我已经将InputField和button创建为单独的组件，并在两个js文件中使用incomeFields和Emifields。然后将两个Js文件作为一个名为HomeLoanEmiCalculator的邮件文件中调用的组件。然后根据提供的输入计算另一个文件成功文件。点击下一个按钮，该值将保存在一个对象中，我们可以在成功文件中检索输入的值以计算EMI值。我引用了以下网站https://www.online.citibank.co.in/products-services/loans/pop-up/home-loan-eligibility-calculator.htm 因为我们必须在ReactJS中创建。下面的代码不能正常工作。即使我使用ref我也无法访问fieldvalues
var React = require('react');
var InputField = React.createClass({
getInitialState: function(){
return{
value: this.props.value || '',
};
},
setValue: function (event) {
this.setState({
value: event.currentTarget.value
});
setDefaultValue = this.props.fieldValues+"."+this.props.stateId;
},
render: function() {
return (<div>
<div>
<input className="inputText" id={this.props.stateId} type="text"
ref={this.props.stateId} onChange={this.props.setValue} defaultValue={this.props.setDefaultValue}/>
</div>);
}
});
module.exports = InputField;
var React = require('react')
var InputField = require('./InputField')
var IncomeFields = React.createClass({
nextStep: function(e) {
e.preventDefault();
var data = {
monthlyIncome : this.refs.monthlyIncome.getDOMNode().value,
rentalIncome : this.refs.rentalIncome.getDOMNode().value,
otherIncome : this.refs.otherIncome.getDOMNode().value
}
this.props.saveValues(data);
this.props.nextStep();
},
render: function() {
return (<div>
<h2>Please enter your income details</h2>
<ul className="inputList">
<li className="width25 hlec">
<InputField name="Gross Monthly Income"
stateId="monthlyIncome"
metrics= "INR"
required="true"
setDefaultValue={this.props.fieldValues.monthlyIncome}
imgPath="images/icons/icon_rupee.png"/>
</li>
<li className="width25 hlec">
<InputField name="Rental Income"
stateId="rentalIncome"
metrics= "INR"
setDefaultValue={this.props.fieldValues.rentalIncome}
imgPath="images/icons/icon_house.png"/>
</li>
<li className="width25 hlec last">
<InputField name="Other Income"
stateId="otherIncome"
metrics= "INR"
setDefaultValue={this.props.fieldValues.otherIncome}
imgPath="images/icons/icon_cashBundle.png"/>
</li>
</ul>
</div>
)
}
})
module.exports = IncomeFields
var React = require('react')
var InputField = require('./InputField')
var EmiFields = React.createClass({
nextStep: function(e) {
e.preventDefault();
var data = {
mortageLoan : this.refs.mortageLoan.getDOMNode().value,
persoanlLoan : this.refs.persoanlLoan.getDOMNode().value,
creditLoan : this.refs.creditLoan.getDOMNode().value,
autoLoan : this.refs.autoLoan.getDOMNode().value,
outstandingCCAmount : this.refs.outstandingCCAmount.getDOMNode().value,
interestRate : this.refs.interestRate.getDOMNode().value
}
this.props.saveValues(data);
this.props.nextStep();
},
render: function() {
return (<div>
<h2>Please enter your income details</h2>
<ul className="inputList">
<li className="width25 hlec">
<InputField name="Any other Mortgage Loan"
stateId="mortageLoan"
metrics= "INR"
imgPath="images/icons/icon_house.png"/>
</li>
<li className="width25 hlec">
<InputField name="Personal Loan"
stateId="personalLoan"
metrics= "INR"
imgPath="images/icons/icon_user.png"/>
</li>
<li className="width25 hlec">
<InputField name="Loan on Credit Card"
stateId="creditLoan"
metrics= "INR"
imgPath="images/icons/icon_card.png"/>
</li>
<li className="width25 hlec last">
<InputField name="Auto Loan"
stateId="autoLoan"
metrics= "INR"
imgPath="images/icons/icon_car.png"/>
</li>
</ul>
<ul className="inputList part2">
<li className="width25 hlec">
<InputField name="Outstanding Amount on Credit Card"
stateId="outstandingCCAmount"
metrics= "INR"
imgPath="images/icons/icon_rupee.png"/>
</li>
<li className="width25 hlec last">
<InputField name="Auto Loan"
stateId="otherLoan"
metrics= "INR"
imgPath="images/icons/icon_rupee.png"/>
</li>
</ul>
</div>
)
}
})
module.exports = EmiFields
var React = require('react');
var EmiCalculations = require('./store/EmiCalculator');
var aboutLoanStyle = {
width: '235px',
marginRight: '10px'
};
var loanAvail = null;
var homeValue = null;
var monthlyEMI = null;
var Success = React.createClass({
render: function() {
return (
<div> {this.calculate}
<div className="section1 outputSection">
<ul className="outputRack">
<li className="c2">
<div className="outputLabel">
<strong>Maximum Home Loan available to you</strong>
</div>
<div className="outputValue last" id="loanAvail" ref="loanAvail" defaultValue={this.props.fieldValues.loanAvail}>{EmiCalculations.getLoanAvail(this.props.fieldValues)}</div>
</li>
<li className="c2 last">
<div className="outputLabel">
<strong>Value of Home you can purchase</strong>
</div>
<div className="outputValue last" id="homevalue" ref="homeValue" defaultValue={this.props.fieldValues.homeValue}>{EmiCalculations.getHomeValue(this.props.fieldValues)}</div>
