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June 15, 2016 18:07
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Minimal case: Calling .select() changes bound data
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| <html> | |
| <body> | |
| <script src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.5.17/d3.js"> | |
| </script> | |
| <script> | |
| // Setup | |
| let body = d3.selectAll('body') | |
| let exampleData = | |
| [ | |
| {_id:"groupOne", items:['one','two']}, | |
| {_id:"groupTwo", items:['three','four']} | |
| ]; | |
| // Add some divs | |
| body.selectAll('div').data(exampleData).enter().append('div'); | |
| // Add some p children of the divs | |
| body.selectAll('div').selectAll('p').data((d)=>d.items).enter().append('p').text((d)=>d); | |
| // Issue | |
| console.log(body.selectAll('div').data()); // data is the same as exampleData | |
| body.selectAll('p').select(function(){return this.parentNode}); // Select parents of all p | |
| console.log(body.selectAll('div').data()); // Data is now ["two","four"] | |
| </script> | |
| </body> | |
| </html> |
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