this.handleMove = a.proxy(this.handleMove, this), this.handleEnd = a.proxy(this.handleEnd, this), this.init();
var f = this;
this.$window.on("resize." this.identifier, d(function() {
c(function() {
f.update()
}, 300)
}, 20)), this.$document.on(this.startEvent, "#" this.identifier ":not(." this.options.disabledClass ")", this.handleDown), this.$element.on("change." this.identifier, function(a, b) {
if (!b || b.origin !== f.identifier) {
var c = a.target.value,
d = f.getPositionFromValue(c);
f.setPosition(d)
}
})
}
Number.isNaN = Number.isNaN || function(a) {
return "number" == typeof a amp;amp; a !== a
};
var k = "rangeslider",
l = 0,
m = b(),
n = {
polyfill: !0,
orientation: "horizontal",
rangeClass: "rangeslider",
disabledClass: "rangeslider--disabled",
horizontalClass: "rangeslider--horizontal",
verticalClass: "rangeslider--vertical",
fillClass: "rangeslider__fill",
handleClass: "rangeslider__handle",
startEvent: ["mousedown", "touchstart", "pointerdown"],
moveEvent: ["mousemove", "touchmove", "pointermove"],
endEvent: ["mouseup", "touchend", "pointerup"]
},
o = {
orientation: {
horizontal: {
dimension: "width",
direction: "left",
directionStyle: "left",
coordinate: "x"
},
vertical: {
dimension: "height",
direction: "top",
directionStyle: "bottom",
coordinate: "y"
}
}
};
j.prototype.init = function() {
this.update(!0, !1), this.$element[0].value = this.value, this.onInit amp;amp; "function" == typeof this.onInit amp;amp; this.onInit()
}, j.prototype.update = function(a, b) {
a = a || !1, a amp;amp; (this.min = h(this.$element[0].getAttribute("min"), 0), this.max = h(this.$element[0].getAttribute("max"), 100), this.value = h(this.$element[0].value, this.min (this.max - this.min) / 2), this.step = h(this.$element[0].getAttribute("step"), 1)), this.handleDimension = g(this.$handle[0], "offset" i(this.DIMENSION)), this.rangeDimension = g(this.$range[0], "offset" i(this.DIMENSION)), this.maxHandlePos = this.rangeDimension - this.handleDimension, this.grabPos = this.handleDimension / 2, this.position = this.getPositionFromValue(this.value), this.$element[0].disabled ? this.$range.addClass(this.options.disabledClass) : this.$range.removeClass(this.options.disabledClass), this.setPosition(this.position, b)
}, j.prototype.handleDown = function(a) {
if (a.preventDefault(), this.$document.on(this.moveEvent, this.handleMove), this.$document.on(this.endEvent, this.handleEnd), !((" " a.target.className " ").replace(/[nt]/g, " ").indexOf(this.options.handleClass) > -1)) {
var b = this.getRelativePosition(a),
c = this.$range[0].getBoundingClientRect()[this.DIRECTION],
d = this.getPositionFromNode(this.$handle[0]) - c,
e = "vertical" === this.orientation ? this.maxHandlePos - (b - this.grabPos) : b - this.grabPos;
this.setPosition(e), b >= d amp;amp; b < d this.handleDimension amp;amp; (this.grabPos = b - d)
}
}, j.prototype.handleMove = function(a) {
a.preventDefault();
var b = this.getRelativePosition(a),
c = "vertical" === this.orientation ? this.maxHandlePos - (b - this.grabPos) : b - this.grabPos;
this.setPosition(c)
}, j.prototype.handleEnd = function(a) {
a.preventDefault(), this.$document.off(this.moveEvent, this.handleMove), this.$document.off(this.endEvent, this.handleEnd), this.$element.trigger("change", {
origin: this.identifier
