我正在處理反應,基本上我想用工具提示製作按鈕,現在我正在提供工具提示。我正在更改css顯示屬性,以便在鼠標進入和離開時使其可見或不可見。但有一個錯誤,我不知道該怎麼辦......反應,未捕獲RangeError:超出最大調用堆棧大小
這裏是我的代碼:
import React from 'react';
import ReactDOM from 'react-dom';
import Style from 'style-it';
var Ink = require('react-ink');
import FontIcon from '../FontIcon/FontIcon';
var IconButton = React.createClass({
getInitialState() {
return {
iconStyle: "",
style: "",
cursorPos: {},
};
},
extend(obj, src) {
Object.keys(src).forEach(function(key) { obj[key] = src[key]; });
return obj;
},
Tooltip(props) {
var style = {};
if (this.tooltipDisplay) {
style.display = "block";
} else if (!this.tooltipDisplay) {
style.display = "none";
};
return <div className="tooltip" style={style}>{_props.tooltip}</div>;
},
showTooltip(){
this.tooltipDisplay = true;
},
removeTooltip(){
this.tooltipDisplay = false;
},
render() {
var _props = this.props,
tooltip = this.Tooltip,
opts,
tooltipDisplay = false,
disabled = false,
rippleOpacity,
outterStyleMy = {
border: "none",
outline: "none",
padding: "8px 10px",
"background-color": "red",
"border-radius": 100 + "%",
cursor: "pointer",
},
iconStyleMy = {
"font-size": 12 + "px",
"text-decoration": "none",
"text-align": "center",
display: 'flex',
'justify-content': 'center',
'align-items': 'center',
},
rippleStyle = {
color: "rgba(0,0,0,0.5)",
};
if (_props.disabled || _props.disableTouchRipple) {
rippleStyle.opacity = 0;
};
this.setState({
iconStyle: _props.iconStyle
});
this.setState({
style: _props.style
});
if (_props.disabled) {
disabled = true;
};
if (this.state.labelStyle) {
iconStyleMy = this.state.iconStyle;
};
if (this.state.style) {
outterStyleMy = this.state.style;
};
if (_props.href) {
opts.href = _props.href;
};
var buttonStyle = this.extend(outterStyleMy, iconStyleMy);
return(
<Style>
{`
.IconButton{
position: relative;
}
.IconButton:disabled{
color: ${_props.disabledColor};
}
.btnhref{
text-decoration: none;
}
`}
<a {...opts} className="btnhref" >
<tooltip text={this.props.tooltip} position={this.options} />
<button ref="button" className={"IconButton" + _props.className} disabled={disabled} style={buttonStyle}
onMouseEnter={this.showTooltip} onMouseLeave={this.removeTooltip} >
<Ink background={true} style={rippleStyle} opacity={rippleOpacity} />
<FontIcon className={_props.iconClassName}/>
</button>
</a>
</Style>
);
}
});
ReactDOM.render(
<IconButton href="" className="" iconStyle="" style="" iconClassName="face" disabled="" disableTouchRipple="" tooltip="aaaaa" />,
document.getElementById('app')
);
在控制檯中我得到這個錯誤:
Uncaught RangeError: Maximum call stack size exceeded
at defineRefPropWarningGetter (App.js:1053)
at Object.ReactElement.createElement (App.js:1220)
at Object.createElement (App.js:3329)
at Constructor.render (App.js:43403)
at App.js:15952
at measureLifeCyclePerf (App.js:15233)
at ReactCompositeComponentWrapper._renderValidatedComponentWithoutOwnerOrContext (App.js:15951)
at ReactCompositeComponentWrapper._renderValidatedComponent (App.js:15978)
at ReactCompositeComponentWrapper._updateRenderedComponent (App.js:15902)
at ReactCompositeComponentWrapper._performComponentUpdate (App.js:15880)
我無法找出問題所在。我知道這可能是關於調用一個函數,然後調用另一個函數。但我在代碼中看不到任何這樣的內容,我不確定它是否與它有關。感謝您的幫助:)
永遠,永遠,在任何情況下......我不在乎你可能會想出什麼爲理由......永遠不要叫'從'render'函數內部setState' ;)調用'setState'會導致rerender,這會導致調用'setState',導致rerender,然後調用'setState'並導致rerender,然後再調用'setState',然後您的組件被重新渲染,然後'setState'被再次調用,另一次重新移動...直到你的調用堆棧被最大化出 –
@RyanWheale我希望我能夠upvote那個評論一百萬次:) – Icepickle
謝謝,這是有道理的,我沒有想過那 – Karol