Подскажите пожалуйста, как сделать, чтобы любой пользователь мог самостоятельно ввести данные контракта?
Чтобы в строке 47 кода изменился адрес 0xae4243e2c0f910223323dd2f2fdd16820b69f1d6
на свой любой, допустим на адрес 0x41835eba2075d2452fbedeec25bedbbc61d9b8a1
И при нажатии на кнопку 'Get News' получить новую информацию.
<html>
<head>
<meta charset="utf-8">
<script type="text/javascript" src="https://rinkeby.etherscan.io/assets/plugins/jquery/jquery.min.js"></script>
<script type="text/javascript" src="https://rinkeby.etherscan.io/jss/web3.min.js?v=0.20.6"></script>
</head>
<body>
<table><tr><td>
<center>
<button class="knopka" id='btn_5'><a id="my_link" href="https://rinkeby.etherscan.io/writecontract/index.html?a=0xae4243e2c0f910223323dd2f2fdd16820b69f1d6&n=rinkeby"><b><span style="color:black;">Send News</span></b></a></button>
<button type='button' id='btn_5' class="knopka" onclick="ethcall2('getPost', 'input_5','myanswer_5','string', '|string', 'btn_5');">Get News</button>
<div align="left"><b><span id='myanswer_5' style="color:teal"></span></b></div>
</center></body></td></tr></table>
<script>
$('#overlay', window.parent.document).hide();
jQuery(window).load(function () {
$('#overlay').fadeOut("slow");
var obj = window.parent.document.getElementById('readcontractiframe');
parent.resizeIframe(obj, 0);
});
function getcontractabi(contractaddress) {
$.post("https://Rinkeby.etherscan.io/api",
{
module: "contract",
action: "getabit",
address: contractaddress
},
function (data, status) {
console.log("contractAbi = " + data)
});
}
var Web3 = require('web3');
var web3 = new Web3(new Web3.providers.HttpProvider("https://rinkeby.infura.io"));
var version = web3.version.api;
console.log(version);
var MyContract;
var myContractInstance;
try {
MyContract = web3.eth.contract([{"constant":true,"inputs":[],"name":"getPost","outputs":[{"name":"","type":"string"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"newPost","type":"string"}],"name":"setPost","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"}]);
myContractInstance = MyContract.at("0xae4243e2c0f910223323dd2f2fdd16820b69f1d6");
}
catch (err) {
console.log(err.message);
}
function ethcall2(strMethodName, strInputElementName, strOutputElementName, strOutputtype, strOutputFieldNames, strBtnName) {
var functionNametoCall = "myContractInstance." + strMethodName;
var result;
try {
var strparas;
var elms = document.querySelectorAll("[id=" + strInputElementName + "]");
//console.log("elms.length = " + elms.length);
for (var i = 0; i < elms.length; i++) {
if (i == 0) {
strparas = "'" + add0xforAddress(Escape(elms[i].value)) + "'"
} else {
strparas = strparas + ",'" + Escape(elms[i].value) + "'"
}
if (elms[i].value == '') {
document.getElementById(strInputElementName).focus();
alert('Input value cannot be empty');
return false;
}
}
showLoading(true, strBtnName);
new Function(functionNametoCall + "(" + strparas + ", function(err, res){ if (err) {result = err;} else { result = res; } showMessage('" + strMethodName +"',result,'" + strOutputElementName+"','" + strOutputFieldNames +"','"+ strBtnName +"'); });")();
// result = eval(functionNametoCall + "(" + strparas + ");");
// $('#overlay').show();
}
catch (err) {
//$('#overlay').show();
result = "" + err + "";
showLoading(false, strBtnName);
}
//setTimeout(function () {
// $('#overlay').show();
//}, 2500);
//document.getElementById(strOutputElementName).innerHTML = "<br><br> [ <b>" + strMethodName + "</b> method Response ]<br>" + formatmultipleoutputs(result, strOutputFieldNames) + "<br>";
}
