[英]cant set style attribute value javascript / typescript
我正在尝试为提供的 object 中的元素设置样式。 像这样:
function DOMparseChildren(children: any) {
return children.map((child: any) => {
if(typeof child === 'string') {
return document.createTextNode(child);
}
return child;
})
}
function nonNull(val: any, fallback: any) { return Boolean(val) ? val : fallback };
function DOMparseNode(element: any, properties: any, children: any) {
const el = document.createElement(element) as HTMLElement;
// here it is possible to set style...
// el["style"]["color"] = "red";
Object.keys(nonNull(properties, {})).forEach(key => {
if(key === 'style') {
Object.keys(nonNull(properties[key], {})).forEach(styleKey => {
console.log(element + "." + key + "." + styleKey + " = " + properties[key][styleKey]);
// here it is not possible.......
el[key][styleKey] = properties[key][styleKey];
el["style"]["color"] = "red";
});
}
el[key] = properties[key];
})
DOMparseChildren(children).forEach((child: any) => {
el.appendChild(child);
});
return el;
}
function DOMcreateElement(element: any, properties: any, ...children: any) {
if(typeof element === 'function') {
return element( { ...nonNull( properties, {} ), children } );
}
return DOMparseNode(element, properties, children);
}
使用,它应该有助于以下场景:
document.body.appendChild(<div style={{color: 'red'}}></div>)
console.log
确实记录了正确的 output: h1.style.color = red
那么为什么它不在console.log
正下方应用我的风格呢?
我没有收到任何错误..这使得调试变得更加困难:(
如果需要更多上下文,请告诉我!
最终目标是取代el["style"]["color"] = "red";
和el[key][styleKey] = properties[key][styleKey];
线
el[key] = properties[key];
正在覆盖在properties[key]
循环中设置的所有 styles。 你应该把它放在一个else
块中,所以它只适用于non-style
属性。
function DOMparseNode(element: any, properties: any, children: any) {
const el = document.createElement(element) as HTMLElement;
// here it is possible to set style...
// el["style"]["color"] = "red";
Object.keys(nonNull(properties, {})).forEach(key => {
if(key === 'style') {
Object.keys(nonNull(properties[key], {})).forEach(styleKey => {
console.log(element + "." + key + "." + styleKey + " = " + properties[key][styleKey]);
// here it is not possible.......
el[key][styleKey] = properties[key][styleKey];
el["style"]["color"] = "red";
});
} else {
el[key] = properties[key];
}
})
DOMparseChildren(children).forEach((child: any) => {
el.appendChild(child);
});
return el;
}
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