browser - How to fill JavaScript localStorage to its max capacity quickly? -


i have application uses localstorage frequently. reach localstorage max capacity , catch exception , clean old data.

try {    localstorage.setitem(mykey, mydata); }catch(error){    // empty old data in localstorage , re-insert mykey , mydata }

everything fine except cannot test easily. looking way fill localstorage max capacity can test code in different conditions , browsers.

most browser have 5mb - 10mb localstorage, example, chrome has 5mb. use loop test limits of localstorage, , catch once exceeding limit.

then output result.

try one:

https://jsfiddle.net/dalinhuang/6aeb3fcr/

if (localstorage && !localstorage.getitem('size')) {     var = 0;     try {         // test 10 mb         (i = 250; <= 10000; += 250) {             localstorage.setitem('test', new array((i * 1024) + 1).join('a'));         }     } catch (e) {         localstorage.removeitem('test');         localstorage.setitem('size', - 250);                 } }  console.log('max localstorage size: ' + localstorage.getitem('size') + 'kb');

ref: enter image description here


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