}), this.onSlideEnd amp;amp; "function" == typeof this.onSlideEnd amp;amp; this.onSlideEnd(this.position, this.value)
}, j.prototype.cap = function(a, b, c) {
return b > a ? b : a > c ? c : a
}, j.prototype.setPosition = function(a, b) {
var c, d;
void 0 === b amp;amp; (b = !0), c = this.getValueFromPosition(this.cap(a, 0, this.maxHandlePos)), d = this.getPositionFromValue(c), this.$fill[0].style[this.DIMENSION] = d this.grabPos "px", this.$handle[0].style[this.DIRECTION_STYLE] = d "px", this.setValue(c), this.position = d, this.value = c, b amp;amp; this.onSlide amp;amp; "function" == typeof this.onSlide amp;amp; this.onSlide(d, c)
}, j.prototype.getPositionFromNode = function(a) {
for (var b = 0; null !== a;) b = a.offsetLeft, a = a.offsetParent;
return b
}, j.prototype.getRelativePosition = function(a) {
var b = i(this.COORDINATE),
c = this.$range[0].getBoundingClientRect()[this.DIRECTION],
d = 0;
return "undefined" != typeof a["page" b] ? d = a["client" b] : "undefined" != typeof a.originalEvent["client" b] ? d = a.originalEvent["client" b] : a.originalEvent.touches amp;amp; a.originalEvent.touches[0] amp;amp; "undefined" != typeof a.originalEvent.touches[0]["client" b] ? d = a.originalEvent.touches[0]["client" b] : a.currentPoint amp;amp; "undefined" != typeof a.currentPoint[this.COORDINATE] amp;amp; (d = a.currentPoint[this.COORDINATE]), d - c
}, j.prototype.getPositionFromValue = function(a) {
var b, c;
return b = (a - this.min) / (this.max - this.min), c = Number.isNaN(b) ? 0 : b * this.maxHandlePos
}, j.prototype.getValueFromPosition = function(a) {
var b, c;
return b = a / (this.maxHandlePos || 1), c = this.step * Math.round(b * (this.max - this.min) / this.step) this.min, Number(c.toFixed(this.toFixed))
}, j.prototype.setValue = function(a) {
a !== this.value amp;amp; this.$element.val(a).trigger("input", {
origin: this.identifier
})
}, j.prototype.destroy = function() {
this.$document.off("." this.identifier), this.$window.off("." this.identifier), this.$element.off("." this.identifier).removeAttr("style").removeData("plugin_" k), this.$range amp;amp; this.$range.length amp;amp; this.$range[0].parentNode.removeChild(this.$range[0])
}, a.fn[k] = function(b) {
var c = Array.prototype.slice.call(arguments, 1);
return this.each(function() {
var d = a(this),
e = d.data("plugin_" k);
e || d.data("plugin_" k, e = new j(this, b)), "string" == typeof b amp;amp; e[b].apply(e, c)
})
}
});
//custom slider javascript
$(function() {
var output = document.querySelectorAll('output')[0];
$(document).on('input', 'input[type="range"]', function(e) {
output.innerHTML = e.currentTarget.value;
});
$('input[type=range]').rangeslider({
polyfill: false
});
});
//when slider changes, hide start message
$("input").on("change", function() {
$("small").fadeOut("slow");
})
body {
color: #404040;
padding: 50px;
max-width: 500px;
margin: 0 auto;
text-align: center;
font-family: sans-serif;
}
h1 {
font-weight: 300;
}
#helper {
float: left;
margin-top: 20px;
color: #46b7d5;
font-style: italic;
}
output {
display: block;
font-size: 3em;
}
/* original css */
.rangeslider,
.rangeslider__fill {
display: block;
-moz-box-shadow: inset 0px 1px 3px rgba(0, 0, 0, 0.3);
-webkit-box-shadow: inset 0px 1px 3px rgba(0, 0, 0, 0.3);
