JS自定义随机数字键盘

<!DOCTYPE html>

<html lang="en">

	<head>

		<meta charset="UTF-8">

		<meta name="viewport" content="width=device-width, initial-scale=1.0">

		<meta http-equiv="X-UA-Compatible" content="ie=edge">

		<title>Document</title>

		<style></style>

	</head>

<body>

<script>

function miniNumberKeyboard (callback) {

	var div = document.createElement('div');

	div.id = 'div'

	document.body.appendChild(div);

	div.style.backgroundColor = '#3d414d';

	div.style.width = '500px';

	div.style.height = '340px';

	div.style.borderRadius = '15px';

	div.style.position = 'relative';

	var inputBox = document.createElement('div');

	inputBox.style.backgroundColor = '#353945';

	document.body.appendChild(inputBox);

	inputBox.id = 'inputBox';

	inputBox.innerHTML = '';

	inputBox.style.position = 'absolute';

	inputBox.style.top = '35px';

	inputBox.style.left = '55px';

	inputBox.style.width = '392px';

	inputBox.style.height = '45px';

	inputBox.style.lineHeight = '45px';

	inputBox.style.fontSize = '20px';

	inputBox.style.color = '#f7fcff';

	inputBox.style.paddingLeft = '8px';

	//删除 确认 取消

	var cancel = document.createElement('div');

	cancel.id = 'cancel';

	cancel.innerHTML = '取消';

	document.body.appendChild(cancel);

	cancel.style.color = '#f7fcff';

	cancel.style.position = 'absolute';

	cancel.style.top = '95px';

	cancel.style.left = '110px';

	cancel.style.backgroundColor = '#454955';

	cancel.style.width = '40px';

	cancel.style.height = '35px';

	cancel.style.lineHeight = '35px';

	cancel.style.textAlign = 'center';

	var del = document.createElement('div');

	del.innerHTML = '删除';

	del.id = 'del';

	document.body.appendChild(del);

	del.style.color = '#f7fcff';

	del.style.position = 'absolute';

	del.style.top = '95px';

	del.style.left = '57px';

	del.style.backgroundColor = '#454955';

	del.style.width = '40px';

	del.style.height = '35px';

	del.style.lineHeight = '35px';

	del.style.textAlign = 'center';

	var trueBtn = document.createElement('div');

	document.body.appendChild(trueBtn);

	trueBtn.id = 'trueBtn';

	trueBtn.innerHTML = '确认';

	trueBtn.style.color = '#f7fcff';

	trueBtn.style.position = 'absolute';

	trueBtn.style.top = '95px';

	trueBtn.style.left = '384px';

	trueBtn.style.width = '70px';

	trueBtn.style.height = '35px';

	trueBtn.style.backgroundColor = '#454955';

	trueBtn.style.lineHeight = '35px';

	trueBtn.style.textAlign = 'center';

	var number = document.createElement('div');

	number.style.width = '425px';

	number.style.height = '190px';

	number.style.position = 'absolute';

	number.style.top = '143px';

	number.style.left = '58px';

	// number.style.backgroundColor = '#fff';

	number.id = 'number';

	document.body.appendChild(number);

	var Box = document.getElementById('number');

	for (var i = 0; i < 10; i++) {

		var numberBox = document.createElement('div');

		numberBox.innerHTML = i;

		numberBox.id = i;

		numberBox.className = 'numberkey color';

		numberBox.style.width = '80px';

		numberBox.style.height = '45px';

		numberBox.style.backgroundColor = '#454955';

		numberBox.style.cssFloat = 'left';

		numberBox.style.marginRight = '25px';

		numberBox.style.marginTop = '15px';

		numberBox.style.lineHeight = '40px';

		numberBox.style.textAlign = 'center';

		numberBox.style.fontSize = '25px';

		numberBox.style.color = '#f7fcff';

		Box.appendChild(numberBox);

		document.getElementById('0').onclick = function cc() {

			if (document.getElementById('inputBox').innerHTML == '0') {

				document.getElementById('0').onclick = null;

				document.getElementById('0').onclick = cc;

			} else if (document.getElementById('inputBox').innerHTML.substr(0,1) == '.') {

				var zeroArray = inputBox.innerHTML.split('');

				var value = zeroArray.shift();

				var newSrt = document.getElementById('0').innerHTML + zeroArray.join('');

				document.getElementById('inputBox').innerHTML = newSrt;

			} else {

				document.getElementById('inputBox').innerHTML = document.getElementById('inputBox').innerHTML + numberBox[0].innerHTML;

			}

		}

	};

	//正负号

	var minus = document.createElement('div');

	minus.className = 'color';

	minus.id = 'minus';

	minus.style.width = '80px';

	minus.style.height = '45px';

	minus.innerHTML = '-/+';

	minus.style.backgroundColor = '#454955';

	minus.style.marginTop = '135px';

	minus.style.marginLeft = '210px';

	minus.style.fontSize = '35px';

	minus.style.lineHeight = '45px';

	minus.style.textAlign = 'center';

	minus.style.color = '#f7fcff';

	minus.style.fontSize = '22px';