</li>
</ul>
<ul className="outputRack rack2">
<li className="c2">
<div className="outputLabel">
<strong>Your Monthly EMI</strong>
</div>
<div className="outputValue last" id="monthlyEMI" ref="monthlyEMI" defaultValue={this.props.fieldValues.monthlyEMI}>{EmiCalculations.getMonthlyEMI(this.props.fieldValues)}</div>
</li>
</ul>
</div>
</div>
)
}
})
module.exports = Success
var React = require('react')
var IncomeFields = require('./IncomeFields')
var aboutLoanStyle = {
width: '235px',
marginRight: '10px'
};
var Navigation = React.createClass({
getInitialState: function() {
return {
nextCount: 1
}
},
nextStep: function(e) {
e.preventDefault();
var cnt = ++this.state.nextCount
this.props.nextStep(cnt);
this.setState({nextCount: cnt});
console.log(IncomeFields.props.fieldValues);
},
render: function() {
return (<div className="inputButtonSection">
<div className="right step1">
<button className="blueBtn" style={aboutLoanStyle}>KNOW MORE ABOUT HOME LOANS</button>
{this.props.nextBtnVisibility ? <button key={this.state.showEmiField} className="blueBtn nextBtn" style={this.props.btnStyle} onClick={this.nextStep}>{this.props.nextStepLabel}</button> : null}
{this.props.resetBtnVisibility ? <button className="greyBtn reset first" onClick={this.resetValues}>RESET</button> : null }
</div>
</div>
)
}
})
module.exports = Navigation
var React = require('react')
var IncomeFields = require('./IncomeFields')
var EmiFields = require('./EmiFields')
var Success = require('./Success')
var assign = require('object-assign')
var Navigation = require('./Navigation')
var fieldValues = {
principalAmount : 100000,
monthlyIncome: null,
rentalIncome : null,
otherIncome : null,
mortageLoan : null,
persoanlLoan : null,
creditLoan : null,
autoLoan : null,
outstandingCCAmount : null,
otherLoan : null,
downPayment : null,
loanTenure : null,
loanAvail: null,
homeValue: null,
monthlyEMI: null
};
var HomeLoanEMICalculator = React.createClass({
getInitialState: function() {
return {
nextStepCount: 1,
nextStepLabel: "NEXT",
showEmiField: false,
showTenureFields: false,
showOutput: false,
nextBtnVisibility: true,
resetBtnVisibility: false,
btnStyle : {
marginRight: '10px'
}
}
},
saveValues: function(field_value) {
return function() {
fieldValues = assign({}, fieldValues, field_value)
}.bind(this)()
},
nextStep: function(count) {
//this.setState({nextStepCount: count});
this.showNext(count, true);
},
showNext: function(c, bool) {
if(c===2) {
this.setState({resetBtnVisibility : bool});
this.setState({showEmiField: bool});
} else if(c===3) {
this.setState({showTenureFields: bool});
this.setState({nextStepLabel: "CALCULATE"});
btnStyles = {
width: '110px',
marginRight: '10px'
}
this.setState({btnStyle: btnStyles});
} else if(c===4) {
this.setState({showOutput: bool});
this.setState({nextBtnVisibility: false});
}
},
render: function() {
return (
<div className="calculatorWrapper">
<IncomeFields fieldValues={fieldValues}
nextStep={Navigation.nextStep}
saveValues={this.saveValues}/>
{this.state.showEmiField ? <EmiFields fieldValues={fieldValues}
nextStep={Navigation.nextStep}
saveValues={this.saveValues}/>: null}
{this.state.showOutput ? <Success fieldValues={fieldValues}/> : null}
<Navigation nextBtnVisibility={this.state.nextBtnVisibility} resetBtnVisibility={this.state.resetBtnVisibility} btnStyle={this.state.btnStyle} nextStepLabel={this.state.nextStepLabel} nextStep={this.nextStep}/>
</div>
)
}
})
module.exports = HomeLoanEMICalculator
var React = require('react')
var ReactDOM = require('react-dom')
var HomeLoanEMICalculator = require('./components/HomeLoanEMICalculator')
window.onload = function() {
ReactDOM.render(
<HomeLoanEMICalculator />,
document.getElementById('emi-calc-form')
)
}
请帮我这样做。请提前感谢
答案 0 :(得分：0)
您尝试做的事情有一些问题：
如果您阅读refs上的文档： https://facebook.github.io/react/docs/more-about-refs.html#the-ref-string-attribute
您将看到需要为要获取DOM值的组件分配ref属性。
this.refs.monthlyIncome.getDOMNode().value
仅在您执行以下操作时才有效：
<input className="inputText" type="text" ref="monthlyIncome" />
解决这个问题的一种方法是让字段成为状态中的属性，并根据是否设置了这些状态，触发表单进入其下一个状态。你可能
代码可能类似于下面的内容。您仍然需要实现函数，以便onChange将更新状态。如果输入字段通过props获取值，则可以使用InputField轻松替换输入，并且onChange函数会重新启动以更改状态。
var InputField = React.createClass({
getInitialState: function(){
return {mortgageLoan: null, principalAmount: null};
},
renderFirstForm: function() {
return (
<div>Mortgage Loan: <input className="inputText" value={this.state.mortgageLoan} /></div>
)
},
firstFormComplete: function() {
return (this.state.mortgageLoan != null);
}
renderSecondForm: function() {
return (
<div>Principal Amount: <input className="inputText" value={this.state.principalAmount} onChange={} /></div>
)
}
})