box-shadow: inset 0px 1px 3px rgba(0, 0, 0, 0.3);
-moz-border-radius: 10px;
-webkit-border-radius: 10px;
border-radius: 10px;
}
.rangeslider {
background: #e6e6e6;
position: relative;
}
.rangeslider--horizontal {
height: 20px;
width: 100%;
}
.rangeslider--vertical {
width: 20px;
min-height: 150px;
max-height: 100%;
}
.rangeslider--disabled {
filter: progid:DXImageTransform.Microsoft.Alpha(Opacity=40);
opacity: 0.4;
}
.rangeslider__fill {
background: -webkit-linear-gradient(left, #abe0ed, #46b7d5);
/* For Safari 5.1 to 6.0 */
background: -o-linear-gradient(right, #abe0ed, #46b7d5);
/* For Opera 11.1 to 12.0 */
background: -moz-linear-gradient(right, #abe0ed, #46b7d5);
/* For Firefox 3.6 to 15 */
background: linear-gradient(to right, #abe0ed, #46b7d5);
/* Standard syntax (must be last) */
position: absolute;
}
.rangeslider--horizontal .rangeslider__fill {
top: 0;
height: 100%;
}
.rangeslider--vertical .rangeslider__fill {
bottom: 0;
width: 100%;
}
.rangeslider__handle {
background: white;
border: 1px solid #ccc;
cursor: pointer;
display: inline-block;
width: 40px;
height: 40px;
position: absolute;
background-image: url("data:image/svg xml;base64,PD94bWwgdmVyc2lvbj0iMS4wIiBlbmNvZGluZz0idXRmLTgiPz4gPHN2ZyB2ZXJzaW9uPSIxLjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyI PGRlZnM PGxpbmVhckdyYWRpZW50IGlkPSJncmFkIiBncmFkaWVudFVuaXRzPSJvYmplY3RCb3VuZGluZ0JveCIgeDE9IjAuNSIgeTE9IjAuMCIgeDI9IjAuNSIgeTI9IjEuMCI PHN0b3Agb2Zmc2V0PSIwJSIgc3RvcC1jb2xvcj0iI2ZmZmZmZiIgc3RvcC1vcGFjaXR5PSIwLjAiLz48c3RvcCBvZmZzZXQ9IjEwMCUiIHN0b3AtY29sb3I9IiMwMDAwMDAiIHN0b3Atb3BhY2l0eT0iMC4xIi8 PC9saW5lYXJHcmFkaWVudD48L2RlZnM PHJlY3QgeD0iMCIgeT0iMCIgd2lkdGg9IjEwMCUiIGhlaWdodD0iMTAwJSIgZmlsbD0idXJsKCNncmFkKSIgLz48L3N2Zz4g");
background-size: 100%;
background-image: -webkit-gradient(linear, 50% 0%, 50% 100%, color-stop(0%, rgba(255, 255, 255, 0)), color-stop(100%, rgba(0, 0, 0, 0.1)));
background-image: -moz-linear-gradient(rgba(255, 255, 255, 0), rgba(0, 0, 0, 0.1));
background-image: -webkit-linear-gradient(rgba(255, 255, 255, 0), rgba(0, 0, 0, 0.1));
background-image: linear-gradient(rgba(255, 255, 255, 0), rgba(0, 0, 0, 0.1));
-moz-box-shadow: 0 0 8px rgba(0, 0, 0, 0.3);
-webkit-box-shadow: 0 0 8px rgba(0, 0, 0, 0.3);
box-shadow: 0 0 8px rgba(0, 0, 0, 0.3);
-moz-border-radius: 50%;
-webkit-border-radius: 50%;
border-radius: 50%;
}
.rangeslider__handle:after {
content: "";
display: block;
width: 18px;
height: 18px;
margin: auto;
position: absolute;
top: 0;
right: 0;
bottom: 0;
left: 0;
background-image: url("data:image/svg xml;base64,PD94bWwgdmVyc2lvbj0iMS4wIiBlbmNvZGluZz0idXRmLTgiPz4gPHN2ZyB2ZXJzaW9uPSIxLjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyI PGRlZnM PGxpbmVhckdyYWRpZW50IGlkPSJncmFkIiBncmFkaWVudFVuaXRzPSJvYmplY3RCb3VuZGluZ0JveCIgeDE9IjAuNSIgeTE9IjAuMCIgeDI9IjAuNSIgeTI9IjEuMCI PHN0b3Agb2Zmc2V0PSIwJSIgc3RvcC1jb2xvcj0iIzAwMDAwMCIgc3RvcC1vcGFjaXR5PSIwLjEzIi8 PHN0b3Agb2Zmc2V0PSIxMDAlIiBzdG9wLWNvbG9yPSIjZmZmZmZmIiBzdG9wLW9wYWNpdHk9IjAuMCIvPjwvbGluZWFyR3JhZGllbnQ PC9kZWZzPjxyZWN0IHg9IjAiIHk9IjAiIHdpZHRoPSIxMDAlIiBoZWlnaHQ9IjEwMCUiIGZpbGw9InVybCgjZ3JhZCkiIC8 PC9zdmc IA==");
background-size: 100%;
background-image: -webkit-gradient(linear, 50% 0%, 50% 100%, color-stop(0%, rgba(0, 0, 0, 0.13)), color-stop(100%, rgba(255, 255, 255, 0)));