	Box.appendChild(minus);

	document.getElementById('minus').onclick = function aa() {

		if ( document.getElementById('inputBox').innerHTML == '0') {

			document.getElementById('minus').onclick = null;

			document.getElementById('minus').onclick = aa;

		} else if (document.getElementById('inputBox').innerHTML.indexOf('-') != -1) {

			document.getElementById('inputBox').innerHTML = document.getElementById('inputBox').innerHTML.split('').join('').replace('-','');

		} else {

			var showArr = document.getElementById('inputBox').innerHTML.split('')

			showArr.unshift('-');

			var newString = showArr.join('');

			document.getElementById('inputBox').innerHTML = newString;

		}

	}

	//小数点

	var point = document.createElement('div');

	point.className = 'color';

	point.id = 'point';

	point.style.width = '80px';

	point.style.height = '45px';

	point.innerHTML = '.';

	point.style.backgroundColor = '#454955';

	point.style.marginTop = '-45px';

	point.style.marginLeft = '315px';

	point.style.fontSize = '35px';

	point.style.lineHeight = '25px';

	point.style.textAlign = 'center';

	point.style.color = '#f7fcff';

	Box.appendChild(point);

	document.getElementById('point').onclick = function bb () {

		if(document.getElementById('inputBox').innerHTML.indexOf('.') != -1) {

			document.getElementById('point').onclick = null;

			document.getElementById('point').onclick = bb;

		} else {

			var newInnerHTML = document.getElementById('inputBox').innerHTML.split('');

			newInnerHTML.push(point.innerHTML)

			var pushNew = newInnerHTML.join('');

			document.getElementById('inputBox').innerHTML = pushNew;

		}

	}

	//input框展示内容

	var numberBox = document.querySelectorAll('.numberkey');

	for (let i = 1; i < numberBox.length; i++) {

		numberBox[i].onclick = function () {

			var inputInHTML = document.getElementById('inputBox').innerHTML;

			var newHTML = inputInHTML + numberBox[i].innerHTML;

			inputBox.innerHTML = newHTML;

			if (newHTML.substr(0,1) == '0' && newHTML.indexOf('.') == -1 || newHTML.substr(0,1) == '.') {

				var array = inputBox.innerHTML.split('');

				var value = array.shift();

				var newSrt = array.join('')

				document.getElementById('inputBox').innerHTML = newSrt;

			}

		}

	}

	//取消按钮的功能

	document.getElementById('cancel').onclick = function () {

	document.body.removeChild(document.getElementById('div'));

	document.body.removeChild(document.getElementById('inputBox'));

	document.body.removeChild(document.getElementById('del'));

	document.body.removeChild(document.getElementById('trueBtn'));

	document.body.removeChild(document.getElementById('number'));

	document.body.removeChild(document.getElementById('cancel'));

}

	//取消按钮的移入移出

	var cancelBtn = document.getElementById('cancel');

	cancelBtn.onmouseover = function over () {

		cancelBtn.style.backgroundColor = '#e75e61';

	}

	cancelBtn.onmouseout = function out() {

		cancelBtn.style.backgroundColor = '#454955';

	}

	//删除按钮

	document.getElementById('del').onclick = function () {

	var length = document.getElementById('inputBox').innerHTML.length;

		inputBox.innerHTML = inputBox.innerHTML.substr(0, length - 1);

	}

	//删除按钮移入移出

	var delBtn = document.getElementById('del');

	delBtn.onmouseover = function over () {

		delBtn.style.backgroundColor = '#e75e61';

	}

	delBtn.onmouseout = function out () {

		delBtn.style.backgroundColor = '#454955';

	}

	//确定按钮

	document.getElementById('trueBtn').onclick = function () {

		callback(document.getElementById('inputBox').innerHTML);

		document.body.removeChild(document.getElementById('div'));

		document.body.removeChild(document.getElementById('inputBox'));

		document.body.removeChild(document.getElementById('del'));

		document.body.removeChild(document.getElementById('trueBtn'));

		document.body.removeChild(document.getElementById('number'));

		document.body.removeChild(document.getElementById('cancel'));

	}

	//确认按钮移入移出

	var trueBtn = document.getElementById('trueBtn');

	trueBtn.onmouseover = function over () {

		trueBtn.style.backgroundColor = '#39bdb5';

	}

	trueBtn.onmouseout = function out () {

		trueBtn.style.backgroundColor = '#454955';

	}

 

	//按钮移入样式

	var mouseColor = document.querySelectorAll('.color');

		for (let i = 0; i < mouseColor.length; i++) {

			mouseColor[i].onmouseover = function () {

				mouseColor[i].style.backgroundColor = '#fec107';

			};

			mouseColor[i].onmouseout = function () {

				mouseColor[i].style.backgroundColor = '#454955';

			}

		}

	};

miniNumberKeyboard(callback);

function callback (LastNumber) {

	console.log(LastNumber);

}

</script>

</body>

</html>

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