I need to change the contents of a column with javascript, so I do not need to use php with apache. Since I would run with html and javascript.
It would be a file with 10 columns and would only modify the 5th column and that only the cell that had blank.
1|1|1|1| |1|1|1|1|1|
The file would be set by the form and would change the 5th column that was blank with content from a text field of the form.
And do this for the next few lines of the same text.
What you can do in Javascript is a method that changes the content:
var content = '1|1|1|1| |1|1|1|1|1|';
alterContent(content, '123');
function alterContent(content, val) {
var add = [];
content.split('|').forEach(function(v, e){
add[e] = (e == 4 && (v == ' '|| v == '')) ? val : v;
});
return add.join('|');
}
If you need to do this for each line, just pass the method inside a loop and test each line:
var content = "1|1|1|1| |1|1|1|1|1|\n1|1|1|1| |1|1|1|1|1|\n1|1|1|1|1|1|1|1|1|1|";
var linhas = content.split("\n");
/* passa a posição 2, se usar parâmetro: null,
ignora a regra de linha, e testa todas as linhas */
alterarLinhas(linhas, '123', 2);
function alterarLinhas(linhas, val, posicao_linha) {
for (var i=0; i <= linhas.length; i++) {
if (posicao_linha != null) {
if (posicao_linha == i) {
linhas[i] = alterContent(linhas[i], val);
} else {
linhas[i] = val;
}
} else {
linhas[i] = alterContent(linhas[i], val);
}
}
return linhas.join("\n");
}
function alterContent(content, val) {
var add = [];
content.split('|').forEach(function(v, e){
add[e] = (e == 4 && (v == ' '|| v == '')) ? val : v;
});
return add.join('|');
}
1st JSFIDDLE example
2nd JSFIDDLE example
How much to read, change and record: see this .