background-image: -moz-linear-gradient(rgba(0, 0, 0, 0.13), rgba(255, 255, 255, 0));
background-image: -webkit-linear-gradient(rgba(0, 0, 0, 0.13), rgba(255, 255, 255, 0));
background-image: linear-gradient(rgba(0, 0, 0, 0.13), rgba(255, 255, 255, 0));
-moz-border-radius: 50%;
-webkit-border-radius: 50%;
border-radius: 50%;
}
.rangeslider__handle:active {
background-image: url("data:image/svg xml;base64,PD94bWwgdmVyc2lvbj0iMS4wIiBlbmNvZGluZz0idXRmLTgiPz4gPHN2ZyB2ZXJzaW9uPSIxLjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyI PGRlZnM PGxpbmVhckdyYWRpZW50IGlkPSJncmFkIiBncmFkaWVudFVuaXRzPSJvYmplY3RCb3VuZGluZ0JveCIgeDE9IjAuNSIgeTE9IjAuMCIgeDI9IjAuNSIgeTI9IjEuMCI PHN0b3Agb2Zmc2V0PSIwJSIgc3RvcC1jb2xvcj0iIzAwMDAwMCIgc3RvcC1vcGFjaXR5PSIwLjEiLz48c3RvcCBvZmZzZXQ9IjEwMCUiIHN0b3AtY29sb3I9IiMwMDAwMDAiIHN0b3Atb3BhY2l0eT0iMC4xMiIvPjwvbGluZWFyR3JhZGllbnQ PC9kZWZzPjxyZWN0IHg9IjAiIHk9IjAiIHdpZHRoPSIxMDAlIiBoZWlnaHQ9IjEwMCUiIGZpbGw9InVybCgjZ3JhZCkiIC8 PC9zdmc IA==");
background-size: 100%;
background-image: -webkit-gradient(linear, 50% 0%, 50% 100%, color-stop(0%, rgba(0, 0, 0, 0.1)), color-stop(100%, rgba(0, 0, 0, 0.12)));
background-image: -moz-linear-gradient(rgba(0, 0, 0, 0.1), rgba(0, 0, 0, 0.12));
background-image: -webkit-linear-gradient(rgba(0, 0, 0, 0.1), rgba(0, 0, 0, 0.12));
background-image: linear-gradient(rgba(0, 0, 0, 0.1), rgba(0, 0, 0, 0.12));
}
.rangeslider--horizontal .rangeslider__handle {
top: -10px;
touch-action: pan-y;
-ms-touch-action: pan-y;
}
.rangeslider--vertical .rangeslider__handle {
left: -10px;
touch-action: pan-x;
-ms-touch-action: pan-x;
}
input[type="range"]:focus .rangeslider .rangeslider__handle {
-moz-box-shadow: 0 0 8px rgba(255, 0, 255, 0.9);
-webkit-box-shadow: 0 0 8px rgba(255, 0, 255, 0.9);
box-shadow: 0 0 8px rgba(255, 0, 255, 0.9);
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/2.1.3/jquery.min.js"></script>
<h1>
This form lets you drag the slider.
</h1>
<!--https://andreruffert.github.io/rangeslider.js/-->
<input type="range" value="3825" step="500" min="1000" max="40000">
<small id="helper" class="slideRight">Slide to get started amp;#x2192;</small>
<br>
<br>
<h2 style="display: inline-block; margin-bottom: 50px;"></h2><output style="display: inline-block">3,825</output>
<h3>
<< Display 50% of total value here >>
</h3>
Комментарии:
1. Ну, как вы получаете вывод в
h2
? Сделайте то же самое, но нацелитесь наh3
, но сначала умножьте на 0,5…
Ответ №1:
В этой части кода изменяется значение в заголовке:
$(document).on('input', 'input[type="range"]', function(e) {
output.innerHTML = e.currentTarget.value;
});
Вам просто нужно разделить значение следующим образом:
output.innerHTML = e.currentTarget.value / 2;
Ответ №2:
Чтобы завершить ответ — в любое время, когда вам нужно значение, динамически заполняемое на странице с помощью javascript, вы можете заключить его в тег SPAN и атрибут ID (поскольку идентификаторы уникальны). Итак:
<h3>
<span id="halfvalue"></span>
</h3>
а затем вы добавляете дополнительный код в свой код обработчика событий:
var output = document.querySelectorAll('output')[0];
var halfvalue = document.querySelector('#halfvalue');
$(document).on('input', 'input[type="range"]', function(e) {
output.innerHTML = e.currentTarget.value;
halfvalue.innerHTML = e.currentTarget.value / 2
});