Javascript Project to Remove Duplicates From Array of Objects in Browser
obj.<span class="hljs-property">arr</span> = obj.<span class="hljs-property">arr</span>.<span class="hljs-title function_">filter</span>(<span class="hljs-function">(<span class="hljs-params">value, index, self</span>) =></span>
index === self.<span class="hljs-title function_">findIndex</span>(<span class="hljs-function">(<span class="hljs-params">t</span>) =></span> (
t.<span class="hljs-property">place</span> === value.<span class="hljs-property">place</span> && t.<span class="hljs-property">name</span> === value.<span class="hljs-property">name</span>
))
)
<span class="hljs-keyword">const</span> uniqueArray = obj.<span class="hljs-property">arr</span>.<span class="hljs-title function_">filter</span>(<span class="hljs-function">(<span class="hljs-params">value, index</span>) =></span> {
<span class="hljs-keyword">const</span> _value = <span class="hljs-variable constant_">JSON</span>.<span class="hljs-title function_">stringify</span>(value);
<span class="hljs-keyword">return</span> index === obj.<span class="hljs-property">arr</span>.<span class="hljs-title function_">findIndex</span>(<span class="hljs-function"><span class="hljs-params">obj</span> =></span> {
<span class="hljs-keyword">return</span> <span class="hljs-variable constant_">JSON</span>.<span class="hljs-title function_">stringify</span>(obj) === _value;
});
});
<span class="hljs-keyword">const</span> <span class="hljs-title function_">isPropValuesEqual</span> = (<span class="hljs-params">subject, target, propNames</span>) =>
propNames.<span class="hljs-title function_">every</span>(<span class="hljs-function"><span class="hljs-params">propName</span> =></span> subject[propName] === target[propName]);
<span class="hljs-keyword">const</span> <span class="hljs-title function_">getUniqueItemsByProperties</span> = (<span class="hljs-params">items, propNames</span>) =>
items.<span class="hljs-title function_">filter</span>(<span class="hljs-function">(<span class="hljs-params">item, index, array</span>) =></span>
index === array.<span class="hljs-title function_">findIndex</span>(<span class="hljs-function"><span class="hljs-params">foundItem</span> =></span> <span class="hljs-title function_">isPropValuesEqual</span>(foundItem, item, propNames))
);
<span class="hljs-keyword">const</span> <span class="hljs-title function_">getUniqueItemsByProperties</span> = (<span class="hljs-params">items, propNames</span>) => {
<span class="hljs-keyword">const</span> propNamesArray = <span class="hljs-title class_">Array</span>.<span class="hljs-title function_">from</span>(propNames);
<span class="hljs-keyword">return</span> items.<span class="hljs-title function_">filter</span>(<span class="hljs-function">(<span class="hljs-params">item, index, array</span>) =></span>
index === array.<span class="hljs-title function_">findIndex</span>(<span class="hljs-function"><span class="hljs-params">foundItem</span> =></span> <span class="hljs-title function_">isPropValuesEqual</span>(foundItem, item, propNamesArray))
);
};
