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Watch the steps in this short video, and the written instructions are below the video Instead of referring to a list of items on the worksheet, you can type the list in the Source box, separated by commas.For example: Yes, No, Maybe Notes: To allow users to also type items that are not in the list, remove the check mark to turn off the Error Alert.JSON.parse() is available natively in most recent browsers.If you need to support older browser, make use of an external Java Script library such as Douglas Crockford's json2 You can use Excel's Go To Special feature to quickly select all cells with data validation. Result: Note: to remove data validation from a cell, select the cell, on the Data tab, in the Data Tools group, click Data Validation, and then click Clear All.Create a drop down list of items in a cell, with Excel's Data Validation feature.This will make data entry easier, and reduce input errors and typing mistakes.
Validation rules can change cells font, style, size or border. For example, rules may highlight negative figures by printing them in red."), Pf(c),c=c.inner HTML);var d=document.create Element("template");if("content"in d)d.inner HTML=c,d=d.content;elsec=document.create Tree Walker(d, Node Filter. new Weak Map:new Tf;e=Node();)d.clear&&d.clear();b=a}else b=ae("SPAN");0/gi;function vg(a) var wg=new vg();vg.prototype.hb=function(a);function xg(a,b,c,d,e,f) xg.prototype. Sa=function(a);p.activate=function(a);p.deactivate=function();function ii(a,b)};function lj() x(lj, N);lj.prototype. Sa=function(a);lj.prototype.activate=function(a);function kj(a) ;function mj() x(mj, N);mj.prototype. Input messages appear when the user selects the cell and tell the user what to enter.
If users ignore the input message and enter a number that is not valid, you can show them an error alert. Check 'Show error alert after invalid data is entered'.
The JSON string needs to be wrapped by parenthesis, else it will not work!