</select>

</div>

<div>

<a onClick="addWidget()" class="btn btn-primary" href="#">Add Widget</a>

</div>

<br>

<div class="grid-stack"></div>

</div>

<script type="text/javascript">

/* match karma testing

{x: 5, y: 3, w: 2},

{x: 0, y: 4, w: 12}

];

n.content = '<button onClick="grid.removeWidget(this.parentNode.parentNode)">X</button><br>' + ++i;

});

let count = 0;

n.content = '<button onClick="grid.removeWidget(this.parentNode.parentNode)">X</button><br>' + count++ + (n.text ? n.text : '');

});

let grid = GridStack.init({

float: true,

disableOneColumnMode: true, // prevent auto column for this manual demo

cellHeight: 100 // fixed as default 'auto' (square) makes it hard to test 1-3 column in actual large windows tests

let text = document.querySelector('#column-text');

let layout = 'list';

});

function addWidget() {

w: Math.round(1 + 3 * Math.random()),

};

grid.addWidget(n);

};

- [API](#api)

- [`addWidget(el?: GridStackWidget | GridStackElement, options?: GridStackWidget)`](#addwidgetel-gridstackwidget--gridstackelement-options-gridstackwidget)

- [`batchUpdate(flag = true)`](#batchupdateflag--true)

- [`cellHeight(val: number, update = true)`](#cellheightval-number-update--true)

- [`cellWidth()`](#cellwidth)

- [`column(column: number, layout: ColumnOptions = 'moveScale')`](#columncolumn-number-layout-columnoptions--movescale)

use before calling a bunch of `addWidget()` to prevent un-necessary relayouts in between (more efficient) and get a single event callback. You will see no changes until `batchUpdate(false)` is called.

else you will need to generate correct CSS (see https://github.com/gridstack/gridstack.js#change-grid-columns)

- `column` - Integer > 0 (default 12)

Note: new list may be partially already filled if we have a partial cache of the layout at that size (items were added later). If complete cache is present this won't get called at all.

this.onChange = opts.onChange;

}

if (!!this.batchMode === flag) return this;

this.batchMode = flag;

if (flag) {

} else {

this._float = this._prevFloat;

delete this._prevFloat;

}

return this;

}

return !this.collide(nn);

}

if (this.nodes.length === 0) return this;

let copyNodes = this.nodes;

this.nodes = []; // pretend we have no nodes to conflict layout to start with...

copyNodes.forEach((n, index, list) => {

}

this.addNode(n, false, after); // 'false' for add event trigger

});

}

/** enable/disable floating widgets (default: `false`) See [example](http://gridstackjs.com/demo/float.html) */

delete node._temporaryRemoved;

delete node._removeDOM;

if (node.autoPosition && this.findEmptyPosition(node, this.nodes, this.column, after)) {

delete node.autoPosition; // found our slot

}

this.nodes.push(node);

if (triggerAddEvent) { this.addedNodes.push(node); }

if (!this.batchMode) { this._packNodes()._notify(); }

return node;

}

if (!this.nodes.length || !column || prevColumn === column) return this;

// simpler shortcuts layouts

const doCompact = layout === 'compact' || layout === 'list';

if (doCompact) {

this.sortNodes(1, prevColumn); // sort with original layout once and only once (new column will affect order otherwise)

}

this.batchUpdate(); // do this EARLY as it will call saveInitial() so we can detect where we started for _dirty and collision

let newNodes: GridStackNode[] = [];

let domOrder = false;

if (column === 1 && nodes?.length) {

domOrder = true;

newNodes = nodes;

nodes = [];

} else {

}

// see if we have cached previous layout IFF we are going up in size (restore) otherwise always

// generate next size down from where we are (looks more natural as you gradually size down).

// ...if not, start with the largest layout (if not already there) as down-scaling is more accurate

// by pretending we came from that larger column by assigning those values as starting point

let lastIndex = this._layouts.length - 1;

let n = nodes.find(n => n._id === cacheNode._id);

if (n) {

// still current, use cache info positions

n.w = cacheNode.w;

}

});

}

}

}

}

delete this._inColumnResize;

return this;

}