function showMessage(strMethodName, result, strOutputElementName, strOutputFieldNames, strBtnName) {
document.getElementById(strOutputElementName).innerHTML = "<br><br> [ <b>" + strMethodName + "</b> method Response ]<br>" + formatmultipleoutputs(result, strOutputFieldNames) + "<br>";
showLoading(false, strBtnName);
}
function showLoading(isShow, strBtnName) {
if (isShow) {
$(" <img id='waiting_" + strBtnName + "' class='waitingImg' src='https://etherscan.io/images/ajax-loader2.gif' style='margin-left:5px;' alt='Loading' />").insertAfter($('#' + strBtnName));
$('#' + strBtnName).prop('disabled', true);
} else {
$('#' + strBtnName).prop('disabled', false);
$('#waiting_' + strBtnName).remove();
}
}
function Escape(val) {
return val.replace(/'/g, "\\u0027");
}
function formatmultipleoutputs(strVal, strOutputFieldNames) {
var strAnswer = '';
//console.log("strVal = " + strVal);
//console.log("strOutputFieldNames = " + strOutputFieldNames);
//console.log("strVal.length = " + strVal.length);
if (strOutputFieldNames.includes(';') == true) {
var res_2 = strOutputFieldNames.split(';');
for (i = 0; i < strVal.length; i++) {
var tmparray = res_2[i].toString().split('|');
strAnswer = strAnswer + " <font color='green'><i class='fa fa-angle-double-right'></i></font> ";
if (res_2[i] != null && res_2[i].toString() != '') {
strAnswer = strAnswer + " <b>" + tmparray[0] + "</b> <font color='silver'><i>" + tmparray[1] + "</i></font> <b>:</b> "
}
strAnswer = strAnswer + formatresult(strVal[i].toString(), tmparray[1]) + "<br>";
}
} else {
strAnswer = strAnswer + " <font color='green'><i class='fa fa-angle-double-right'></i></font> ";
if (strOutputFieldNames != '') {
var tmparray = strOutputFieldNames.toString().split('|');
strAnswer = strAnswer + " <b>" + tmparray[0] + "</b> <font color='silver'><i>" + tmparray[1] + "</i></font> <b>:</b> ";
strVal = formatresult(strVal.toString(), tmparray[1])
}
strAnswer = strAnswer + replaceAll(strVal, ",", "<br> <font color='green'><i class='fa fa-angle-double-right'></i></font> ") + "<br>";
}
return strAnswer;
}
function htmlEncode(value) {
return $('<div/>').text(value).html();
}
function replaceAll(str, find, replace) {
return str.replace(new RegExp(find, 'g'), replace);
}
function formatresult(strResult, resulttype) {
if (resulttype.startsWith('uint')) {
return toFixed(strResult);
} else if (resulttype == 'string') {
return htmlEncode(strResult);
//return hex_to_ascii(strResult);
} else if (resulttype == 'address') {
if (strResult != '0x0000000000000000000000000000000000000000') {
return "<a href='/address/" + strResult + "' target='_blank'>" + strResult + "</a>";
} else {
return htmlEncode(strResult);
}
//} else if (resulttype == 'bool') {
// return Boolean(remove0x(strResult));
} else {
return htmlEncode(strResult);
}
}
function hex_to_ascii(str1) {
var hex = str1.toString();
var str = '';
for (var n = 0; n < hex.length; n += 2) {
str += String.fromCharCode(parseInt(hex.substr(n, 2), 16));
}
return str;
}
function extractaddress(str1) {
if (str1.length > 40) {
str1.substr(str1.length - 40)
}
return str1;
}
function remove0x(str1) {
if (str1.startsWith("0x") == true) {
str1 = str1.substr(str1.length - str1.length + 2);
}
return str1;
}
function add0xforAddress(straddress) {
straddress = straddress.trim();
if (straddress.startsWith("0x") == false && straddress.length == 40) {
straddress = "0x" + straddress;
}
return straddress;
}
function toFixed(x) {
if (x.indexOf("e+") !== -1) {
var value = web3.toBigNumber(x);
x = value.toString(10);
}
return x;
}
setTimeout(function () {
}, 0);
</script>
</html>
